2003 Mercury Grand Marquis engine and engine cooling problems
13 owner complaints filed with NHTSA name the engine and engine cooling on the 2003 Mercury Grand Marquis — 4% of all complaints for this model year.
What owners report
“The plastic intake manifold of my 2003 mercury 4.6l v-8 came apart and let the coolant leak out onto the engine.this car was built in canada in mid-2002 the problem is rampant in many years of the ford co cars. And in 2001 a class action suit was filed, in which ford was directed to pay damages to…”
filed Feb 5, 2010
“Tl*the contact owns a 2003 mercury grand marquis. While driving 10 mph, the engine began to rev and the brakes failed. The contact stated that it sounded as if the transmission snapped. The dealer stated that nothing was wrong with the vehicle, however recalls were issued for that model of vehicle…”
filed Jun 25, 2007
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Some 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% |
| 2004 Grand Marquis | 10 | 3% |
| 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 2003 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.