How to Fix my thermostat control on a 1998 Mercury grand Marquis LS it is staying on heat?

Asked by Ratrod69 May 01, 2016 at 06:13 PM about the 1998 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

3 Answers
5,295

Trippmeister answered 7 years ago

Lots of guys on here know more than I do about this. Vacuum hoses, stuck diverter door, controller, lots of different possibilites. One solution involves removing the dash, one can be done through the glove box, with skinned knuckles.

Mark helpful

Your Answer:

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 295 nationwide Grand Marquis listings starting at $1,399.

ZIP:

Own this car?

Share your experience with others.

1998 Mercury Grand Marquis

Write a car review

Review another car

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,700
  • #2
    Trippmeister
    Reputation
    5,040
  • #3
    Bob Beaman
    Reputation
    3,780
View All

Know more, shop wisely

Search

Related Models For Sale

Used Lincoln Town Car
23 Great Deals out of 391 listings starting at $1,899
Used Ford Crown Victoria
12 Great Deals out of 155 listings starting at $1,000
Used Ford F-150
6,060 Great Deals out of 130,219 listings starting at $1,500
Used Ford Mustang
877 Great Deals out of 23,035 listings starting at $1,150
Used Buick LeSabre
8 Great Deals out of 168 listings starting at $1,895
Used Chevrolet Silverado 1500
4,194 Great Deals out of 131,957 listings starting at $1,000
Used Lexus LS
111 Great Deals out of 1,734 listings starting at $3,300
Used Chevrolet Tahoe
1,069 Great Deals out of 20,056 listings starting at $1,300
Used Lincoln Continental
31 Great Deals out of 616 listings starting at $9,660
Used Ford Taurus
162 Great Deals out of 2,229 listings starting at $600
Used Toyota Avalon
196 Great Deals out of 2,040 listings starting at $725

Used Cars for Sale

2011 Mercury Grand Marquis For Sale
6 listings starting at $11,960
2010 Mercury Grand Marquis For Sale
18 listings starting at $5,995
2009 Mercury Grand Marquis For Sale
18 listings starting at $2,900
2008 Mercury Grand Marquis For Sale
39 listings starting at $3,299
2007 Mercury Grand Marquis For Sale
3 Great Deals out of 25 listings starting at $3,999

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.