2008 Mercury Mariner engine problems
14 owner complaints filed with NHTSA name the engine on the 2008 Mercury Mariner — 3% of all complaints for this model year.
What owners report
“The car is reving high and accelerating poorly. Then the red triangle light telling me to stop safety now comes on causing me to pull over and shut car off. I turn the car back on and it drives but with same issues. Look on the carcomplaint.com website for tsb-09-19-12 and tsb-08-24-5 which detail…”
filed Feb 20, 2020
“The throttle is held open when the cruise control is employed but remains open when the cruise control is turned off both by using the off button and brake application. This happens at 75-80 mph on interstate highways in az and ut. The power brake booster is ineffective with no intake vacuum. This…”
filed Jun 15, 2017
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, 2016Ford: there is excessive engine or exhaust noise, or an exhaust odor due to an exhaust leak. There will be no warning codes or lights. 2007-2008 escape/mariner. *rm
AS-21534 · Service Bulletin/Repair Instructions · issued Oct 1, 2010
Engine problems in other Mariner years
| Year | Reports | Share |
|---|---|---|
| 2011 Mariner | 11 | 13% |
| 2010 Mariner | 61 | 23% |
| 2009 Mariner | 53 | 17% |
| 2007 Mariner | 7 | 21% |
| 2006 Mariner | 8 | 13% |
| 2005 Mariner | 8 | 12% |
Other reported problem areas on the 2008 Mercury Mariner
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.