I have an 01 grand marquis my pumpkin blew out put a new rear end in from a 01 crown Victorian out of a used police car if that matters speedometer is reading fast and tripping the computer HELP PLEAS

Asked by Kpetty90 Nov 04, 2015 at 11:36 AM about the 2001 Mercury Grand Marquis GS

Question type: General

The speedometer is going to 107 and
Stopes there

1 Answer

F_O_R answered 8 years ago

The gear ratio of the rear end you installed is different that your original one. Find out what that ratio is (look for a tag on the pumpkin) and get the corresponding gear for the speedometer output on the transmission.

Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.

2001 Mercury Grand Marquis

Write a car review

Review another car

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,690
  • #2
    Trippmeister
    Reputation
    5,040
  • #3
    Bob Beaman
    Reputation
    3,770
View All

Know more, shop wisely

Search

Related Models For Sale

Used Lincoln Town Car
15 Great Deals out of 382 listings starting at $1,899
Used Ford Crown Victoria
9 Great Deals out of 161 listings starting at $2,500
Used Buick LeSabre
7 Great Deals out of 161 listings starting at $1,895
Used Chevrolet Silverado 1500
4,097 Great Deals out of 130,276 listings starting at $2,995
Used Ford F-150
6,021 Great Deals out of 127,344 listings starting at $1,995
Used Ford Mustang
932 Great Deals out of 22,942 listings starting at $1,995
Used Lexus LS
118 Great Deals out of 1,707 listings starting at $3,300
Used Chevrolet Tahoe
1,040 Great Deals out of 19,475 listings starting at $2,500
Used Chevrolet Impala
255 Great Deals out of 3,865 listings starting at $950
Used Lincoln Continental
35 Great Deals out of 602 listings starting at $9,660
Used Honda Accord
1,467 Great Deals out of 29,270 listings starting at $600
Used Toyota Camry
2,114 Great Deals out of 37,308 listings starting at $700

Used Cars For Sale

2008 Mercury Grand Marquis GS For Sale
6 listings
2007 Mercury Grand Marquis GS For Sale
10 listings

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. Content will be removed if CarGurus becomes aware that it violates our policies.