Pontiac Grand Am - Toyota Nation Forum : Toyota Car and Truck Forums

haux · 06-23-2009, 11:01 PM

Somebody I know is having difficulty with his 2000 Pontiac Grand Am. I cannot find a decent Pontiac forum, so I figured I'd ask here and see if maybe this is not car-specific problem.

The problems he has described include the following:

1) At high speeds, when you release the accelerator, the car will slow down to 50mph and remain at that speed.
2) High idle.
3) The engine will stall/shut down at random.

Any ideas?

Mike Gerber · 06-24-2009, 08:34 AM

I really have no experience with Pontiacs of that vintage, but if it were a Camry I would say start by cleaning the throttle body. It may be very dirty and the throttle valve inside of it may be sticking and causing the problems.

Mike

haux · 01-22-2010, 05:38 AM

I've been going back to post final updates on some of my old threads.

Thank you Mike for the information. I relayed the info to my friend shortly after your post. He cleaned the TB and said that his car has never run better!

Hajoca · 01-29-2010, 01:25 PM

The coasting at 50 though, I experienced in my 88 bonneville.

The engine had enough torque to let it coast for a really long time.