I have a 99 Oldsmobile intrigue. I bought it used, and my problem is this - why does it keep stalling out on me. It does it at speed and at a stop. It seems to only do it once a week (or thereabouts). We have had the GM dealership here look at it, no problems on the computer that they could see. Replaced the Battery, fuel filter, and relays from the fuel filter to the engine. Now what??? Please Help!!!!!!
Hello,Issues like this can be hard to diagnose or even duplicate to diagnose it. These 3.8L engines are known for the mass air flow Sensor to cause issues like this. The mass air flow sensor (also called a MAF sensor) reads the amount of air coming into the engine and the computer uses that to determine the fuel mixture. If the sensor gets a little off, it can cause it to stall. Sometimes they will cause a code to set, but they have to act up for about 30 seconds to get the code to set. The mass air flow sensor is located on top of the throttle body. See picture below:A couple of things you can do:
So if it is the MAF, it would also explain why it is that the car would turn back on as if nothing were wrong, as it does in most cases? The last time this happened, though, it took a few minutes of turning the key for the engine to start again, and the lights that come on are the oil light, security light, and seatbelt light when this happens. I am really at my wit's end with this problem.Thanks for the help!