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 of 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 of 1 people found this helpful.
1,235

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.

46,195

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

46,195

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

Add photo

Related Questions

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,804 nationwide Grand Marquis listings starting at $2,250.

ZIP:

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,450
#2 kbro
kbro
Reputation 2,060
#3 Js08016
Js08016
Reputation 1,740
View All

Related Models For Sale

Used Ford Crown Victoria
11 Great Deals out of 1,069 listings starting at $2,995
Used Lincoln Town Car
33 Great Deals out of 1,820 listings starting at $1,750
Used Chevrolet Impala
520 Great Deals out of 31,726 listings starting at $1,450
Used Mercury Marauder
25 listings starting at $7,300
Used Ford Mustang
474 Great Deals out of 45,735 listings starting at $1,999
Used Ford Taurus
249 Great Deals out of 20,434 listings starting at $699
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used Chrysler 300
409 Great Deals out of 19,932 listings starting at $1,000
Used Cadillac DeVille
7 Great Deals out of 1,640 listings starting at $1,999
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Ford Explorer
944 Great Deals out of 72,519 listings starting at $1,000
Used Honda Accord
812 Great Deals out of 84,287 listings starting at $1,050

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
35 listings starting at $4,995
2010 Mercury Grand Marquis For Sale
5 Great Deals out of 90 listings starting at $2,799
2009 Mercury Grand Marquis For Sale
8 Great Deals out of 94 listings starting at $3,790
2008 Mercury Grand Marquis For Sale
11 Great Deals out of 144 listings starting at $2,250
2007 Mercury Grand Marquis For Sale
3 Great Deals out of 140 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.