Question about 1991 Chevrolet Cavalier

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No gas, no spark, 1991 chevy cavalier 2.2l 4cyl

No gas, no spark, replaced ignition control module, coil packs, wires, plugs, ecm computer, map sensor,

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This is an all too common problem with the Cavalier and other GM J-body cars. Usually it is because of the crankshaft position sensor or the harness going between it and the DIS (aka ignition module). Without the DIS seeing a signal from the crank sensor, it doesn't know when to trigger fuel and spark.

Sometimes this can also be caused by a faulty ignition switch. The switch will allow you to "crank" the car, but it doesn't make the proper connections for the ignition system, so the car never actually runs.

The previously indicated oil pressure switch could also be causing the problem, but if you hear your fuel pump run then it's OK.

Hopefully this helps. If not, your Cavalier is as messed up as mine and probably not worth fixing.

Posted on Feb 14, 2011

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If you have a oil pressure GAUGE, replace the oil pressure switch, this controls the power to all engine functions including fuel pump, 1 way to check is turn engine over if you get no oil pressure then it will be sending unit or oil pump.

Posted on Aug 01, 2010

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Quit throwing away money and have a professional auto shop diagnose it and fix it. Find out WHY no gas and that will fix it.

Posted on Jun 05, 2010

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1 Answer

Car cranks but wont start? No spark. Changed ecm relay no help. Ignition harness is good. No fault codes. Battery is good. changed ignition relay, no help. I think its the ECM but need more info to spend...


Yes, the ECM is the last thing to replace after all other possibilities. No spark could be bad ignition coil, bad Ignition Control Module (controls the coil circuits for spark), bad plug wires, the crank and cam sensors (for ECM to determine spark timing).

Check the ICM -it can be tested at a parts store. If good, check the crank sensor.

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ECM requires both crank sensor signal and cam sensor signal to fire the coils. Check for spark at the plugs first. Check the plug wires, then the coils. Only if you have no spark at any coil would I suspect the ignition module, and even then only if you have a good crank and cam signal. Do you have any codes stored in the ECM? They could help pinpoint the problem.

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Check gas and spark. Check if fuel pump is still working. Do you have fuel pressure? Or can you check the fuel pressure? With key on, the pump should have put fuel under pressure in the lines and up to the injectors.
Check ignition system by checking for spark at one of the spark plug wires, with the engine cranking over. You need to see a blue, snapping spark to know the ignition system is good. If no spark on one wire, check another or all of them. If no spark, and no trouble codes-could be a bad crank position sensor. This sensor helps the computer calculate the timing of the spark, the main sensor the computer uses to signal for spark. It signals to the ignition control module (which controls the coils and the primary current to the coils ((the coils-where high voltage is created to cause spark at the plug)) ). So no spark? Could be a bad crank sensor...or a bad ignition control module...
If you have a single coil and not a coil pack, you might want to test that coil, but if shut down while driving, sounds like computer related, so check ignition controls: that would be crank sensor or ignition control module, or in worst case a bad PCM.

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no but the ignition module control the primary circuit of coil but at the same time tell PCM the engine rpm and then give signal to injector to spray
do you hear the pump working while key on engine off for 2 sec then while cranking have someone listen at tank fuel cap off

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Crankshaft sensor and ignition module keep taking a dump.


I would check for a short somewhere in the wire harness or check the bell for true on crank balancer make sure its not rubbing pickup

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Your ignition spark control module is going bad,your coils pack are located right underneth them. this is what tells your coils packs to produce spark to your spark plugs. they are easy to replace just make sure you mark you coil pack with some tape and make sure you put them back in the same order as they came off the spark control module. Easy to replace,just make sure you use the proper size torx or socket size on the screw heads...

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Fuel but no spark. Coil pack is fine.


Have the ignition module tested, if thats good then try a crank sensor,

Feb 26, 2011 | 1992 Chevrolet Cavalier

1 Answer

No spark! replaced the crank position sensor, plugs, wires, ignition control modual. had the coil packs checked all ok.


This sounds like a bad computer, if your sure the coilpacks are good and you replaced the module and the new module is good and the wiring to the module is good then i would say the wiring to computer or bad computer, this module and coils are hidden in the rear of the motor and go bad often but if say there all good then my next step would be the computer,

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