1995 Pontiac Grand Prix mileage: 51,000. I got stuck in a traffic jam a couple of days ago and my car did something it never has done before, it felt like it was going to stall. The rpm's kept going up and down. Then the next day while driving normal I had another problem, I think is related. When I drive at a steady speed, say 50 mph, the engine has a constant vibrating that makes the car shake. The only way to stop the car from shaking is to step on the gas to increase the speed. Also, something I just noticed during this time was that my exhaust makes a putt-putt sound while the car is in park and running. Are these three separate problems or interrelated? Any help on this matter I would appreciate. Could a tune-up possibly remedy any of this?
Oct 20, 2010 at 6:19 PM