2008 Mercury Grand Marquis Engine cooling Problems
- Complaints
- 5about this part
- Share
- 6%of 80 total for the year
- Median mileage
- 19,800miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine cooling of the 2008 Mercury Grand Marquis, 6% of the 80 complaints for this model year. Where a mileage was given, the median is 19,800 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Unexpected acceleration of 2008 Mercury Grand Marquis, while my foot was on the brake, slowing the vehicle. This happened twice in the past 3 days. Second incident occurred oct. 31, 2008. Each incident nearly caused my vehicle to strike another vehicle.”
NHTSA complaint #10247409, filed 2008-11, 19,800 miles“On october 27, 2010, my wife was driving with me in the car and she started to brake for a red light. She was going about 30 miles per hour. As soon as she applied the brake, the engine accelerated and she had to use a large amount of braking pressure to stop the car. As soon as the car stopped, she took her foot off the brake and the engine returned to idle. Yesterday, I was driving the car at approximately 55 mile per hour and started to move into the passing lane when the traffic light ahead turned red. I applied the brake and the same thing happened. …”
NHTSA complaint #10364207, filed 2010-11, 52,500 miles“Just bought the 2008 Grand Marquis, first day, radio did not work, (still does not work properly). Took the car in for oil change 2500 miles, also asked them to check out a noise the car was making. I was just informed yesterday I need a new engine. They the dealer said it was something to do with the timing chain at first the replaced that part and still had the noise. I will never own a ford product, and they wonder why they are losing market share!!! By the way, this is my 9th Grand Marquis, I just traded an 2005 to get rid of it, it too had a noise they could not fix. …”
NHTSA complaint #10208185, filed 2007-11, 2,500 miles“The first time I changed the oil in my 2008 Mercury Grand Marquis when I started the engine there was a loud mechanical noise for a few seconds. I took it to the dealer and told him to change the oil and listen for the noise which they heard and was told all 2008 Grand Marquis do this .also I notice the engine is noisy in the morning when I start it. I think ford has a problem with these engines if they all do it.”
NHTSA complaint #10208663, filed 2007-11“My Grand Marquis ls 2008 paint have cracked and falling off the hood, top, and back. It is rusted on top were the paint have peel off and now its starting on the hood. Took back to dealer and was told that the paint on car was not cover. It start peeling two month after we got the car didn't have them many miles. So what can be done about my car peeling paint. Every time you wash the car more paint coming off. After that the engine cooling system went out and they told me they are responsible.”
NHTSA complaint #10343948, filed 2010-07Related service bulletins
- 10109070Sep 21, 2016The 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…
- 10032224Oct 1, 2007Ford: engine cooling fan control relay part availability.
- 10023943Oct 1, 2007Some 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…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 1 | 4% |
| 2008 | 5 | 6% |
| 2007 | 3 | 3% |
| 2006 | 2 | 1% |
| 2005 | 9 | 2% |
| 2004 | 10 | 3% |
| 2003 | 13 | 4% |
| 2002 | 10 | 13% |
| 2001 | 20 | 13% |
| 2000 | 17 | 10% |
| 1999 | 26 | 16% |
| 1998 | 26 | 18% |
| 1997 | 124 | 39% |
| 1996 | 85 | 36% |
| 1995 | 8 | 4% |
| 1994 | 15 | 10% |
| 1993 | 7 | 5% |
| 1992 | 19 | 7% |
| 1991 | 10 | 12% |
| 1990 | 3 | 5% |
| 1989 | 6 | 10% |
| 1988 | 7 | 10% |
| 1987 | 5 | 12% |
| 1986 | 4 | 19% |
| 1985 | 3 | 14% |
| 1984 | 5 | 33% |
Other parts of the 2008 Mercury Grand Marquis
23 complaintsVehicle speed control
15 complaintsBrakes
10 complaintsElectrical system
9 complaintsBody and structure
9 complaintsExterior lighting
5 complaintsEngine
4 complaintsFuel system
4 complaintsAir bags
3 complaintsEquipment
3 complaintsOther or unknown
3 complaintsSeat belts
3 complaints
← All problems reported for the 2008 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology