One problem related to catalytic convertor has been reported for the 2003 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mercury Mountaineer based on all problems reported for the 2003 Mountaineer.
Dt contact states she was driving 60 mph when the vehicle stalled. The vehicle was towed to the dealer and the service mechanic said that the catalytic converter needed to be replaced. The catalytic converter was replaced last year.
| Engine And Engine Cooling problems | |
| Car Stall problems | |
| Engine Cooling System problems | |
| Cooling Fan problems | |
| Loud Engine Noise problems | |
| Catalytic Convertor problems |