Mercury Grand Marquis owners have reported 5 problems related to differential unit (under the power train category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Grand Marquis based on all problems reported for the Grand Marquis.
Paint peeling whine from real differential.
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all problems of the 2003 Mercury Grand Marquis
🔎.
Rear axle bearing failure on 2003 Mercury Grand Marquis. Pe4010. The axles are improperly heat treated and fail due to normal loads. This car is not a police vehicle. There is a clear defect in the axles of all similar body styles.
Abnormal whining noise from differential at 50-65 mph.
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all problems of the 1998 Mercury Grand Marquis
🔎.
Rear end differential failure due to mismatched ring and pinion gear. Mjs.
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all problems of the 1996 Mercury Grand Marquis
🔎.
Rear differential/ring& pinion failed 3 times.
| Problem Category | Number of Problems |
|---|---|
| Automatic Transmission problems | |
| Power Train problems | |
| Automatic Transmission Control Module problems | |
| Differential Unit problems | |
| Driveshaft problems | |
| Automatic Transmission Torque Converter problems | |
| Transmission Failure problems | |
| Vehicle Shudder problems | |
| Transmission Shudder problems | |
| Transmission Slip Out Of Gear problems |