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I have a wc 126a chipper with a 2.3 engine has no spark or pulse in the injector nor the coils any suggestion?

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  • Master
  • 708 Answers

Check the start terminal on the solenoid for power.

Posted on Nov 20, 2017

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Posted on Jan 02, 2017

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thutson66
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SOURCE: 2001 mazda protege will not start

well, with all that you have changed the only two possible things that are left PCM and the ECM....

Do you have an alarm system on this vehicle? If you purchased this car second hand it may have something that is inhibiting the engine from firing. From what you have told us here that would be where I would start looking.

I really hope this is helpfull

Posted on Aug 10, 2008

  • 1201 Answers

SOURCE: car has no spark or injector pulse(new ecm,crank sensor)

Check the fuse for the injectors, some vehicles have the injectors and coil running on the same circut, at the same time check the fuse for the ignition.

Posted on Jan 30, 2009

chain saw
  • 94 Answers

SOURCE: 96 audi a6 quattro no spark or injector pulse

I WOULD GO FOR THE ECM AND CHECK WIRING

Posted on Mar 26, 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

  • 215 Answers

SOURCE: 1990 gmc 6500 topkick with no spark or injector pulse

You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.

Posted on Sep 18, 2009

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1 Answer

92 chevy silverado truck will ecm" not let engine fire


If it has an ignition module and fuel injectors than absolutely.

Normally it is either missing spark but has injector pulse, this would typically be a bad ignition module or coil.

If it is missing both spark and injector pulse it is more likely a pickup coil in the distributor.

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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
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could be a fault in the #3 injector wiring, with the engine running back probe the wiring at the injector with a led trouble light it should glow at each pulse. a pulse can be felt by holding the injector if you have no light. compare with # I&2.

Nov 30, 2014 | 2001 Acura MDX

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I have a xc90 04 model with a 2.5 L 5 cylinder the code PO302 mise fire I did a full tune up coils , plugs ,but the number 2 cylinder is not firing . I swap coils still no fire . Checked wires and gr


if you have spark at the plug on #2 then check the injector for voltage and ground you may have a bad injector or plugged or dirty injector. it could also be a vacuum leak at the intake were it meets the head at cyl#2.

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1998 chevy monte carlo 3.1 how to test coil in engine


V6 engines have a "waste spark" design-one coil fires the plug on 2 cylinders.You can test the coils by reading across the plug wire "towers".You should get roughly the same readings on each coil(I think it was about 9 ohms,but it has been a while).If they read about the same,you could remove the coils and put a 12v test light across the primary(low voltage)terminals,you should get a flashing light when you crank it.If no light,see if you are getting injector pulse(a "noid" light is a test light for this purpose,you could rig a small Christmas tree light bulb to the injector plug as a substitute).If you aren't getting primary voltage to the coilsor injector pulse,you could have a blown fuse or bad crank sensor.

Sep 07, 2012 | Cars & Trucks

1 Answer

No injector pulse


1991 this make you OBD1 . You can access a code by jumping 2 terminals together.The injector pulse is from the PCM . If you have no pulse you need to troubleshoot for spark first . If you dont have spark do spark first then injector pulse comes on. If no injector pulse check fuse in engine junction box.Use a volt meter check grounds at PCM. If all else checks out good replace PCM. You may also want to check the TPS. If this sensor short out in the WOT position you also wont get injector pulse.SO disconnect the TPS. and recheck for injector pulse

Feb 23, 2012 | 1991 Chevrolet Caprice

2 Answers

I dont have any injector pulse.


Make certain there are no blown fuses to the engine controller or ignition system. Is there spark from ignition coil when engine is cranked over? If not, test your distributer pickup coil. If the pickup coil or ignition module are not functioning, you will not have injector pulse or secondary spark.
Good luck.

Jan 09, 2011 | 1991 Chevrolet S-10

1 Answer

Ok i had a p0302 and then i changed plug wires coil packs the icm injectors camshaft sensor and now i can a p0301 code.. and when i clear the code it will come back with the same code or else a p0300.. im...


1. Freeze Powertrain Control Module (PCM) and see if the problem can be duplicated.

2. Wiggle tug test wiring for #2 injector.

3. Scope the #2 injector for a glitch when the misfire happens. 1. Test for the Exhaust Gas Recirculation (EGR)/coolant adapter gasket leaking EGR gases past the gasket.

2. Connect a vacuum pump to the MAP sensor, block the vacuum source, reset fuel trims, start the engine and add typical vacuum to the MAP sensor and check operation.

3. Test the spark output with 2 High Energy Ignition (HEI) testers, at 25 KV air gap each, at the spark plug wires to ground at wires 2 and 3, then 1 and 4 at cranking speed and engine running.

4. Test the fuel injector pulse width at the injectors compared to the scanner data.

5. Disconnect the O2 sensor, reset the fuel trims, test the system operation in open loop, test injector pulse width. Compare to the closed loop operation injector pulse width and engine operation.

6. Test the Powertrain Control Module (PCM) powers and grounds during the problem.

Oct 13, 2009 | 1996 Chevrolet Cavalier

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