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I hav a1995 vs calais v6 and have a 1994 vr calais 5.0l efi and ive converted the vs to a v8 i got spark i got fuel but no injector pulse i got my custom chip reprogramed with vs tune n stil not run

If i get the vats taken off should it then go

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

johnny5846
  • 379 Answers

SOURCE: no injection pulse

looking at the schematics, well the PCM controls the pulse width to the injectors , BUT , there is a injector coil fuse , its #2 in your kick panel fuse box , a 20 amp , check it , sure hope that fix ya . that would be sweet .

J5

Posted on Jan 15, 2009

  • 383 Answers

SOURCE: Little to no injector pulse only when starter is engaged

95-97 Maximas had a problem where condensation from the A/C would accumulate in the a/c evaporator case from the drain becoming restricted or blocked, When this would occur, condensation would drip onto the ECM and a problem would develop with misfire and/or starting. I would look at the ECM where the harness connects to it for corrosion problems. If you find it, there is a chemical spray which can be used to clean the terminals and/or you can clean them, although it is time consuming and difficult to due because of how small the terminals are. After things are cleaned up, lightly coat the connections with a dielectric grease. This will prevent electrolysis.I believe you can buy these at Radio shack and possibly at an automotive parts supplier.
Also a drop in voltage during the cranking phase will cause a weak spark. Your ignition is what pulses the injectors. It takes a minimum of 9.6 volts, but ideally you want at least 10.5 or more during the cranking phase if you want to get a spark worth anything. Check the voltage on the primary side of the coil while cranking the engine.
I'll watch to see if things work out for you, let me know. ....mybunkey

Posted on Apr 18, 2009

Molson02536
  • 3854 Answers

SOURCE: 1985 corvette no pulse to injectors

Very important that if you are not savvy of working on your Vette ...you would be better off - taking your car to a dealership for repairs on your trouble codes. However if you feel that you want to, First locate your car's alcl this component is located just below the instrument panel and to the left of the center console. Remove the plastic cover the first two slots to your right are the A & B slots.
The A slot is the diagnostic slot and the B slot is the ground slot. Insert the computer key into these slots if you do not have a computer key, a paper clip or wire jumper clip will do, (with the engine off) this is very important...now only put the ignition key to on ( not start !!!) the check engine light will display a code 12 which is one flash followed by two flashes. This code will be flashed three times ..followed by the trouble code stored in your car's computer.

What ever the code is it will be flashed three times. Have a paper and pencil ready and write down the code.

Code #12: Normal No Codes. 
Code #13: Open Oxygen Sensor Circuit. 
Code #14: Coolant Sensor Circuit Low.
Code #15: Coolant Sensor Circuit High. 
Code #21: Throttle Position Sensor High. 
Code #22: Throttle Position Sensor Low. 
Code #23: Manifold Air Temperature Circuit High.
Code #24: Vehicle Speed Sensor. 
Code #25: Manifold Air Temperature Circuit Low. 
Code #32: EGR System Failure. 
Code #33: Mass Air Flow Sensor High.
Code #34: Mass Air Flow Sensor Low. 
Code #36: Mas Air Flow Sensor Burn-Off Function Fault. 
Code #41: Cylinder Select Error. 
Code #42: Electronic Spark Timing.
Code #43: Electronic Spark Control. 
Code #44: Lean Exhaust indication. 
Code #45: Rich Exhaust Indication. 
Code #46: Vehicle Anti Theft Fault. 
Code #51: Faulty Mem-Cal. 
Code #52: Fuel Calpak Missing.
Code #52(1990-91 Corvette Only): Engine Oil Temperature Sensor Low. 
Code #53: System Over Voltage. 
Code #54: Fuel Pump Circuit Low Voltage. 
Code #55: Defective ECM. 
Code #62: Engine Oil Temperature Sensor Circuit High.

Please remember that if you have the computer key installed in the alcl and you start the engine (you will ruin the engine's computer) only put the ignition to on (not to start).

If you should get a check engine soon display.. you can use the above procedure and codes to buy the right part or at the very least to keep from getting taken for a ride and be made to pay hight prices for some inexpensive module that you could have installed yourself.

If your engine displays a trouble code ... your engine will go into limp mode ..it will still run but very poorly. You might be able to reset the computer if it will not start (just to get home) by disconnecting both battery cables and re-installing them ...this is not recommended ..but if you are stranded it might help unitl you get your car home or to a repair shop..good luck.

Good luck and hope this helps. 

Posted on May 08, 2009

fingaz22
  • 1068 Answers

SOURCE: on a 89 camaro iroc with tune port injection we

no not yet i wouldn't change the computr. check to see if there is voltage pos. at one or more of the injector lugs! if not then there is a fuse for them tht may be bad. first check fuse near battery it is in and black plastic cover boted to thefender if it istill mounted and someone didn't nbolt it. then ifthat 25 amp fuse is good checktheones under the dashand also a signif tht fuse nearthe fender is good or not is if the fuel pump is kicking onand the check engine ight work when the key is inthe on position. let me know if you have juice there atthe injectors and if so then iwould check the wire from thecomputer toinjectors if good then iwould say the computerisbad. but let me know and wecanwotk through it.i hve three of these cars i love them. good luck

Posted on Sep 27, 2009

Testimonial: "yes there is fuel getting to the rails and the computer i have already changed there is fire getting to the injectors both wires are hot when you turn"

  • 1 Answer

SOURCE: mercedesw202 c200 pms ecu system . car wont start

Hi I have a 1995 C200 Auto Sedan chs WDB 2020202F241703, I think I have a problem in the ECU. Only runs on two cylinders, I have changed the core pack on the 1 & 4 cylinders but the problem persists. The other problem is I don't know where the ECU (engine computer ?) is can anyone help ?

Posted on Feb 21, 2011

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No spark no injector pulse


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2011 swift 1.5 no injector pulse no spark


blown fuse. ; is first, as per always.
2nd is scan it, did you scan it yet? that is always 2nd.
all efi engines, all ECU , all cut injectors for (noid lamp test dead?)
you said pulse,does that mean fuel pulse or electronic pulse to injector coil..... ? all injectors dead. or just 1. same for spark.
toss coin land, noid dead. all noids
loss of. NOID signals.!
1; spark
2: lose of CMP or CKP signals (cam or crank senders)
3: ecu sees wide open throttle it cuts fuel 100%
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Apr 01, 2015 | Suzuki Swift Cars & Trucks

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Cylinders filling with gas


No it cannot. Most likely ur vehcile is EFI (Electronic Fuel Injection), which means that current must be floweing for the injectors and the fuel pump to be working. The pump allows the flow of fuel.

Mar 13, 2009 | 1987 Ford Ranger

1 Answer

1990 Calais 3.3L No Start


it would be the crank angle sensor which tells the computer if the engine is turning and at what speed and when to spark

Nov 08, 2008 | 1990 Oldsmobile Cutlass Calais

1 Answer

Fuel pump only comes on in start position-goes off in run


Is it EFI or carby?

EFI, is ther an injector pulse and spark?

carby, does the oil pressure light come on before cranking?

Jul 15, 2008 | Hyundai Excel Cars & Trucks

2 Answers

EA FORD


Dazzad

Im assuming this is a 3.9 ltr 6cyl?
any way there is always three things to check in regards engine not starting.

1. Compression
2. Spark
3. Fuel. "make sure you have fuel in the tank" first :)

If your vehicle is EFI

If you cannot smell fuel. Carry out these simple checks.
When the ignition is on engine off, Do you hear the fuel pump prime. This is noticeable by a short buzzing noise in the rear of the vehicle and then it will stop,

If noise is not present check the fuel pump fuse, then the relay, and last of all the fuel pump.

If the fuel pump is operational.
Make sure the fuel filter is not blocked and obstructing delivery of fuel to the injector.
If the fuel filter is ok, remove the injector plug from a injector and using a led circuit tester, or a noid lite. check for injector pulse.

If there is no injector pulse then it would possibly be a ignition module http://www.injectacarb.com.au/ford-falcon-eaed-ignition-module-p-40.html if this model of vehicle still uses a distributor

This only because I dont know if your vehicle is 3.2 ltr, 3.9 ltr single point inj, or 3.9 multi point inj,

ps: To check for injector pulse, using a LED TEST light just connect the test light in between the 2 terminals off the injector plug, and check for flickering of the led, this will say that the injector is pulsing.

A noid lite basically justs fits into the injector plug .

I hope this helps, let me know if you need more help.
Regards.


Jul 04, 2008 | 2000 Ford Focus

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