Table 1 shows nine common power train related problems of the 2003 Mercury Grand Marquis. The number one most common problem is related to the automatic transmission (three problems). The second most common problem is related to the axle shaft (two problems).
Automatic transmission shifts erratically when in cruise mode, less than 70,000 miles on vehicle, has almost caused accident several times. Have to dis-engage cruise control and shut off overdrive to cure it, and keeps occurring although less frequently. Read details...
Premature failure of rear axle shaft bearing. Original NHTSA recall # 04v328000 in July of 2004. My car was not in the original recall, but I have just had this very problem with my car. If I hadn't taken the car in, I could have had a major safety problem if the bearing had gone out totally. Read details...
Paint peeling whine from real differential Read details...