1999 Mercury Mountaineer Engine cooling Problems
- Complaints
- 12about this part
- Share
- 8%of 151 total for the year
- Median mileage
- 53,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the engine cooling of the 1999 Mercury Mountaineer, 8% of the 151 complaints for this model year. Where a mileage was given, the median is 53,000 miles. 2 a fire, according to the filers.
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.
“Took the truck back to the dealer for the four time 9/2903 for the check engine light came on again and the same code keeps coming up and it is getting old not to have the truck that we are still paying for monthly.annd I have all the work orders for what they did”
NHTSA complaint #10069447, filed 2004-01, 34,000 miles“With only 61000 miles and at the 60000 mile check up I was informed that the timing guides are disintegrating. I was also informed that the repair would cost over $900.00. I have searched for any recalls on this problem to no avail. The vehicle has been serviced faithfully at the dealers service center. At 49500 miles the vehicle was taken in to have a normal oil change and I asked to have a 50000 mile check up. I was told that they didn't offer a checkup at that mileage. …”
NHTSA complaint #736779, filed 2000-11“The contact owns a 1999 Mercury Mountaineer. The contact stated that the vehicle was parked and idle when it caught in fire from the engine area and spread to the instrument panel. The instrumental panel and the engine components were completely melted. The fire department was called and advised that the fire originated at the engine. A fire report was filed. The VIN was not available. The vehicle was destroyed. The failure and the current mileage was 160,000.”
NHTSA complaint #10399883, filed 2011-05, 160,000 miles“Driver was traveling on the highway and without warning the vehicle stalled. Driver was unable to restart vehicle. Had vehicle towed to the dealer. Mechanic determined that the oil pump needed to be replaced.”
NHTSA complaint #10109204, filed 2005-01“1999 Mercury Mountaineer developed problems with the windshield wipers, tires, driver's side mirror, linkage on the transmission, check engine light and the airbag light.”
NHTSA complaint #10137734, filed 2005-09Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2008 | 3 | 3% |
| 2007 | 4 | 5% |
| 2006 | 43 | 37% |
| 2005 | 5 | 6% |
| 2004 | 11 | 5% |
| 2003 | 10 | 7% |
| 2002 | 33 | 9% |
| 2001 | 1 | 5% |
| 2000 | 5 | 4% |
| 1999 | 12 | 8% |
| 1998 | 20 | 8% |
| 1997 | 14 | 4% |
Other parts of the 1999 Mercury Mountaineer
51 complaintsVisibility (wipers, defrost, mirrors)
22 complaintsAir bags
14 complaintsVehicle speed control
11 complaintsElectrical system
10 complaintsBrakes
9 complaintsTransmission and drivetrain
8 complaintsEquipment
6 complaintsSeats
4 complaintsSteering
4 complaintsBody and structure
4 complaintsSuspension
4 complaints
← All problems reported for the 1999 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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