Heater in a 1997 Grand Mercury marquis

Asked by Mar 18, 2017 at 10:30 PM about the 1997 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

I have a 1997 grand marquis, when i
turn my heater on it gets cooler instead
of hot. I wanted to say it was the
blower motor but it still blows, what
could it be?

5 Answers

73,095

Probably one of two things. either the HVAC Heater Control Valve in the heater hose, or the thermostat needs changing out. If it were the thermostat, you would notice your temperature gauge not getting to normal temp.

1 of 1 people found this helpful.

My temperature gauge is reaching normal temp so its not the thermostat. Where is the hvac located at?

73,095

Good morning. It is located under the hood in one of the heater hoses. Check this sight out for a picture... https://www.carid.com/four-seasons/hvac-heater-control-valve-mpn-74852.html?singleid=228464582&url=1266217

2 of 2 people found this helpful.

I appreciate it sir & good morning to you as well. Ok any other problems to look for when my heater is blowin air instead of heat? I dont think i hear it switch over when i turn it to defrost, vent , or floor could that be why its not getting hot

73,095

Yes that also, there are HVAC Blend Door Actuator under the dash,this sounds like its more of the problem. You can check your heater hoses to see if their both hot when the temperature control is set on hot. That would be checking the to see if the Heater Control Valve is open for heat. So this is what the Blend Door Actuator looks like... https://www.carid.com/1997-mercury-grand-marquis-air-conditioning-heating-parts/dorman-hvac-heater-blend-door-actuator-16860363.html

1 of 1 people found this helpful.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 5 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,700
  • #2
    kbro
    Reputation
    2,120
  • #3
    Js08016
    Reputation
    1,850
View All

Related Models For Sale

Used Ford Crown Victoria
9 listings starting at $5,995
Used Lincoln Town Car
12 listings starting at $1,850
Used Chevrolet Impala
72 Great Deals out of 928 listings starting at $1,900
Used Ford F-150
451 Great Deals out of 9,038 listings starting at $922
Used Ford Mustang
11 Great Deals out of 1,172 listings starting at $2,995
Used Chevrolet Tahoe
5 Great Deals out of 639 listings starting at $6,871
Used Ford Taurus
21 Great Deals out of 300 listings starting at $2,973
Used Buick LeSabre
15 listings starting at $1,400
Used Honda Accord
69 Great Deals out of 1,098 listings starting at $748

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.