Thread: 2002 Pontiac grand prix 3.8 supercharged stalls and wont start

I have a 2002 Pontiac grand prix 3.8 supercharged, that stalls out in the middle of driving after about 15 minutes. The engine will completely turn off and come to a stop. The air-conditioning, radio and everything else will still work. There is no check engine light. No codes. I replace the cam sensor, the crankshaft sensor, the ignition control module, and had my fuel line pressure tested. I will let the car sit for a while when I bring it to the shop and it starts right back up. But after driving it for a few days it stalls out again and I'm stranded on the side of the road. I brought it to the shop many different times already and there is no issue that is showing. When I try to crank the car it acts like it wants to start but will not turn over.

I already replaced th crank sensor

My mechanic put on my crankshaft sensor so I think he would check the harness but I will call and make sure.

It is the I purchase the part myself.

It is delve I purchased the part myself

Delco

Originally Posted by GoBstoPpEr

I have a 2002 Pontiac grand prix 3.8 supercharged, that stalls out in the middle of driving after about 15 minutes. The engine will completely turn off and come to a stop. The air-conditioning, radio and everything else will still work. There is no check engine light. No codes. I replace the cam sensor, the crankshaft sensor, the ignition control module, and had my fuel line pressure tested. I will let the car sit for a while when I bring it to the shop and it starts right back up. But after driving it for a few days it stalls out again and I'm stranded on the side of the road. I brought it to the shop many different times already and there is no issue that is showing. When I try to crank the car it acts like it wants to start but will not turn over.

Dumb question here, have you tried replacing your fuel pump/fuel filter? Maybe check your sparkies/wires too, just to err on the side of caution?

Also, when it cuts out, do you ever smell fuel?

Hi you said you replaced the ignition module have you replaced the coil pack towers there should be six of them one for each cylinder you might want to replace your coil pack towers that might be the issue? I would also do research on intermittent coil pack power related issues but you might want to try that that's off the top of my head I don't know your situation but I thought I'd offer that good luck!

No, there are 3 coil packs, which fire 2 cylinders each. These cars don't have COP from the factory.