2004 Mercury Mountaineer Fuel system Problems
- Complaints
- 2about this part
- Share
- 1%of 210 total for the year
- Median mileage
- 78,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2004 Mercury Mountaineer, 1% of the 210 complaints for this model year. Where a mileage was given, the median is 78,500 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.
“This vehicle idles very low and stalls at various speeds. No warning is given engine just shuts down. Spark plugs have blown totally out from the engine several times.”
NHTSA complaint #10820147, filed 2016-01, 142,000 miles“Dt:the consumer stated during braking the vehicle stalls. When the cvonsumer went to restart and put it in drive it stalled again. Took vehicle to the service department 3 times. The second time they replaced the fuel pump, the first time they updated the engine controller software. For the 4th time total loss of vehicle power when braking from 55 MPH. Dealer replaced maf sensor. Driver rear door molding catching front door molding at times when opening.”
NHTSA complaint #10127124, filed 2005-08, 15,000 milesRelated service bulletins
- 10021052Feb 27, 2007Mil on with dtc p0463 or erratic fuel gauge operation.
- 10019379Jan 1, 2006Malfunction indicator lamp on with pcm diagnostic trouble code p0463 and/or ic diagnostic trouble code b1201 - fuel gauge drops to empty or slow to update after refueling.
- 10013388Oct 31, 2005Fuel gauge slow to update after refueling.
- 10017860Jul 1, 2005Malfunction indicator lamp coming on with diagnostic trouble codes (dtcs) p0171, p0172, p0174 and/or p0175 (fuel system too rich or lean).
- 10011332Sep 1, 2004Fuel gauge slow to update.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 2 | 15% |
| 2008 | 3 | 3% |
| 2007 | 1 | 1% |
| 2006 | 5 | 4% |
| 2005 | 3 | 4% |
| 2004 | 2 | 1% |
| 2003 | 7 | 5% |
| 2002 | 8 | 2% |
| 2000 | 3 | 2% |
| 1999 | 2 | 1% |
| 1998 | 5 | 2% |
| 1997 | 6 | 2% |
Other parts of the 2004 Mercury Mountaineer
79 complaintsTransmission and drivetrain
64 complaintsVehicle speed control
21 complaintsElectrical system
16 complaintsAir bags
12 complaintsEngine cooling
11 complaintsOther or unknown
9 complaintsEngine
8 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsSuspension
6 complaintsBrakes
5 complaintsSteering
5 complaints
← All problems reported for the 2004 Mercury Mountaineer
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