92 buick 3.1liter

1992 BUICK REGAL
6 CYL • FWD • AUTOMATIC
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TWOTONETOKEN
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car cuts out,******,bucks. dies. replaced fuel filter, ignition module, 3 coils, & the PCM. mechanic said I didn't need to do "IDLE LEARN PROCEDURE" after replacing coils. "a few drive cycles should reset it." It didn't. so I replaced the brain. now it runs great when it's cold, but as soon as it starts to warm up, It goes haywire and won't stay running. It finally sent a code 35. (idle speed control circuit). Will the idle learn procedure cure this? Or, should i get a new idle air control valve? Any advise would be appreciated.
Jun 6, 2011 at 6:01 PM
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JDL
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Does it only act-up at idle? If so, clean the idle air system. I haven't checked out the code 35, yet.
Jun 6, 2011 at 6:14 PM
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TWOTONETOKEN
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Acts-up at all speeds.
Jun 6, 2011 at 6:31 PM
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JDL
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In my opinion, if it acts up at highway speed. The iac should have nothing to do with it, Once you open the throttle, the iac is bypassed. Clean the iac anyway, won't hurt anything. Maybe it will help idle?

Check the coolant temp sensor, if problem is temp related.
Jun 6, 2011 at 6:45 PM