Expert: autohelp - 8/9/2005

Question
I have a '90 Chevy Lumina that in the past two months has begun to stall on me.  I have had it stall while I've been driving going 30mph - 70mph, while on a full tank of gas or only 1/4 of a tank.  I'll be driving and it doesn't matter if I'm going up a hill, down a hill, or on level ground, without any warning it will suddenly stall.  So then at that point I'll pull over to the side, and every time I'll go to restart it and it starts up without any hesitation.  It has stalled on me after I've only been driving 5 miles or 200 miles.  I can't seem to find a common denomenator of when it stalls on me.

Since it has so far started up every time for me, it hasn't caused me any major problems, however it is definitely a nusiance and gets a bit nerve wracking if I'm driving on the interstate and it stalls.

I've taken it to two different mechanics who have looked it over, hooked it up to their computers, etc and neither have been able to find anything wrong with it.

Do you have any ideas of what the problem could be or have you ever heard of this happening before?

Thank you,
Aynsley


Answer
Unlees the technician can duplicate the problem when he has access to the vehicle there are numerous possibilities that can cause this problem.

Although I cannot be POSITIVE, I have seen some intermittent faulty oil pressure switches that have caused this.