Thread: 2002 Grand Prix Gt stalling.

I have a 2002 Grand Prix GT and lately it has been giving me fits. When I am driving at low speeds (like through a parking lot) and I take my foot off the gas it wants and does stall. When I am driving at about 45 and go to get on the expressway it has no power. It gets up to speed it just takes its time. I also have noticed the rpms are getting high before it shifts gears. I have changed MAF, TPS, MAP I changed throttle position twice. I was thinking I maybe got a bad one. I don't know what else to check. Now I hit the remote start it starts the car and then shuts off right away.
Please Help!!

Uim?? Iac???

Could my cat be clogged and not pull a code?

Ok yes my son did clean that and changed the idle control valve. My car is pulling the code for accelerator position sensor now. I think it is pulling that because of the remote start not working correctly. I am going to have my cat checked. If I have a bad cat does it always pull a code? I know I was having some raddling under my car and it has sounded different.

i had that exact same problem last year with my 2000 GT. have you used sea foam recently? turned out mine was a clogged cat. when i stepped on the gas i had no power, and my straight piped exhuast was a lot quieter. that was the first clue. if you have anymore questions feel free to message me,

Thank you!