2003 Mercury Grand Marquis engine complaints

Filed Aug 6, 2004 · Engine · 10,000 miles · OH

Engine made a loud knocking sound. Vehicle was taken to the dealer several times since purchase. Dealer stated that there was no sound, nothing was done. Another outside mechanic told him it sounded like a bearing. Dealer stated that the right cylinder had to be replaced, and the vehicle was still at dealer.

Filed Apr 14, 2004 · Engine · 500 miles · FL

While driving at 45 MPH vehicle stalled. Also, early in the morning it was hard to start vehicle. Vehicle was checked by the dealer, who couldn't find the cause of the problem.

Filed Mar 31, 2004 · Engine · 26,890 miles · AL

2003 mercury grand marques stalls at or near idle speed. Has stalled when backing up, when starting forward from stop at traffic light. Have had it into the dealer, ray pearman lincoln mercury 4 time for a total of 9 days. They have been unable to fix problem as of yet. The dealer confirmed that there was a stalling problem. They have replaced the idle air control valve and the mass air flow sensor. Each time they thought they had it fixed and had me take the car, it has stalled again. One time it stalled as I was backing out of the dealer service department. It is currently at the dealer and they are trying to find the problem.

Filed Jan 11, 2004 · Engine · MD

While waiting in line for gas with foot on brake, engine started to race. Engine continued to race when car was put in neutral and then park. Turned engine off and restarted, racing did not reoccur after restarting.

Filed Aug 7, 2003 · Acceleration, Engine · DE · crash · 5 injuries

After starting and shifting into drive the engine raced and there was unexpected acceleration and the car would not stop even while applying brake. Turned vehicle off after crash and the engine continued to sound like it was running.

Filed Jun 2, 2003 · Engine · WI

Stainless steel exhaust was rusted. *mr the vehicle had a stainless steel exhaust. After the return from florida where they stayed for winter, the exhaust system was found rusted. *scc

Filed Apr 24, 2003 · Engine, Suspension · 39 miles · TX

There was a severe vibration in the engine, when the vehicle idled. *jb there was a general chassis vibration at speeds of 38 which was attributed to out of rounds tires.

Filed Feb 28, 2003 · Engine · 39 miles · TX

Nar 02/28/2003 mr consumer experinced problems with engine since delivery of the vehicle.