Page 1 So I know it's got spark and good pressure on the rail. So that shouldn't be the problem. You may have to register before you can post: click the register link above to proceed. All that is really irrelvant. Have checked resistance/voltage on injector end of looms and all is normal as well when the car will not start. If the pulse width is too wide, the coil will over-saturate and not build the strong magnetic field needed to produce a nice spark. How to test fuel pressure, injector pulse and spark with basic tools - Honda by ScannerDanner. Dodge Dakota No Start, No Fuel Pressure Testing by ScannerDanner. I have spark, I have fuel pressure, I have compression, I have power to the injectors. ) It also has no injector pulse at the injectors. Hello to all I need help! I have 2005 nissan maxima SE 3. Nov 28, 2013. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) by ScannerDanner. No ground = no fuel injection. If the G signal is not present while cranking the engine, the ECU will not be able to identify when to produce the injection signal. My friend has my hp tuners, so I won't be able to scan it until tomorrow. It's what fires the injectors and coils. I tested the ignition coil and found that it was bad and replaced it. Hi, my cousin has a 2002 ford focus, 2. Mar 12, 2010. I can't ever get spark or injector pulse. 3 Vortec, no injector signal. I did read on another forum that a noid light won't illuminate with a resistor box wired in but I'm not sure I trust that logic. No Start, No Spark, No Injector Pulse (faulty crank sensor). Using a Fuel Injector Pulse Tester is the safest way to see if the entire assembly is bad on the CPI ‘Spider’ system (this is because this assembly only has one fuel injector solenoid inside). Using a Fuel Injector Pulse Tester is the safest way to see if the entire assembly is bad on the CPI 'Spider' system (this is because this assembly only has one fuel injector solenoid inside). Tools used - Thexton Spark. Observe the spray pat-tern while an assistant cranks the engine briefly. 0l gen 4, with the engine not running the map sensor reads 102kpa, during cranking you can see is decreasing as the engine starts to pull a vacuum. please I need help. All fueses are good and there is power everywhere, but no injector pulse. With the intake plenum off, the weak cylinder’s plastic line can now be pulled out of the intake and the poppet valve placed in a container. I have checked all the firewall fuseable links. it has power to injectors but no ground pulse. right when you turn the key on the injectors go straight to 12. Next i checked for spark using a spark tester then spray carb cleaner in the Tb and it starts up long enough to burn off the cleaner. 3L no spark-no injector pulse. Save Share. check ecu power and ground ok check theft system is off. 3, motor has a miss so I checked and cleaned all injectors, changed the coil packs and now still have a miss in the number 2 cylinder. 91's/posi spring kit, harrop cover, 1 3/4 Kooks long tubes/catted mids, Corsa sport, Billet shifter, 5000K HID's lows/Fogs. If you have no spark then look at ignition coil connection and trace through to the distributor( if equipped ). But you already knew that. i know the older gm's like this the module controlled spark and fuel. Mar 12, 2010. My 1992 940 gl(non turbo) died and would not stsrt. Now it has no injector pulse, the coil is good, and the stim board is showing nothing on the little led light on the stim board. NO INJECTOR PULSE!!!! what now?? 08-30-2013 09:43 AM #6 Yes the ground is on the side where I tested it at so I confirmed that I'm getting ground from the ECM when ignition is off but when I turn it on the ground goes away and the light goes off untill I start to crank it then that injector will pulse!. 6 model 2002 ,car not start it have spark coil and if spray on intake start cut off after fuel finish but no injector pulse it have 12v supply on injector no signal from ecu ,we test ecu on other on car starting fine and test crank sensor ,cam sensor all ok. 3, motor has a miss so I checked and cleaned all injectors, changed the coil packs and now still have a miss in the number 2 cylinder. 2010 Chrysler PT CRUISER (VIN - 3A4GY5F94AT******) Part Numbers: Customer Report: Diagnostic Report: This vehicle has been tested several times and found to be faulty due to mecha. Injector pulse 2. I have limited data on Mercedes as I am using Mitchell Which has been of very little help. please I need help. Hello to all I need help! I have 2005 nissan maxima SE 3. I have checked all the firewall fuseable links. i am getting spark to the plugs but I am not getting and pulse reading to the injectors. The blank key worked well to start, and even unlocked. I believe the Ecu is not getting the signal to ground each injector. No spark and no injector pulse. When I turn the key and hit the starter I should be reading a pulseright? Fuel pump primes, have spark and compression. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. The Fix After verifying that there is consistent spark from the coil, disconnect the injector connector and check for power on the red wire during cranking. i have spark, it will run on brake kleen. I appear to be getting no spark or fuel. still have spark. It uses 12V vehicle battery for power. I pulled a spark plug and confirmed there's no spark. I get 10 volts to each injector in key position 1 , the voltage drops to 8 or 9 volts on crank. Not sure where to look from here. 5 across the board. Swapped out computer with known good one, still no pulse from injectors. The EEC does 4 point interpolation on all tables. I did read on another forum that a noid light won't illuminate with a resistor box wired in but I'm not sure I trust that logic. No spark to distibutor. Did you check the spark on this engine? If there is no spark as well, the pick-up coil in the distributor is the most likely problem. No Pulse to Injectors, Has Spark I ended up replacing the EZK module in my '88 Turbo, and I finally have spark and the fuel pump engages when it's supposed to. ^Just a thought!. You may have to remove the spark plugs to let them. All that is really irrelvant. When I push switch, injectors spray like crazy. please I need help. I used the following for my three wire hookup to the engine harness from the AAW accessories connector: dark blue fuel to gray fuel power feed on harness, orange BAT1 to orange constant power, and pink IGN1 to pink ignition on harness( this also says. I was really puzzled and started thinking the ECM was messed up. Tach in +12V via two wires, one ignition power, one main. getting spark, getting fuel to the fuel rail, have reset my ecu. SOURCE: What does it mean when u have no pulse in the injectors and spark plugs in a 2002 Chrysler 300M. The PCM is from a 98 Buick Regal GS. 3 lhas no injector pulse [ 1 Answers ] 1999 Honda accord 2. Knowing the sequence will help you troubleshoot no start conditions. Seems like right sign is going into the ECM but the ECM is not telling the distributer to spark or for the fuel injectors to pulse? Any ideas that. I have replaced the cam sensor, crank sensor, and coil. Dodge Dakota No Start, No Fuel Pressure Testing by ScannerDanner. Page 1 of 2 1 2 Next >. All that is really irrelvant. The EDIS module processes this into a 512us pulse on the IDM line during operation. 7L 2WD back in January. 7 has spark, has injector pulse, compression 150 psi, fuel pressure is 45psi, timing cover pulled checked timing marks crank and cams are good, cranks normal speed, pulled injector inspect …. 1; 2; Next. 1988 f250 460 cranks no start. $88 - $111. 2003 FX 140 No. This is where I would start. Have replaced ICM(grey box on side of distributor0, no fusible link problems, key sends power to "coil"(black transformer looking item bolted to top of engine on drivers side from which wire goes to centre post of distributor). I appear to be getting no spark or fuel. fix the metal part so it works. It occasionally will fire one cylinder only, but often just cranks. i purchased the car and had heads rebuilt installed with new gaskets and all surfaces machined. Disconnecting one fuel injector plug reduces the injector driver current sufficiently to get the injector drivers to fire. More Electrical HELP! No injector pulse, no spark from coil. Here are some of what we have done and checked:-Added additional grounds, even from G101 direct to the head and chassis. They we're able to manually get spark and injector pulse by pulsing them with equipment they have. if you have voltage and the ignition module is good, check for an open or shorted pickup coil. Nov 24, 2012. It has new computer, new module. 2l standard trans. Here is the back story. Disconnect on fuel injector connector and attempt to crank the engine. I have gotten so sick of this pickup, I just went and bought a ’93 Mazda B2200 that has a carburetor and it runs perfect. If the coil pulse width is too wide, it will overheat and not pulse properly, with barely a spark present. 7L 2WD back in January. If the control module. A faulty sensor, computer, ignition module, etc. I checked the ground from injector to computer and it ohm'd good. This is where I would start. No spark to distibutor. Very rare to have computers go out. This would be a pickup inside the distributor and or ignition module. -Fuel pump (Primes)-Fuel in fuel rail's-Manually pulsing the injectors-Harness is connected. I have checked the relay by the fan shroud all conections look good, by passed the fuel relay and the fuel pressure is good. Figures 3 and 4 are how the injector pulses look like with a scope at closed throttle and wide open throttle. please I need help. I first replaced the distributor because they were known to go bad, I checked and I thought it was bad but I was wrong. I'll edit this thread as solved. The shop found the ignition key body was broken and NATS (Nissan Anti-Theft System) immobilizer codes P1610 and P1614. My friend and I took the injectors on my 98 wrx swap out to test and clean them, re-instralled them and now it won't start. Checked codes and got crank cam and O2 sensor. How to Check For Injector Pulse P0206 - Duration: 2:26. I picked it up from a salvage yard in Wisconsin. I have spark, but now we have finally discovered I am not getting any fuel into the cylinders. It's not a signal issue as you have proven you have both spark an fuel. When cracking engine, (testing with noid lights on spark and injector) systems get normal pulses, engine tries to start, then pulses stop. Since the main injector is con-cealed by the intake, a noid light cannot be used for no. So I went in and tested the pins directly at the ecu by probing The injector output pins 51,52,60, and 61. The car makes it possible, but the driver makes it happen. Yeah this thing will crank all day but no spark/inj pulse. Control Algorithm (FuelAlpha) lets you choose between Speed Density and Alpha-N. WTH! then checked to see if injectors are working. no codes in computer , replaced crank sensor , replaced fuel filter, replaced fuel pump,. Seems like right sign is going into the ECM but the ECM is not telling the distributer to spark or for the fuel injectors to pulse? Any ideas that. Since that post I have wired in a different harness and checked all powers and grounds and I see no problem. i have spark, it will run on brake kleen. I trust you used a noid light or led test light to check for injector pulse. 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2. This morning, using module #1, I cranked the engine while someone wiggled the ign module connectornothing happened. Any suggestions for further testing? Thanks CRAIG. Although on the CSFI ‘Spider’ type, you've got 6 or 8 separate fuel injectors, you are still able to test each one with the Fuel Injector Pulse. I still don't have injector pulse and I'm really leaning towards the injector harness itself. Visitor in New Albany, IN on. It decided to die in a parking lot after being shut off. Sign in to reply. ordered ecm programmed to my vin # installed and performed passlock reprogram. finding out there is good spark and fuel pressure. 2010 Chrysler PT CRUISER (VIN - 3A4GY5F94AT******) Part Numbers: Customer Report: Diagnostic Report: This vehicle has been tested several times and found to be faulty due to mecha. it says 1801 or something undefined codes getting a signal from cmp and ckp sensors but still no spark no fuel or injector pulse,please help. Checked codes and got crank cam and O2 sensor. _____ 2006 Chevy Monte Carlo SS. This is in my 69 Camaro with AAW Classic Update harness. This will also throw a code, so check those. No spark to distibutor. The injectors show to have power but no fire. How to test fuel pressure, injector pulse and spark with basic tools - Honda by ScannerDanner. It features power and output lights that indicate test activation. Sorry Martin, a typo - see my last paragraph about if the air+NOS+spark could ignite, or about the oxygen rich mixture being blown onto a glowing turbo. More Electrical HELP! No injector pulse, no spark from coil. Has signal in to ECU from ignition control module, have tested it and also been proven to be correct as there is spark. 6 model 2002 ,car not start it have spark coil and if spray on intake start cut off after fuel finish but no injector pulse it have 12v supply on injector no signal from ecu ,we test ecu on other on car starting fine and test crank sensor ,cam sensor all ok. 2001 saab 9-5 starts then stalls, no injector pulse. Fuel injectors are usually powered directly by a fuse and then grounded by the engine computer. I currently have a crank, but no start situation. 0L Turbo) 2: 10-31-2010 03:13 PM: EJ20G Motor no fuel no injector pulse. Rewq246 · Registered. No flashes from the injector circuit when cranking the engine would tell you the PCM is not pulsing the injectors. no spark or injector pulse. 2000 chevy 3500 7. The power wires will be the same color on each injector. Should be 12v. No spark won't start (1993 Dodge Dakota) drove truck parked it went out to leave again would not start replaced coil. 0L Turbo) 2: 10-31-2010 03:13 PM: EJ20G Motor no fuel no injector pulse. i have replaced coilpack, crank sensor, and a few more things. No start, spark but no injector pulse. There are two so I believe they both supply a pulse to the ECU which then figures out timing and then pulses the injectors appropriately. You may have to register before you can post: click the register link above to proceed. My snap-on scanner and my tech 1 scanner show - Answered by a verified Toyota Mechanic. Module is in good. Ok so here's the deal. You need to get to basic troubleshooting and supply more info than you hav. Although on the CSFI 'Spider' type, you've got 6 or 8 separate fuel injectors, you are still able to test each one with the Fuel Injector Pulse. the old truck has been parked for many years and i. could lead you closer to the problem. The ECU cannot pulse the injector without an Ne signal and will not start or run if this signal is not present. Seems to run OK if it starts. It has new computer, new module. Mar 12, 2010. I've even pulled fuel rail and hooked up a momentary switch to injectors going to ground. 2010 Chrysler PT CRUISER (VIN - 3A4GY5F94AT******) Part Numbers: Customer Report: Diagnostic Report: This vehicle has been tested several times and found to be faulty due to mecha. I am working on a 94 mastercraft with a throttle body injected 350. Re: Vt V6 no injector pulse has spark by delcowizzid » Mon Jul 22, 2019 7:35 am Now days they can last 5 minutes and it's a pain in the area when you are trying to diagnose a no start issue and it's a brand new part failure. can pour fuel in trottlebody and will run til fuel is gone. I have a jdm 2jz gte I'm my 88 supra single turbo 76mm. ?A while back, the car. Dodge Dakota No Start, No Fuel Pressure Testing by ScannerDanner. The shop found the ignition key body was broken and NATS (Nissan Anti-Theft System) immobilizer codes P1610 and P1614. Once the faults were confirmed I connected my scan tool. 1997 Lincoln Continental 4. I get spark at plugs but no pulse to the injector therefore no fuel and no start. Solution/Cause – Faulty idler pulley spring breaks, which throws out the timing. No Start, No Spark, No Injector Pulse (faulty crank sensor). no spark & no fuel = no start: Annoying Eric: Normally Aspirated Powertrain: 10: 11-29-2017 07:39 PM: 02 WRX, no spark, no injector pulse. The first time I ran into one of these, I mistakenly replaced the engine computer in an attempt to fix the no injector pulse condition. 6 model 2002 ,car not start it have spark coil and if spray on intake start cut off after fuel finish but no injector pulse it have 12v supply on injector no signal from ecu ,we test ecu on other on car starting fine and test crank sensor ,cam sensor all ok. I have an extra CAS just in case I have a failure. ScannerDanner 145,434 views. PLEASE HELP!!90 geo tracker no start, no injector pulse I have a 1990 geo tracker with the 1. No spark won't start (1993 Dodge Dakota) drove truck parked it went out to leave again would not start replaced coil. ive tried 2 different ecu's and both of them have no issues communication with the car, vcds, and nefmoto. Continue with Facebook. What could it be? Should I have the ECU checked? Or is there some kind of fuse or emergency shutoff I dont know about?. I changed the pip (pick up coil) had the ignition control module checked @2 different places and both said it was good. Have helper crank the engine to see if the nylon fuel line sprays fuel. I can't ever get spark or injector pulse. 91's/posi spring kit, harrop cover, 1 3/4 Kooks long tubes/catted mids, Corsa sport, Billet shifter, 5000K HID's lows/Fogs. If there is no spark, or weak spark, verify the following: • 12 Volt switched ignition power to the coil. ^Think what happens when you blow on something glowing red hot - more oxygen = more heat. If i am not mistaken, the injectors have a fused hot wire on them all of the time, the computer determines the pulse by grounding them or completeing the circuit. Fuel pump runs, good pressure up to. checked fuel pressure had 60psi, checked fuel flow appears to be good. I checked all fuse box fuses. "take a test light. L-98 Engine Start Sequence. put a noid light on them and they have juice. During cranking, we are getting spark at the spark plugs, but NO fuel injector pulses. I went through the wire job on the new module and found out he had the crank signal and ground wires backwards. usdm 550's injectors, I have spark on my spark plugs, the injectors have power but when I check the ground pulse to the injectors no pulse from out the ecu pins nothing I check it at the ecu pins to make sure it wasn't the harness can the. If there is power at the injectors but no ground pulse, check the wiring continuity to pin 12 of the L-Jetronic control module. There are a number of other things that could cause lack of injector pulse. 5L the Engine crank over OK, but there is no injector pulse and no spark. Do you Know how to measure injector pulses correctly??? then your ECM is not telling the injectors to fire for whatever reason1986 BMW 325e no start. No injector pulse or spark?? Discussion in '94-95 5. I have replaced the cam sensor, crank sensor, and coil. 5L the Engine crank over OK, but there is no injector pulse and no spark. Swapped no fix. No spark to distibutor. It is strange that one shorted fuel injector can cause all the other injectors to not fire, but this is exactly what can happen with a group fired system. In other words, if there's no spark, there's no fuel injection. I checked all fuse box fuses. what am i overlooking. I believe the Ecu is not getting the signal to ground each injector. tested coil and it was ok, tested ign module under cap, tested fine, tested pickup coil and that also was fine. Have spark, but no injector pulse with noid light. Jan 30, 2010 #6 Aceshigh Veteran Member Lifetime Gold Member. Wires from injectors to ecm are good. Load test the battery to see if there is a dead cell or an open under load. The issue we have now is there is never any injector pulse, no matter what we do. im afraid its the computer since the computer grounds the injectors to pulse them, but im hoping thats not it. Could it be crank angle sensor or ecu? Thanks, Tyler. Lumina :: 92 Chevy Euro Has Spark But No Injector Pulse Was called today to look at a car that wont start its a 92 Chevy lumina euro with the 3. If the pick-up coil is the problem, you might be better off replacing the distributor. I'm just looking for confirmation, or if there's anything I missed. In a few seconds, the injectors would fill the throttle body!! Besides the either "Wide open throttle" or zero injector pulse, I also have no spark at coil, so no spark to distributor or plugs. If the injectors appear to be working, but the engine will not start, the engine may be flooded. Joined Apr. There was no fuel injector pulse. Re: 2002 f150 no spark or injector pulse Post by tater69 » Sun Oct 04, 2015 4:36 pm so from what i have been looking at that is the cruise control cut off switch would that going bad cause the truck not to start. The crank sensor can cause no spark and no pulse to the injectors, however, it would be the ground side of the injector harness that was missing. How to test fuel pressure, injector pulse and spark with basic tools - Honda by ScannerDanner. No Injector pulse Sign in to follow this. 8L that I replaced a ckp sensor and still a no start. please I need help. Author: Subject: No spark or injector pulse: samuel. There arne't too many things that will allow the ecu to spark and run the pump on but NOT pulse the injectors. ScannerDanner 145,434 views. Key ON, engine OFF, fuel pump running: fuel pressure must be 60psi to 66psi and must remain above 55psi for 3 to 5 minutes after the fuel pump shuts off. 5-12 volts. During cranking, we are getting spark at the spark plugs, but NO fuel injector pulses. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) by ScannerDanner. i hooked up a voltage meter to the coils and the injectors. I found out I had intermitten injector pulse, about 1 time out of four. TFI Module is the ignition control module. Join the discussion. All that is really irrelvant. 2006 CGM M6 18 CV8Z's, Aux input by bohnman, Red leather interior, Pedders all around, Bridgestone RE-01r's, 3. So engine has spark, injector pulse is there but something is still not right. I really appreciate the thought and insight you have given to this problem. I'm hoping it's crank sensor related but wasn't sure what the vats would do if that was somehow triggered. No Start, No Spark, No Injector Pulse (faulty crank sensor). Grounds for all sensors. This information may not apply to all makes and models. When you start an L-98 engine Corvette, a series of events take place that causes the engine to run. also whats your Voltage while cranking over? ive seen the Haltechs have that issue when voltage is low. 1988 f250 460 cranks no start. I went through the wire job on the new module and found out he had the crank signal and ground wires backwards. I changed the pip (pick up coil) had the ignition control module checked @2 different places and both said it was good. Spark But No Injection pulse. No 12 second fuel pump run. 144ms to indicate proper operation. It started with a spray of fuel to the air intake. SOURCE: What does it mean when u have no pulse in the injectors and spark plugs in a 2002 Chrysler 300M. Read about the system's weaknesses. I have spark, I have fuel pressure, I have compression, I have power to the injectors. Jump to Latest Follow removed the bracket. Have checked fuel pressure ant it is with in specs. Jan 30, 2010 #6 Aceshigh Veteran Member Lifetime Gold Member. This tester fires individual injectors in 1/2-second increments in three different ranges which are 1 pulse of 500 milliseconds, 50 pulses of 10 milliseconds, 100 pulses of 5 milliseconds. tested coil and it was ok, tested ign module under cap, tested fine, tested pickup coil and that also was fine. There is battery voltage to the injectors - which is why I am leaning more toward a faulty ECU. 2001 saab 9-5 starts then stalls, no injector pulse. I have power to computer and I also changed my computer. If you have a pulse and spark when turning by hand, but not when it's cranking - it can only be one thing. If the pick-up coil is the problem, you might be better off replacing the distributor. Engine would crank over at a normal RPM. We are using a boomslang jumper harness. No spark to distibutor. Figures 3 and 4 are how the injector pulses look like with a scope at closed throttle and wide open throttle. Spark plugs are bone dry even after X time of cranking. A few weeks ago I posted about my problem with injector pulse. bith of which are known for going bad on 5. I suggest you have someone read them for you. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) - Duration: 54:21. Dodge Dakota No Start, No Fuel Pressure Testing by ScannerDanner. You may have to remove the spark plugs to let them dry. Don't jump to conclusions like an ECM. In relation to your no injector pulse problem, check the wiring harness from the distributor to the ECM. Similar Threads - injector pulse spark Forum Date; No spark or injector pulse: 4th Gen Camaro LT1 (1993-1997 Camaro) Aug 26, 2007: Injector pulse width: 4th Gen Camaro LT1 (1993-1997 Camaro) Jun 17, 2017: Planning on doing the LT4 hot cam and have a injector question: 4th Gen Camaro LT1 (1993-1997 Camaro) Dec 3, 2017. i get no pulse. 5L the Engine crank over OK, but there is no injector pulse and no spark. Injector pulse 2. No Injector Pulse, But Gets Spark ('01-'02) Next day just turns over) Now it just turns over and no start. Also I have power at injector and plenty of fuel pressure. What I do not have is the ground pulse to fire the injectors. Is the Service Engine Soon light on when the engine is running? If so, what DTC's are stored? nothingleft09. I have good feed and control on the coil and the ckp but if I remember right that particular system has 2 ckp sensors. 0lt 6 cylinder. Jan 30, 2010 #6 Aceshigh Veteran Member Lifetime Gold Member. I have seen a good spark and no injector pulse on fords, honda, and holens(gm) and all have lead to a pcm ground, but check its voltage as well. so one nice day i. Then I started reading about the immobilizer system. 2002 camry has no spark and no injector pulse. I went through the wire job on the new module and found out he had the crank signal and ground wires backwards. Yes and its pin 20 and there is no pulse on that wire at the ecm or distributer. I did read on another forum that a noid light won't illuminate with a resistor box wired in but I'm not sure I trust that logic. Checked injectors 3-4 ohms at each. Share Thread. You may have to remove the spark plugs to let them dry. 0 v6 injector: peyton331: Engine & Drivetrain Parts: 0: 09-28-2012 10:55 PM: 92 ranger 2. The crank shaft sensor has a tendency to fail on these as well. "no" means it will not work with either, i. 17 Injector Pulse Duty Output (Trip Computer For Fuel Usage Meas. I am trying to do the first start on the car 302 with a Mass Flo. Is the PCM dead? Wore out the Haynes manual on this one, so I need you guys to help!. ordered ecm programmed to my vin # installed and performed passlock reprogram. if power is being supplied to both injectors and coils. Recommended Posts. My friend and I took the injectors on my 98 wrx swap out to test and clean them, re-instralled them and now it won't start. There was no fuel injector pulse. Swapped out computer with known good one, still no pulse from injectors. Perhaps some experienced minds will chime in. S call 951-672-8501951-672-8501. It could be the CAS also. 2006 CGM M6 18 CV8Z's, Aux input by bohnman, Red leather interior, Pedders all around, Bridgestone RE-01r's, 3. 5L the Engine crank over OK, but there is no injector pulse and no spark. Fuel pump runs, good pressure up to. I stalled new crank and cam sensor. But those damned fuel injectors just won't open on their own. -----Will not flash codes. Unless the ECU failed catastophically, I would suspect a problem with a common ground on the injectors or electrical harness plugs; especially since you have had things disconnected. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) by ScannerDanner. Tested injectors with a test light, comfirmed no pulse at injectors. No Spark, No Injector Pulse. It just has no spark and no injector pulse. Show Full Signature. Holden Commodore VS-VT Fault -No Injector pulse or Spark - Fuel pump working and pressure OK. im running an 05 rsx type s ecu with ktuner ems. I've even pulled fuel rail and hooked up a momentary switch to injectors going to ground. Discussion. Rewq246 · Registered. have no spark or injector pulse - Check the Crank sensor or the Ignition Module (and fuses) If the car does not start, establish the information required to pin the problem area down to one of the three guidelines listed above. That would show a flicker if the fuel injector was pulsing, correct?. If that harness has become disconnected somehow, the ECM will not have a pulse reference from the distributor in order to fire the injectors. Replaced the crank sensor and the engine control relay with an OEX unit from Ashdown's. So we went to fire it up, crank but no start. PURPOSE OF THIS ARTICLE Learning how to interpret injector drive patterns from a Lab. Re: No injector pulse when cranking. I have a 87 chevy s-10 with the 4-tech 2. In addition to any parameters of special interest, all data should be logged to disk. have you tried with a NOID. finding out there is good spark and fuel pressure. It uses 12V vehicle battery for power. Figures 3 and 4 are how the injector pulses look like with a scope at closed throttle and wide open throttle. No Start, No Spark, No Injector Pulse (faulty crank sensor). Sounds like you checked everything and it HAS injector pulse. The crank sensor can cause no spark and no pulse to the injectors, however, it would be the ground side of the injector harness that was missing. General Q & A - No start/No injector pulse - I know this may not be the ideal forum to be asking ski boat questions, but other sites have been little help. The owner switched the ignition module over to tbe 86-87 module. Did you check the spark on this engine? If there is no spark as well, the pick-up coil in the distributor is the most likely problem. Next i checked for spark using a spark tester then spray carb cleaner in the Tb and it starts up long enough to burn off the cleaner. I have limited data on Mercedes as I am using Mitchell Which has been of very little help. rpg5553: Built Motor Discussion: 0: 10-22-2010 09:18 AM: No spark, No. Status: Offline. Good compression , done 90,000 Miles. 2010 Chrysler PT CRUISER (VIN - 3A4GY5F94AT******) Part Numbers: Customer Report: Diagnostic Report: This vehicle has been tested several times and found to be faulty due to mecha. 02 WRX, no spark, no injector pulse. 1988 f250 460 cranks no start. Jan 30, 2010 #6 Aceshigh Veteran Member Lifetime Gold Member. My friend and I took the injectors on my 98 wrx swap out to test and clean them, re-instralled them and now it won't start. Re: 91 Z28 Injector Pulse noid light will not flash during cranking. 3 lhas no injector pulse [ 1 Answers ] 1999 Honda accord 2. We tested the power off of the coil pack connecters and they are showing that we are getting 12v so I dont think it's a grounding issue. 1 v6 automatic 4 door. no pulse at #2,3 injector. Some investigation reveals that it has no spark. I'll edit this thread as solved. ScannerDanner 145,434 views. What I have is: Fuel pressure of 38 to 40 psi, good compression and ample spark. also whats your Voltage while cranking over? ive seen the Haltechs have that issue when voltage is low. ?A while back, the car. the starter turns, distributor works, plug wires got fire, but the injector wires don't pulse. I have a no start condition. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) - Duration: 54:21. 3 lhas no injector pulse and a security light on. Pour fuel in spark plug hole and will start but will not run but for a few seconds or till gas is burned. Just replaced fuel pump and filter. I check the following items, crank sensor, cam sensor and wiring, I also check all the power input and grounds going to the ECU fuses all check OK. Electronic control of ignition timing was introduced a few years later in 1975-'76 with the introduction of Chrysler's computer-controlled "Lean-Burn" electronic spark advance system. This is called an injector pulse width. Jan 23, 2010. Jun 4, 2014. Had same problem before fuel pump was replaced) checked all grounds, checked fuses, relays, fuel pressure, spark finally no injector pulse didn't have voltage to injectors with koeo. I guess no one readsinjector pulse comes from ecm. Still no start. This means that the ability to write new posts and access various member features will go away. I would suggest repeating those tests to confirm, and also check for 12V+ at pins #87 of the Main Relay (Red base). Thing's I have checked. In relation to your no injector pulse problem, check the wiring harness from the distributor to the ECM. If you have spark, fuel, and injector pulse but your engine still does not fire we'll have to check for the third element of internal combustion: compression. Jan 30, 2010 #6 Aceshigh Veteran Member Lifetime Gold Member. You may have to remove the spark plugs to let them. Swapped no fix. It started with a spray of fuel to the air intake then stopped straight away. No spark to distibutor. First we talk about the driving of the actual injector, regardless of how often the injectors are fired. There is battery voltage to the injectors - which is why I am leaning more toward a faulty ECU. On newer gasoline direct injection (GDI) systems, however, a NOID light is no help. 5L the Engine crank over OK, but there is no injector pulse and no spark. This information may not apply to all makes and models. put a noid light on them and they have juice. If this happens, reduce the injector dead time. Next i checked for spark using a spark tester then spray carb cleaner in the Tb and it starts up long enough to burn off the cleaner. A few weeks ago I posted about my problem with injector pulse. Unless the ECU failed catastophically, I would suspect a problem with a common ground on the injectors or electrical harness plugs; especially since you have had things disconnected. The engine will run on starting fluid, but will not start other wise. ECM MODES OF OPERATION. Spark-no pulse. I read a post on Just Answers from a technician named Frank back on August 6 2006 and he spelled it out this way. Please help! Difficult problem, could be something simple? I have a Nissan Sentra 99 that will not start, was running great before, checked fuel pressure, its great, theres spark in spark plug, all fuses and relays are ok, but no pulse to injectors, nothing at all. I got a used one today. Note that if you already have a fuel table dialed in, you will need to add more fuel in to compensate. don't want to pay unless advice helps to FIX the car. The distributor problem and associated lack of spark did not show in the codes when I ran them. How to Check For Injector Pulse P0206 - Duration: 2:26. Disconnected the maf sensor no change. Tagged: Chris orlando. I checked with noyd light. Also I have power at injector and plenty of fuel pressure. Was called today to look at a car that wont start its a 92 Chevy lumina euro with the 3. When cracking engine, (testing with noid lights on spark and injector) systems get normal pulses, engine tries to start, then pulses stop. Read to measure the pulse either at the connector or to pin C5 on the green connector. I'm running ms2 3. no injector pulse, no spark, no IGN. 370 Turbo LSx LS1 Main Harness Has RPM signal while cranking (60-140) Brand new battery Has fuel pressure 60 psi (need to dial down) Holley 160 fuel injectors Pulled each spark plug and checked for spark while cranking, and they are all seeing spark. I have seen a good spark and no injector pulse on fords, honda, and holens(gm) and all have lead to a pcm ground, but check its voltage as well. 7 has spark, has injector pulse, compression 02 tundra 4. Is the ECU Bad? If this is your first visit, be sure to check out the FAQ by clicking the link above. This test will tell you if the computer is pulsing the fuel injectors open when cranking the engine over. Check for Spark. Recommended Posts. The injectors show to have power but no fire. The EEC doesn’t look up ‘injector on time’. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) by ScannerDanner. Have checked fuel pressure ant it is with in specs. Injector pulse 2. This will also throw a code, so check those. Should be 12v. Injectors not pulsing. This morning, using module #1, I cranked the engine while someone wiggled the ign module connectornothing happened. However when I tested the pins in the 35 pin plug running to the ECU I got battery voltage at pins 2,3,5,6,7,8 which means power for the injectors is reaching the computer and not. Problem with MKIV no spark or injector pulse 07-14-2009 12:20 AM #1. Silverado & Fullsize Pick-ups - 1993 C1500 5. The crank sensor can cause no spark and no pulse to the injectors, however, it would be the ground side of the injector harness that was missing. still have spark. 02 WRX, no spark, no injector pulse. After turning over that many times figured it. Still wont start. 5mS pulse occurs minus the 1mS for the injector to open and fuel flows for 1. I have voltage to both poles on the. The spark problem was the module being miswired by the person who worked on my car. Stored in the main memory chip (PROM) is the software (values programmed by GM or your custom tuner) that tell the computer, among other things, how much fuel and spark to deliver to the engine for a given set of operating conditions. (Note: if your engine has spark, this test and the EZK output stage tests are not necessary). I have a 87 chevy s-10 with the 4-tech 2. I checked all fuse box fuses. In addition to any parameters of special interest, all data should be logged to disk. 1988 f250 460 cranks no start. Please help! Please help! Every possible part I could test passed just wondering if it is an ECM problem?. No Injector pulse. 3 lhas no injector pulse and a security light on. You may have to register before you can post: click the register link above to proceed. please I need help. there is power to the distributor and power to the coil plug the scanner in no faults and reads sensors. As I mentioned I checked the trigger points and they appear to open and close that part of the circuit. 1 MS55 - 3 TA47 - 1 MS123 - 1 YR21(SR21) - 1 RX80 - 1 ST165 - 1 JZS160. no pulse at #2,3 injector. Also pulled a plug and no fuel on it however I do have fuel pressure. 1988 f250 460 cranks no start. You may have to remove the spark plugs to let them. We have narrowed it down to the fact that there is no injector pulse but cant seem to figure out the biggest question- WHY?!!?. Have helper crank the engine to see if the nylon fuel line sprays fuel. No Start, No Spark, No Injector Pulse (faulty crank sensor). 3 Whipple, Return style fuel system, dual Walbro GSS342 pumps, Aeromotive FPR, SCT BA3000 MAF, Accufab TB, SRA conversion, 604 rwhp, 581 rwtq. SOURCE: What does it mean when u have no pulse in the injectors and spark plugs in a 2002 Chrysler 300M. The duration that the valve is open- and consequently the amount of fuel sent into the cylinder- depends on the pulse width (i. spray some starting fluid in the intake and see if you get a pop. -Fuel pump (Primes)-Fuel in fuel rail's-Manually pulsing the injectors-Harness is connected. still engine. still engine. I first replaced the distributor because they were known to go bad, I checked and I thought it was bad but I was wrong. My car wont start, it cranks perfectly, but it has no spark, and no injector pulse. An engine has about 1/2 of a turn to fill the cylinder, and the injector can spray fuel well before the intake valve opens. A fuel injector is a very simple solenoid. I don't have a scope, but with the key on I have 12v on one side of all 4 injectors, which I assume means ground isn't being switched. Jump to Latest its getting fuel to injectors and a spark but its not getting a ground pulse to injectors its just getting a 12v source with. If the G signal is not present while cranking the engine, the ECU will not be able to identify when to produce the injection signal. Hi there MT. Have you checked for any DTC's. The injectors are supplied with 12v from the main relay and then earthing is controlled inside the DME to give pulse widths. Seem to have a live but no switched earth (I think that's right) Not sure if somewhere along the lines the ecu has been spiked causing an issue, or if the edis is not pulsIng the ecu, or if the ecu is the issue not pulsing the injectors. Page 1 So I know it's got spark and good pressure on the rail. I have no injector pulse. 94 Jeep No Injector Pulse: Sign In 1994 Jeep cranks fine, has spark, and has 40lbs pressure on the fuel rail, I put a noid light on a few of the injector connectors and I have no light, there are no check engines codes just the normal 12 and 55, I can hear the fuel pump when I turn the key on, when I pull the spark plugs they are dry and no. I would take a look at that cps. A faulty sensor, computer, ignition module, etc. You need to get a 12v tester and test for 12v signal at each injector clip (with the key in RUN). Well hi guys I have a 2000 Gsx-r750 i can start using starter fluid. Does the ICM control both and could it be bad even though it tested good? I'm at a total loss at this time. No injector pulse or ignition is usually active immobilizer system, esp. No "Fuel Injector Pulse" can be caused by a faulty computer, wiring, or a computer. No Start Testing Basics - Spark, Injector Pulse and Fuel Pressure (Hyundai Santa Fe) by ScannerDanner. This means that the ability to write new posts and access various member features will go away. That would show a flicker if the fuel injector was pulsing, correct?. While the CTS does not impact the injector pulse, it will affect performance on startup. The crank sensor can cause no spark and no pulse to the injectors, however, it would be the ground side of the injector harness that was missing. The only other thing that can cause this is a bad ECM and that is rare but possible. Fuel pump is providing good pressure. Checked for injector pulse and I've got nothing. If I hook up my snapon analyzer I can manually pulse the injectors so I know that all works correctly. 1997 - 2003 F150 - No spark, no injector pulse! What's up? - Hi Everyone, I've got a 2001 4. The fuel injector harness has power but no ground (signal) when cranking. You should check if there is any current coming out from fuse box. Have replaced ICM(grey box on side of distributor0, no fusible link problems, key sends power to "coil"(black transformer looking item bolted to top of engine on drivers side from which wire goes to centre post of distributor). I have a feeling that my problem lies elsewhere. 7 TBI for my son with a blown engine (rod bearings beaten paper thin and clattering), they had just put a new Bosch fuel pump in it and done some jacking around with the fuel pump relay wiring- probably because it had no oil pressure. I have a 87 chevy s-10 with the 4-tech 2. Once ecm senses 400 rpm,s from engine it takes over. please I need help. It is strange that one shorted fuel injector can cause all the other injectors to not fire, but this is exactly what can happen with a group fired system. -----Will not flash codes. The owner switched the ignition module over to tbe 86-87 module. I got a used one today. Re: No injector pulse when cranking. If there is no spark then the fuel ECU thinks the engine is stopped and will not pulse the fuel injectors. Here goes again. Because of this, any tachometer operation from this line must filter out the 64us pulses. $88 - $111. The shop found the ignition key body was broken and NATS (Nissan Anti-Theft System) immobilizer codes P1610 and P1614. Since that post I have wired in a different harness and checked all powers and grounds and I see no problem. Both are very popular for failure. If you have no spark then look at ignition coil connection and trace through to the distributor( if equipped ). It will crank but no spark, no injector pulse but the starter is trying to turn it over.