can you tell me why my speedometer is double the speed im going on a 1990 grand prix 3.1 turbo but window display is right on

Asked by Jul 08, 2013 at 04:00 PM about the 1990 Pontiac Grand Prix 2 Dr Turbo Coupe

Question type: Maintenance & Repair

i put details in the question  what do you want to know more about

1 Answer

you need a scan tool and drive it while watching the Vehicle Speed Sensor (VSS). The sensor may be out of whack~

Your Answer

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,590
  • #2
    Tom Demyan
    Reputation
    3,170
  • #3
    munron
    Reputation
    2,600
View All

Related Models For Sale

Used Pontiac Bonneville
4 Great Deals out of 406 listings starting at $1,995
Used Pontiac Grand Am
937 listings starting at $2,295
Used Ford Mustang
348 Great Deals out of 41,846 listings starting at $1,488
Used Chevrolet Camaro
389 Great Deals out of 31,491 listings starting at $3,000
Used Pontiac Firebird
6 Great Deals out of 690 listings starting at $3,911

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
5 Great Deals out of 376 listings starting at $1,900
2007 Pontiac Grand Prix For Sale
322 listings starting at $4,499
2006 Pontiac Grand Prix For Sale
431 listings starting at $4,000
2005 Pontiac Grand Prix For Sale
306 listings starting at $2,499

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.