I have a problem with my 1998 Grand Prix GTP that is causing major headaches.
When I go out in the car to do some errands the car will drive normally until I’ve done about 8-10 miles of stop & go driving, with the engine being switched off during my periods of time in stores, etc. Then with very little warning the engine will die, sometimes making a rattling sound. I have discovered that when this happens if I unplug the connector to the Ignition Control Module, and immediately reconnect it, the engine will start again and run normally until this happens again.
In recent months I have posted on this forum about a couple of other issues that have been answered but I figured I would mention them in case my current problem is related.
The first one deals with a non-start issue that was fixed when I replaced the Crank Position Sensor. The ERG valve was also replaced because of the ODB II fault code I was getting at that time. The second deals with a concern about a dent in the oil pan, and I did mention this current problem at the end of that thread because that’s when it first started happening.
http://www.grandprixforums.net/engin...art-67639.html
http://www.grandprixforums.net/oil-pan-69455.html
So far, as mentioned, the crank position sensor and ERG valve have been replaced. I have also replaced the Ignition Control Module. I have checked everywhere I can for any damaged wiring or connectors without finding anything. The engine is not overheating, the Service Engine Soon light is not lit, my CarMD scanner is not reporting any error codes.
Any help would be appreciated.
