1999 Mercury Grand Marquis engine and engine cooling problems
26 owner complaints filed with NHTSA name the engine and engine cooling on the 1999 Mercury Grand Marquis — 16% of all complaints for this model year.
What owners report
“The contact owns a 1999 Mercury Grand Marquis. The contact stated that the vehicle had a leaking intake manifold. The vehicle was taken to an independent mechanic and diagnosed that the intake manifold needed to be replaced. The vehicle was not repaired. The dealer and manufacturer were made aware…”
filed Jan 25, 2022
“My car was in drive at a business traffic intersection drive way on a slight hill with the brakes on when the engine surged and the car started to reverse while still in drive. I had to put considerable pressure on the brakes to stop it. I checked and the shift lever was still in drive. My car has…”
filed Dec 12, 2014
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, 2007Extended coverage program 05n04 - extended coverage for composite intake manifold. This program is being provided as a settlement to a class action lawsuit. The terms of the settlement extend the coverage of the…
05N04 · Service Bulletin/Repair Instructions · issued Dec 14, 2005Wds cop kit diagnostic tip - coil on plug (cop) ignition systems - engine misfire or rough running. *tt
041601 · Service Bulletin/Repair Instructions · issued Nov 14, 2005Engine misfire or running - coil on plug (cop) ignition systems - wds cop kit diagnostic tips. To include various 2005 models. * ar this article 04161 supersedes tsb 03-14-04.
031404 · Service Bulletin/Repair Instructions · issued Aug 23, 2004
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% |
| 2003 Grand Marquis | 13 | 4% |
| 2002 Grand Marquis | 10 | 13% |
| 2001 Grand Marquis | 20 | 13% |
| 2000 Grand Marquis | 17 | 10% |
| 1998 Grand Marquis | 26 | 18% |
| 1997 Grand Marquis | 124 | 39% |
Other reported problem areas on the 1999 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.