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88 GP stalls when hot & won't start again until cold

MarkUSAF

MarkUSAF

New member
I've replace pump, fuel filter, MAF and ignition control mod with new coils & cat converter. Nothing has fixed problem. Runs fine immediately after starting. When op temp is reached, the stalling problems start and progressively get worse. Once it stops (or I stop it), it won't start for about 3 hours. Could it be crank sensor or map sensor or throttle position sensor or coolant sensor or even ECM?
 
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Have you tried checking for codes? I think that year is ODB1. It sounds like something electronic is heating up and failing. Could be the ECM.

When it begins to stall does the tach drop to 0 before the car dies? If so then the crank position sensor could be it.

When the car will not start you need to verify something. Do you have spark at all? This may help lead you to a cause.
 
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I get no codes, yesterday I changed the crank sensor and coolant sensor. I have 3 possibilties left, the MAP and throttle position sensors and finally the ECM. I'm beginning to think it's the ECM. If nothing works, it's going to GM.
 
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