2001 Pontiac Grand Prix Questions

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I had the key for my car copied and didn't realize that it wasn't a microchipped key. My car was running perfectly. Then I tried to start the car with the new key. Started fine, stalled 3 seconds later. Did this twice, figured out the new key wasn't microchipped. Have been using my original key since. However, now my car won't accelerate, even on highways. Once up to running speed, it runs great, but it still sounds like it wants to sputter and it seems to sputter louder when idling. It doesn't stall, it just sputters. I don't know how to describe it, but when attempting to accelerate, it feels like the car can't breathe. Any ideas?

My 2001 gtp will run fine then stall, I changed the crank shaft sensor and checked the fuel pressure and the has lines. Here's the thing though when we ran it for codes nothing came up! And I even unplugged the maf sensor to see if I would blow a code and it didn't..., so my question is; is it the computer or what!?!?!? Helpppppp he

I have codes p0440 and p0442

My fuel injection system experienced an explosion destroying the manifold, what is the potential cause? Is the a replacement of timing belt/chain?

I can acess the unit via a panel in the trunk should I just replace the whole fuel pump I assume that is where the pump is under that panel then I have to remove it from the tank is this the corret procedure to repair it?

When I drive my car over 50 the car starts to shake and the steering wheel turns hard to the left what is this?

2001 pontiac grand prix 3.8 w/170k miles...turn the a/c on and the car clicks (sounds like something is clicking on an off repeatedly) while clicking my rpms start jumping up and down from 300 to 1500 and the a/c stops blowing cold and blows out fire hot air instead of cold

My car will start after sitting a few days but will sputter off almost immediately after being started

I changed my crankshaft position sensor now my car will not start. it will crank but will not fire up. I checked using a spark test lamp, i am getting power to my spark plugs but the car will not start. i tried putting the old one back on still had the same result. What do I need to try to hopefully get my car to start?

happens the faster you get but stalls worse and shuts off when slowing down or come to a stop

was told it was a ten min job just pull it out and replace with new but dont know where it is any ideals ?

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