1999 Pontiac Grand Am acceleration problems

Filed Jun 3, 2023 · Acceleration, Electrical · TN

The gas gauge will show full then without warning quickly drop to “E” and the low fuel indicator will ding and the light will come on then just as quickly as it started it will go back to full or 2/3rds the slow creep back to the full position. (The tank was not full) While driving all the electrical components start going wild, everything goes on and off quickly. The accelerator will rev(while foot is on or off accelerator) and drop over and over (as if there were bad gas in it) then go back to normal. This happens while I’m on the road and is a massive hazard. I’m so afraid this will cause an accident that leads to loss of life.

Filed May 17, 2014 · Acceleration, Engine · 182,000 miles · MN

Well I own a 1999 pontiac grand am se coupe, and I noticed about two months ago at 50-60 MPH (or 2000 rpms), the cars speed and rpms would decrease about 2 MPH and the rpms would decrease about 500 rpms, then it would return and it would do this every time I was at that speed, also now when I accelerate to 60 and if I let the car decrease speed the temp gauge would skyrocket and after about 1/8 a mile it wouldn't let me increase speed along with that my electric fans in the car have never engaged, I love this car and I don't want to get rid of it. Also I had the transmission checked and its not that.

Filed Feb 22, 2010 · Acceleration · 75,000 miles · FL

Several times in the past engine rpms stay at the speed you are going until you shut engine off and restart. Braking is not very effective at that point. No accidents yet / been close ,need to put in neutral or shut key off to stop. This problem started first time at about 75,000 miles it can happen at any time or speed ,I would say it has happened about 10 times over time.the car has 200,000 miles vehicle is in perfect shape except for the one problem.

Filed May 20, 2005 · Acceleration, Brakes · KY

Dt: contact owns 1999, pontiac, grand am. The contact stated while going around a curb she lost control of steering. The ABS light and the air bag light came on. While pushing the brakes it was like the vehicle was not even starting because brakes would not stop the vehicle. When the contact finally got off the road she pulled on the emergency brake to stop the vehicle. She turned the vehicle off, and when she went to restart the vehicle wheel loosened . She put vehicle in drive, pushed on the accelerator, and then pushed on the brakes and everything was fine. Also, contact stated that while starting the vehicle the rpms and speed odometer revved up to 120 MPH and back to 5 MPH before she even moved the vehicle or pressed on the accelerator. This almost caused her to hit another vehicle.

Filed Nov 3, 2004 · Acceleration, Seat belts · 40,000 miles · OK · crash · 1 injury

While attempting to stop vehicle continued at a high speed. As a result, vehicle crashed into a telephone pole and rolled over. Driver was ejected from the vehicle and was pronounced dead. Also, seat belt did not restrain the passenger, and she sustained major bruises on the upper thighs.

Filed Oct 7, 2003 · Acceleration · 63,000 miles · MD

Vehicle would suddenly accelerate to approximately 50 MPH or more without the foot on the accelerator pedal. Vehicle I was slowed down when the brakes were applied. Have taken vehicle to dealer, and mechanic was unable to determine the cause of the sudden acceleration.

Filed Feb 24, 2003 · Acceleration, Electrical · 30,000 miles · AL

My car is a 1999 pontiac grand am gt. I have 55,600 miles on the vehicle and have had nothing but problems with the vehicle. Before the car even had 30.000 miles on it, the alternator went bad (I was initially told it was a bad battery, so in addition I purchased a new battery), the steering wheel was replaced, and the dome lights were replaced. Between 30,000 and 50,000 miles, the electronic throttle regulator went bad, the engine coolant system cap leaked and damaged my belts, and the intake gasket is leaking. With a new car, this is an unreasonable amount of defects and I needed to know how to report this car as a serious hazard or as a serious lemon.

Filed Jun 15, 2002 · Acceleration, Brakes · MI

Cigarette lighter does not work, hazard lights and blinkers work intermittently, gas cap is broken, windshield has 3 chips, radio volume knob works intermittently, steering has jerked when rounding corners, heater fan speeds 1 and 2 do not work at all, cruise doesn't work intermittently, rubber molding on door coming off, dealer says need all new brake pads and front rotors

Filed Mar 19, 2002 · Acceleration · PA

This car when started will rev up to 2000 r.p.m. And stay there. Have had it back to dealer and unable to duplicate. This problem has no set time period. This car is now out of regular warranty and on extended coverage that I purchased. I am now going to my local service center. He has replaced the I.a.c. Unit to no avail. What next? This is a serious safety problem. The car just revs up and goes.

Filed Mar 12, 2002 · Acceleration, Airbags · NY

Horn is located beneath the SRS module. Pressing the horn at the SRS module will not work. When lock button on the security is pressed horn will sound off. Cruise control and airbag do seem to be affected. Dealer was notified and are inspecting clockspring. *jg