what would cause a car to accelerate on its own?

Asked by Apr 04, 2017 at 01:50 AM about the 2005 Pontiac Grand Am SE

Question type: Maintenance & Repair

My 05 grand am starting accelerating on its own. While driving home I
realized that I hadn't used the gas pedal for a few blocks. I thought "hmmm,
interesting". The car wasn't slowing down and kept speeding up. I thought is
the cruise on? I clicked the button and nothing. Braked and it slowed but as
soon as my foot was off the gas sped right back up. I finally was able to pull
over and stop. Shut the car off and restart and it was fine the rest if the way.

3 Answers

945

Strange as it has a cable driven throtle body. Maybe the cables are used and stick sometimes, or maybe the idle air control valve on the body(used or the o-ring could be the problem). You could also have a losen clamp and have more air an necessary. Try spraying some spray near the throttle body and the hoses.

7,455

make sure the cruise control is off

120,005

Maybe a bunched up floor mat. In my estimation 99% of unintended acceleration is operator error.

Your Answer:

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 19 nationwide Grand Am listings and the tools to find you a great deal.

Postal Code:

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    8,130
  • #2
    Tom Demyan
    Reputation
    1,680
  • #3
    John Saffrahn
    Reputation
    1,650
View All

Related Models For Sale

Used Pontiac GTO
5 listings
Used Pontiac G6
109 listings starting at $4,411
Used Chevrolet Impala
22 Great Deals out of 879 listings starting at $2,894
Used Ford Mustang
34 Great Deals out of 1,238 listings starting at $4,685
Used Chevrolet Malibu
32 Great Deals out of 1,807 listings starting at $2,950
Used Honda Civic
106 Great Deals out of 4,734 listings starting at $1,500
Used Dodge Charger
45 Great Deals out of 925 listings starting at $3,500
Used Chevrolet Corvette
9 Great Deals out of 518 listings starting at $10,700
Used Chevrolet Cobalt
213 listings starting at $1,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.