heater sensor inaccurate

Asked by janosterby Dec 11, 2014 at 03:02 PM about the 2002 Mercury Grand Marquis LSE

Question type: Maintenance & Repair

temp gauge on dash is misreading and will only put out decent hear starting at 80
degrees.  Any suggestions?  I checked the fuses with no change in function.

3 Answers
30,530

mikeatpriestlake answered 9 years ago

If you are sure it is the gauge, it could be the temp sending unit. They usually have one wire in them and are screwed into the block. Their main purpose is to tell the gauge what to say.

1 people found this helpful.
Mark helpful
30,530

mikeatpriestlake answered 9 years ago

I am referring to the engine block. You will have to Google the location of the sending unit for your year make and model. Understand that there is also a coolant temp sensor that is designed to tell your cooling fans to come on. Be sure to Google the one for the temp gauge. It will be the one with only one wire. The fan one has 2. Sometimes when I have trouble locating a part I go to my local auto parts store and ask them. Lots of times they will be able to tell you the location for your car. When you Google, make sure to include your engine size too. Good luck.

Mark helpful

Your Answer:

Related Questions

  • heater sensor inaccurate 3 Answers

    temp gauge on dash is misreading and will only put out decent hear starting at 80 degrees. Any suggestions? I checked the fuses with no change in function.

    2002 Mercury Grand Marquis LSE

    -

    Maintenance & Repair

  • Heater 1 Answer

    Sometimes my heater blows cold air. Other times it works fine and blows warm air. It is an intermittent problem.

    2006 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • heater 1 Answer

    Heater dont blow hot but if i rev engine up it gets hot ... What's the problem

    1994 Mercury Grand Marquis GS Sedan RWD

    -

    Maintenance & Repair

  • Air conditioning/ heater 2 Answers

    After a couple of days of a knocking noise around the on off switches. Which I was able to stop by turning the heater / air to off and presses all the buttons, I did not have cold air anymore. It j...

    2003 Mercury Grand Marquis LSE

    -

    Maintenance & Repair

  • Heater is stuck on. Blowing hot air. Ac won't work. 1 Answer

    How can I disconnect the heater ?

    2003 Mercury Grand Marquis LSE

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,860
  • #2
    Trippmeister
    Reputation
    5,140
  • #3
    Bob Beaman
    Reputation
    3,880
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Crown Victoria
5 listings starting at $8,000
Used Lincoln Town Car
7 listings starting at $9,995
Used Ford F-150
338 Great Deals out of 15,311 listings starting at $1,712
Used Honda Accord
44 Great Deals out of 913 listings starting at $1,599
Used Chevrolet Impala
8 Great Deals out of 110 listings starting at $1,500
Used Chevrolet Tahoe
20 Great Deals out of 927 listings starting at $11,900
Used Lincoln Continental
8 listings starting at $17,900
Used Chevrolet Corvette
29 Great Deals out of 1,066 listings starting at $15,871
Used Toyota Camry
53 Great Deals out of 996 listings starting at $2,212
Used Chevrolet Silverado 1500
202 Great Deals out of 5,916 listings starting at $2,975
Used Ford Mustang
62 Great Deals out of 1,288 listings starting at $4,995

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.