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1992 Lesbre stalls


russ3654
05-25-2008, 09:54 AM
The problem started with the check engine light coming on and loss of power. Then it would not start when hot wait 10 minutes starts right-up. Now it starts hard, stalls out. No engine code. Changed fuel pressure regulator, fuel fitler, plugs ( car has 80k miles). Put fuel gauge on reads 40 psi all the time. Replaced crank position sensor, cam position sensor. When the key is on and not started in diagonstic mode the idle air control valve and cooling fans come on and off is this normal. The PCM coolant temp sense is 3.8k ohms at 50 degrees cold. Any ideas. I now replaced ICM
checked wiring and ohmed-out the grounds. Same problem. I gave it a shot of starting fluid, it wouldn't fire, showing spark.
For the hell of it I turned the key this morning and it started right-up, it ran great for about 4 minutes and just died. Crank it over and it won't start. Plulled a plug, have a good blue spark. Gave it a shot of starting fluid still won't fire. I heard a plugged convertor can cause problems like this. Next I'm going to try pulling the o2 sensor vent the exhaust down and try running it. Should I try the PCM? Any Ideas

HotZ28
05-25-2008, 09:12 PM
Sounds like this could be the ICM, associated wiring, or ground problem under the ICM. Have you removed the ICM and had it tested? If you have it tested, be sure to have it tested several times to simulate engine heat.

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