Sound under passenger seat on 2004 mercury gran marquis

10

Asked by Sep 02, 2015 at 06:47 PM about the 2004 Mercury Grand Marquis LS Ultimate

Question type: Maintenance & Repair

It rattles when in idle and gets quicker when i hit the gas, its a terrible clicking
sound under the passenger seat, i am trying to figure out what it could be?

5 Answers

10

Its not in the car its on the bottom

1 people found this helpful.

Outside the car, probably a heat shield for the cat rattling Or sometimes an exhaust manifold to muffler leak does really sound like a 'tick' you gotta get under it and look, grab things, wiggle shields, but do it cold. The cat gets way too hot to get near. Wiggle exhaust pipes, and muffler and cat. Nothing should move

1 people found this helpful.
1,615

Louder when you hit the gas? Then it's an exhaust leak. When cold, beat on the exhaust pipes(rubber hammer), converter and such to see if you hear any rattles. Sounds like a blown exhaust manifold gasket to me.

64,325

Most likely an exhaust leak, possibly at the passenger catalytic converter outlet. Could also be a rusted through pipe behind the converter.

64,325

Could also be a blown out spark plug. Raise the hood with the engine running and see if you can tell where the noise is coming from.

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,207 nationwide Grand Marquis listings starting at $1,200.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,990
  • #2
    kbro
    Reputation
    2,210
  • #3
    Js08016
    Reputation
    2,050
View All

Related Models For Sale

Used Lincoln Town Car
22 Great Deals out of 1,353 listings starting at $1,995
Used Ford Crown Victoria
5 Great Deals out of 698 listings starting at $1,700
Used Chevrolet Impala
386 Great Deals out of 25,622 listings starting at $900
Used Ford F-150
2,289 Great Deals out of 215,013 listings starting at $1,300
Used Mercury Marauder
29 listings
Used Chrysler 300
306 Great Deals out of 19,355 listings starting at $1,500
Used Chevrolet Tahoe
527 Great Deals out of 36,516 listings starting at $1,299
Used Ford Mustang
249 Great Deals out of 36,708 listings starting at $2,500
Used Ford Taurus
177 Great Deals out of 15,852 listings starting at $981
Used Cadillac DeVille
1,277 listings starting at $1,988
Used Chevrolet Silverado 1500
1,758 Great Deals out of 148,972 listings starting at $828
Used Toyota Camry
788 Great Deals out of 70,452 listings starting at $1,000

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
13 listings starting at $5,888
2010 Mercury Grand Marquis For Sale
4 Great Deals out of 75 listings starting at $3,500
2009 Mercury Grand Marquis For Sale
58 listings starting at $3,777
2008 Mercury Grand Marquis For Sale
3 Great Deals out of 100 listings starting at $2,850
2007 Mercury Grand Marquis For Sale
7 Great Deals out of 105 listings starting at $1,200

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.