2003 Grand marquis squealing

Asked by Apr 30, 2016 at 11:57 PM about the 2003 Mercury Grand Marquis

Question type: Maintenance & Repair

I have a 2003 grand marquis. It is squealing when I
have the AC or heat is on. It doesn't squeal when
the air is off. It has a brand new belt on it. Is it my
compressor going bad?

3 Answers

92,825

Hard too say really, if the head pressures are too high it can cause the compressor to try and lock up and that would make the belt squeal. I would take it in and have it checked out, the high pressure side is nothing to fool around with, it can cause damage to both the vehicle and anyone close by if it blows.

46,335

Check the belt idler, tensioner and a/c compressor. I'll be it is one of those.

385

New belts or not the problem is usually the tension on the belts.

Your Answer

Add photo

Related Questions

  • I have a 2008 Mercury Grand Marquis. When I turn a/c fan on high I get a squealing sound. Possible cause? 1 answer

    2008 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • 1988 Mercury Grand Marquis 3 answers

    My car is squealing wit the heater on. What could be causing my issues? I am a single mother who doesn't have very much money for repairs, let alone for exploritory maintenance done. If I could di...

    1988 Mercury Grand Marquis

    -

    Maintenance & Repair

  • High pitched squeal under dash 1 answer

    My 99 Grand Marguis GS has just started emitting a high pitched variable tone squeal somewhere under the dash on the driver side. It only does it when the car is in gear. If I put it in neutral it s...

    1999 Mercury Grand Marquis 4 Dr GS Sedan

    -

    Maintenance & Repair

  • Regarding the idle control valve 2 answers

    Replaced 6 months ago and just replaced again and is now making the same noise as before it was replaced (high pitched squealing). What causes them to go out, or what else can be the proglem.

    2001 Mercury Grand Marquis

    -

    Maintenance & Repair

  • Squeal in 2003 Taurus ses 2 answers

    I have changed belt pulleys and water pump and my car is still squealing. Sounds like it's coming from water pump area

    2003 Ford Taurus SES

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 9 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,460
#2 kbro
kbro
Reputation 2,060
#3 Js08016
Js08016
Reputation 1,740
View All

Related Models For Sale

Used Lincoln Town Car
12 listings starting at $2,995
Used Chevrolet Impala
34 Great Deals out of 884 listings starting at $799
Used Ford Mustang
1,334 listings starting at $5,980
Used Ford Taurus
35 Great Deals out of 300 listings starting at $4,988
Used Ford F-150
296 Great Deals out of 8,121 listings starting at $2,499
Used Chevrolet Tahoe
531 listings starting at $4,995
Used Chevrolet Camaro
984 listings starting at $13,999
Used Chevrolet Silverado 1500
102 Great Deals out of 6,035 listings starting at $2,339

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.