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2001 Pontiac Grand Prix Questions

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Once it warms up 15-20 minutes,it will remain cranked but jerks into gear. Sometimes at a red light I will need to have my foot on the brake and gas to keep it from cutting off. Please help.
what else could cause this light to come on i have changed the purge valve under the hod changed the vent valve in the wheel well checked all the lines they look good i dont think i have a bad pcm but if i did what would i check before i take the pcm out and get a new one i was told the canister but idk if thats the issue i never hade this issue before it just happende a few months ago and my inspection is over due.................. HELP!!!!!!!!
passig cars acceration slow
while passing a car accelration slow
It was on for a month or so and i was told it was probably a piston misfire and i needed to change the catalytic converter, so will it comeback on or just stay off till somthing else is wrong?
window regulator?
i had what i thought was the ignition switch replaced on my Pontiac grand prix gtp 2001. i am still having same problems. i am now being told that what i had replaced was the lock cylinder if that is in fact true wouldn't i have received new key?
I'm not getting any heat in the car. The a/c seems to be working fine. No overheating issues. Antifreeze is full.
Any ideas??
Thanks
After the car sits for a few hours, the blower doesnt work sometimes when I start it. It usually kicks on after a short time, however, today it wouldn't come on at all.
Any suggestions?
Thanks
While driving down the highway and around town the door locks on our Grand Prix almost continually cycle to the lock position. The locks never unlock unless you push the button on the key fob or the door. Somedays they operate normally then the will chatter all day. The lock delay works normally when you close the doors. Any suggestions?
the pump was bunrt out and was throwing a code so i replace the air pump
When I bought this used car (100,000 miles)it had a new catalytic converter on it. Shortly after that I got a SES light and the dealer said the catalytic converter had failed again. He replaced it. 5000 miles later I have a SES light and had a local garage I trust scan it. They got code P0420, converter failed. They say the dealer used an aftermarket converter and you need to use an OEM unit, $586 is the friendly price for a Magnaflow unit!
Here is a run down of the problems. Listed as running lean I have a fuel pressure of 30psi not the 48-55psi required. all lines checked and good. Fuel pump is good. Have been told that the piston rings may be out and need replacing. Also got told that problem might be in the fuel injectors may be clogged, but wouldn't the lines be over pressure if at the end of line. However car starts fine when cold. Will not start when hot or has been running for more then 30 minutes, car must sit for an hour at least to be restarted. Makes chugging sound when initally started then evens out. Also car shimmies at 42mph and 74mph. No idea why the shake but rides fine at any other speed, odd.
WHERE DOES THE WINDSHIELD WIPER MOTOR COVER ASSEMBLY GO?
when i put car in reverse the car shuts off
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