| 1 | 0 | 3 | 4 | 3 | 4 |
2004 Mercury Grand Marquis repairs by problem area
Engine (23%)
Transmission and Drivetrain (6%)
Brakes and Traction Control (6%)
Suspension and Steering (21%)
Electrical and Air Conditioning (40%)
Paint, Rust, Leaks, Rattles, and Trim (2%)
Other (0%)
Chart based on 47 repairs.
2004 Mercury Grand Marquis repair cost distribution
$2500+ (5%)
$1000 - $2499 (9%)
$500 - $999 (19%)
$100 - $499 (44%)
< $100 (23%)
Chart based on 43 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2004 Mercury Grand Marquis 4dr Sedan
239-horsepower 4.6L V8 4-speed automatic RWD
| Mercury Grand Marquis in Arizona, United States May 2012 - Feb 2013 | |||
| Jun 201234000 miUS $250 | The AC fan switch quit working so I had no AC till it was repaired | ||
| Feb 201337000 miUS $1032 | fuel pump replaced | ||
| Mercury Grand Marquis in New York, United States Nov 2010 - Nov 2018 | |||
| Aug 201280000 miUS $800 | The infamous lighting module. | ||
| Nov 201283300 miUS $400 | Fuel pump went. | ||
| Sep 2014104000 miUS $268 | Had both rear shocks replaced. | ||
| Sep 2016118000 miUS $255 | Replaced starter. | ||
| Aug 2017123000 miUS $500 | Replaced front drivers side wheel bearing assembly and front shocks. | ||
| Jun 2018128000 miUS $600 | Pump for air suspension system died. Had coil kit installed. | ||
| Mercury Grand Marquis in Florida, United States Jul 2015 - Sep 2018 | |||
| Aug 201533000 miUS $740 | Fuse kept blowing. Needed compressor. | ||
| Aug 201636600 miUS $215 | Driver's side electric window regulator was replaced. | ||
| Feb 201739000 miUS $220 | Power steering pressure switch broken and leaking, needed replacement. | ||
| May 201743000 mi | A/C blowing hot air (sometimes) but more yes than no. Compressor, evaporator, and condenser were all working well. After a closer look, they found a plug connected to the compressor had popped out and kept popping out. They tightened the connection, cleaner another part that was gunky and sent me on my way with NO CHARGE...but as usual I did nicely tip the mechanic. They had the car about an hour and a half. A/C cold as ever since! There are honest mechanics, in fact this is a franchise called Honest 1 Mechanic in Davie FL. I go no where else with my car. | ||
| Apr 201849700 miUS $430 | Brakes were sliding in reverse when I ent easy on them like backing out of a parking spot and car wouldn't stop. Had to throw trans into drive to stop it an move forward. Took it to my mechanic and he told me it was the ABS Control Module and it was a very very expensive part that I should think twice about replacing and maybe get rid of the car. I asked about getting a used one and he said there is no guarantee the used one would work but if I wanted to take a shot he would put it in. I did. And for $61 which included shipping a bought a used one and received it in 2 days. Mechanic put it in and at the same time thought it a good idea to change the master cylinder and flush the system. The results are that the car brakes better than it was new! Labor to take out the old one and put in the used one (lucky there was no programming problem) was a couple of 100 and so was the master so with all it came to $430. I was lucky to find a reputable used parts dealer that I would be more than happy to share with the community. A & B Auto LLC someplace in Louisiana, found them on eBay as abmotorsla. | ||
| Mercury Grand Marquis in Washington, United States Dec 2014 - Feb 2018 | |||
| Dec 201492000 miUS $900 | replaced engine control module | ||
| Feb 201592900 miUS $800 | Air conditioner compressor replaced | ||
| Aug 201596400 miUS $2300 | transmission failure - had a rebuilt tranny installed | ||
| Nov 2015100600 mi | power window stopped working cruise control stopped working | ||
| Mar 2016107000 miUS $222 | ball joint replaced | ||
| May 2016109000 miUS $244 | replaced power steering pump | ||
| Sep 2016114000 miUS $1900 | could not re-fuel car easily as all attempts resulted in fuel pump shutting off every 5 seconds. needed new fuel tank and wiring harness. waited for shop to locate parts. | ||
| Dec 2016115000 miUS $472 | AC was cycling on at random and causing hard starting and long cranking and idle and engine surges. Replaced A/C switch. needed new heater core. Heat only gave fumes. | ||
| Mar 2017117000 miUS $550 | Steering became "loose" and vague with some vibration with some clunking noise. Upon inspection, the ball joints needed replacing. trunk leaking with a few inches of water in bottom | ||
| Aug 2017122000 miUS $2900 | shifting became erratic and the engine would rev-up to around 1500- 1800 rpm then it would slam into 1st gear. I think they just replaced some solenoids and some burnt bands, then refilled with fresh fluid. | ||
| Dec 2017125000 miUS $1244 | replaced fuel pump and accelerator return valve | ||
| Feb 2018128000 miUS $100 | Car had loud knock, was a blown rod . we donated the car no longer own | ||
| Mercury Grand Marquis in New Mexico, United States - Mar 2007 | |||
| Mar 200721000 mi | fix seat heater; driver | ||
| Mercury Grand Marquis in Illinois, United States Jun 2010 - Mar 2012 | |||
| Jun 201158000 miUS $40 | Headlights failed while driving. Problem traced to defective Lighting Control Module. I replaced the defective relays inside the module and returned it to service. | ||
| Aug 201160000 miUS $150 | Air Conditioner required a recharge. | ||
| Mercury Grand Marquis in Ohio, United States Nov 2010 - May 2012 | |||
| Jun 201182000 miUS $100 | Rear air suspension malfunctioned. Rear of car was sagging tremendously. Replaced rear air springs with conventional coil springs. | ||
2004 Mercury Grand Marquis 4dr Sedan
224-horsepower 4.6L V8 4-speed automatic RWD
| Mercury Grand Marquis in Georgia, United States Jan 2017 - Jan 2018 | |||
| Aug 2017175000 mi | Bad wheel speed sensor left front. Did not replace A/C compressor locked up. Replaced a/C compressor, accumulator drier, orfice and all seals. Code for bad wheel speed sensor left front. Did not replace. | ||
| Mercury Grand Marquis in Massachusetts, United States Apr 2016 - Mar 2017 | |||
| Jun 2016131000 miUS $477 | Cracked intake manifold | ||
| Mar 2017136000 miUS $20 | Engine code P0443. Mechanic replaced gas cap as first step, light persisted. | ||
| Mercury Grand Marquis in Texas, United States May 2013 - Sep 2014 | |||
| Jun 2013205000 miUS $372 | car would steer erratically when on rough roads. rear suspension arms on both sides, upper and lower were wore out. replaced them in a few min. car steers great now. rear tires were moving forward and or backward depending on the gear.D-R engine began missing. OBD-II said #5 missing at start up.nd first 1000 RPM. replaced coil packs and injectors.plastic intake replaced.fuel filter replaced. water pump as well. still missed and shuddered while driving. worse in OVER DRIVE. | ||
| Sep 2014261000 mi | Transmission locked up at high speed and coused the engine to throw a rod through the block. | ||
| Mercury Grand Marquis in Florida, United States Jun 2011 - Oct 2012 | |||
| Sep 201125000 miUS $76 | Vapor Canister Valve | ||
| Mercury Grand Marquis in Alberta, Canada Aug 2011 - Sep 2012 | |||
| Mar 201255180 miC $75 | Corroded battery cable replaced | ||
| Mercury Grand Marquis in Kansas, United States Jun 2013 - Apr 2014 | |||
| Aug 2013138600 mi | Malfunction in A/C control. Researched it and found out how to repair it myself. Saved about $650. | ||
| Mercury Grand Marquis in Florida, United States Jul 2014 - Jan 2022 | |||
| May 201536700 miUS $350 | Leaking rear shock absorber. Replaced both rear shocks. | ||
| Oct 201651300 miUS $150 | Volt meter started fluctuating. Went to car parts store, had battery and alternator tested. Battery had a bad cell. Replaced battery. | ||
| May 202170000 miUS $400 | Heater temperature control -- vacuum-powered blend door actuator was replaced. | ||
See TrueDelta's information for all Sedans
See TrueDelta's information for all Mercury models.
