1999 grand marquis

Asked by Mar 04, 2016 at 11:16 AM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

back in the middle of the winter the ac compresser baring locked up so installed a bypass pully. so only heat worked no cold air. couple days ago i heard a knocking coming from vents turned off the heater and the knocking stopped. turned back on the knocking continued after a while the knocking stopped but the heat stopped working i would have the heat on 90 and on high but cold air blows only..put it on defrost but only blow out of vents... i checked the blower motor and dont think thats the issue... need help i was told might be heater core but looking for second opinion..

1 Answer

73,675

Probably the HVAC heater blend door actuator that controls the flow of air, and a HVAC Heater Control Valve that controls the heat.

1 of 1 people found this helpful.

Your Answer

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,730
  • #2
    kbro
    Reputation
    2,130
  • #3
    Js08016
    Reputation
    1,870
View All

Related Models For Sale

Used Ford Crown Victoria
4 Great Deals out of 1,187 listings starting at $2,900
Used Lincoln Town Car
28 Great Deals out of 1,755 listings starting at $1,500
Used Chevrolet Impala
510 Great Deals out of 33,660 listings starting at $950
Used Ford F-150
2,264 Great Deals out of 181,810 listings starting at $1,000
Used Ford Mustang
683 Great Deals out of 38,345 listings starting at $895
Used Honda Accord
1,063 Great Deals out of 60,939 listings starting at $999
Used Chevrolet Tahoe
661 Great Deals out of 39,350 listings starting at $1,000
Used Ford Taurus
253 Great Deals out of 16,501 listings starting at $1,850
Used Cadillac DeVille
4 Great Deals out of 1,634 listings starting at $1,995
Used Lincoln Continental
17 Great Deals out of 4,321 listings starting at $35,999

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
25 listings starting at $5,450
2010 Mercury Grand Marquis For Sale
3 Great Deals out of 90 listings starting at $3,490
2009 Mercury Grand Marquis For Sale
4 Great Deals out of 83 listings starting at $2,899
2008 Mercury Grand Marquis For Sale
9 Great Deals out of 160 listings starting at $2,995
2007 Mercury Grand Marquis For Sale
8 Great Deals out of 111 listings starting at $1,995

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.