99 Mercury Grand Marquis LS cooling fan isn't working

Asked by Jul 23, 2017 at 09:08 PM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

One night I started my 99 Mercury Grand Marquis
and the idle was very high and wouldn't kick down.
I drove home a few blocks and forgot until the next
day when it didn't the same thing. The third day I
was driving to the gas station less than a mile and
when I got there water was spewing from the
radiator. I have noticed that the fan never comes
on, but now the battery is dead too. Would all of
those things be caused by the fan not working?
That's a very high idle, overheating, and now a dead
battery.

3 Answers

1,515

Could be your serpentine (fan) belt. It drives the alternator and water pump. The fan could be the fan relay, or the fan motor itself. Replace the relay first. Or the fan thermostat. Check that belt! The idle could be the Idle Air Control Valve. May need cleaning or replacing.

1 of 1 people found this helpful.

So the belt would have to be broken or? My friend was looking under the hood right after the first time it overheated and he said somethng about the pully going weeble wobble instead of steady.

1,515

Your belt tentioner could be bad, and maybe the belt slipped orr. You had better replace the belt and tentioner before driving it even a mile. It's not a very hard job, one needs a 1/2 drive socket handle to release the pressure, and the new belt has to be threaded as per the diagram under the hood. It also has to be seated correctly on each pulley. A more remote possibility, is that a pulley on the water pump, or power steering pump has come loose.

1 of 1 people found this helpful.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,597 nationwide Grand Marquis listings starting at $1,000.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,880
  • #2
    kbro
    Reputation
    2,180
  • #3
    Js08016
    Reputation
    1,940
View All

Related Models For Sale

Used Lincoln Town Car
20 Great Deals out of 1,623 listings starting at $2,450
Used Ford Crown Victoria
5 Great Deals out of 939 listings starting at $1,496
Used Chevrolet Impala
551 Great Deals out of 33,419 listings starting at $1,499
Used Ford F-150
3,370 Great Deals out of 226,797 listings starting at $1,250
Used Ford Mustang
460 Great Deals out of 42,892 listings starting at $1,488
Used Chevrolet Tahoe
934 Great Deals out of 39,821 listings starting at $2,000
Used Honda Accord
909 Great Deals out of 79,343 listings starting at $1,295
Used Chevrolet Silverado 1500
3,077 Great Deals out of 163,278 listings starting at $1,500
Used Cadillac DeVille
1,441 listings starting at $2,695
Used Toyota Camry
1,137 Great Deals out of 77,515 listings starting at $1,400

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
13 listings starting at $5,835
2010 Mercury Grand Marquis For Sale
3 Great Deals out of 82 listings starting at $3,990
2009 Mercury Grand Marquis For Sale
5 Great Deals out of 80 listings starting at $3,999
2008 Mercury Grand Marquis For Sale
6 Great Deals out of 144 listings starting at $1,000
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 124 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.