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

1,735

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 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.

1,735

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 people found this helpful.

Your Answer:

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,269 nationwide Grand Marquis listings starting at $1,500.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    6,100
  • #2
    kbro
    Reputation
    2,260
  • #3
    Js08016
    Reputation
    2,180
View All

Related Models For Sale

Used Lincoln Town Car
27 Great Deals out of 1,420 listings starting at $1,750
Used Ford Crown Victoria
761 listings starting at $1,900
Used Chevrolet Impala
516 Great Deals out of 25,544 listings starting at $790
Used Ford Mustang
338 Great Deals out of 39,885 listings starting at $1,000
Used Ford F-150
2,235 Great Deals out of 189,904 listings starting at $1,200
Used Ford Taurus
260 Great Deals out of 16,136 listings starting at $986
Used Honda Accord
711 Great Deals out of 99,463 listings starting at $1,225
Used Toyota Camry
942 Great Deals out of 71,063 listings starting at $1,137
Used Chevrolet Silverado 1500
1,825 Great Deals out of 156,566 listings starting at $1,995
Used Chevrolet Tahoe
675 Great Deals out of 37,607 listings starting at $1,500

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
24 listings starting at $5,000
2010 Mercury Grand Marquis For Sale
67 listings starting at $3,995
2009 Mercury Grand Marquis For Sale
63 listings starting at $4,496
2008 Mercury Grand Marquis For Sale
3 Great Deals out of 106 listings starting at $1,500
2007 Mercury Grand Marquis For Sale
83 listings starting at $2,495

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.