Hi I have a 1997 Pontiac Grand Prix GT. I put a little less than 30,000 miles on it since I bought it in 2002. But when I first bought it the transmission went a few days after so the dealer rebuilt the tranny. After that it sat for 3 years. And now that I got it running 2 years ago Ive been having a problem. When Im on the highway or high speed limit road around 40mph the rpms drop to 2000 to 2500 and will just stay there until I floor the gas pedal or let off then back on the gas. Once I do that the rpms go back up and its fine but itll continue doing that from 40 mph and up. I replaced spark plugs and wires, alternator, belts and I had the transmission fluid flushed. I would really appreciate it if you could give me some insight on what it could be as I am not able to afford a new car and this is my only means of transportation. Thank you very much for your time and whatever answer you can give me.
have the same problem?
Wednesday, December 15th, 2010 AT 2:11 AM