why does it top out at 170 km per hour?

Asked by May 22, 2008 at 12:17 PM about the 1997 Pontiac Grand Am 4 Dr SE Sedan

Question type: General

I wanted to see what my car could do, but when it got up to 170 km/h it just stopped accelerating.

3 Answers

55

The reason behind that is probably because the car has a governor that restricts how high you rev the motor and how fast you can go. You can change that by changing the computer chip or getting a computer to plug into your car computer and change everything to get more hp, go faster, and rev higher.

1 of 1 people found this helpful.
680

computer govener on the older car you can get a wire diagram of the computer harness and clip the govner wire however if you dont know what your doing i wouldnt touch it you could do mor eharm than good check with your local mechanic

65

The govonor is controlled through your Powertrain Control Module (PCM). Inorder to bypass it you can either have the speed limiter removed using tuning software, or shift into "3" on the automatic transaxle and continue. I've had my 99GT up to 220 KM/H using the 2nd method

1 of 1 people found this helpful.

Your Answer

Grand Am

Looking for a Used Grand Am in your area?

CarGurus has 1,037 nationwide Grand Am listings and the tools to find you a great deal.

ZIP:

Pontiac Grand Am Experts

  • #1
    tenspeed
    Reputation
    7,890
  • #2
    John Saffrahn
    Reputation
    1,610
  • #3
    Tom Demyan
    Reputation
    1,580
View All

Related Models For Sale

Used Pontiac Grand Prix
12 Great Deals out of 2,553 listings starting at $1,750
Used Pontiac Firebird
10 Great Deals out of 767 listings starting at $2,500
Used Chevrolet Camaro
503 Great Deals out of 33,525 listings starting at $1,450
Used Chevrolet Impala
563 Great Deals out of 36,779 listings starting at $990
Used Ford Mustang
608 Great Deals out of 39,004 listings starting at $1,500
Used Toyota Camry
1,007 Great Deals out of 101,202 listings starting at $300
Used Honda Accord
1,200 Great Deals out of 74,751 listings starting at $561
Used Honda Civic
774 Great Deals out of 67,983 listings starting at $999
Used Ford F-150
3,205 Great Deals out of 239,355 listings starting at $1,300
Used Chevrolet Monte Carlo
9 Great Deals out of 1,236 listings starting at $1,488

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.