2004 Mercury Grand Marquis engine and engine cooling problems
10 owner complaints filed with NHTSA name the engine and engine cooling on the 2004 Mercury Grand Marquis — 3% of all complaints for this model year.
What owners report
“The contact owns a 2004 Mercury Grand Marquis. The contact stated that she noticed a leak underneath her vehicle with the check engine and coolant warning lights illuminated. The contact had taken the vehicle to an independent mechanic where it was discovered that coolant had been leaking from a…”
filed Nov 29, 2021
“Tl* the contact owns a 2004 mercury grand marquis. While driving 30 mph, smoke emitted from the engine compartment of the vehicle. Upon inspection, the contact noticed that there was no coolant in the vehicle. The coolant was replenished and the vehicle was taken to an independent mechanic where it…”
filed Jun 28, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a…
SSM 46085 · Service Bulletin/Repair Instructions · issued Sep 21, 2016Some 1997-2008 vehicles equipped with a 4.6l 2v, 5.4l 2v, or 6.8l 2v engine--spark plug thread repair procedure--not covered under new vehicle limited warranty. *nj this includes f-53 motorhome chassis. Updated 2/23/10…
07212 · Service Bulletin/Repair Instructions · issued Oct 1, 2007Wds cop kit diagnostic tip - coil on plug (cop) ignition systems - engine misfire or rough running. *tt
041601 · Service Bulletin/Repair Instructions · issued Nov 14, 2005
Engine and Engine Cooling problems in other Grand Marquis years
| Year | Reports | Share |
|---|---|---|
| 2010 Grand Marquis | 1 | 4% |
| 2008 Grand Marquis | 5 | 6% |
| 2007 Grand Marquis | 3 | 3% |
| 2006 Grand Marquis | 2 | 1% |
| 2005 Grand Marquis | 9 | 2% |
| 2003 Grand Marquis | 13 | 4% |
| 2002 Grand Marquis | 10 | 13% |
| 2001 Grand Marquis | 20 | 13% |
| 2000 Grand Marquis | 17 | 10% |
| 1999 Grand Marquis | 26 | 16% |
| 1998 Grand Marquis | 26 | 18% |
| 1997 Grand Marquis | 124 | 39% |
Other reported problem areas on the 2004 Mercury Grand Marquis
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.