Alternator/generator/regulator Problems of Mercury Grand Marquis

Vehicle was being driven on a maryland secondary road and the entire lighting system failed. The car continued to operate but with no headlights, running lights or interior lights. Basically it forced us to find a quick safe pull off using a flashlight for vision. Tomorrow the car is receiving a complete diagnostic check to determine the fault. It seems the lighting controls seem to be a problem as the battery and alternator checked out fine. This is a major life safety finding and needs to be addressed by Ford now with the number of these vehicles on the road.

See all problems of the 2000 Mercury Grand Marquis 🔎.

1999 Mercury Grand Marquis. Consumer writes in regards to defective alternator. The consumer stated on may 29, 2012, he purchased a re-built alternator from a local parts store and installed it himself. The alternator failed on July 16, 2012, while in a parking lot. The consumer stated the started solenoid clicked, but the engine would not turn over. After getting a jump, the vehicle would run for about 30 seconds after the cable was disconnected. The consumer returned the alternator to the parts store to have it tested, in which it did fail. The consumer purchased another alternator and once it was installed, the vehicle ran for only 30 seconds after the jumper cables were disconnected, as the previous alternator. The consumer then purchased a voltage meter and the alternator was putting out 11 volts, instead of 14 volts, which was normal.

See all problems of the 1999 Mercury Grand Marquis 🔎.

The contact owns a 2003 Mercury Grand Marquis. The contact was driving approximately 30 mph when the vehicle stalled without warning. There was a strong burning odor inside of the vehicle. The contact inspected underneath the hood and flames excessively ignited from the engine compartment. There were two bystanders who extinguished the fire with bottles of water. There were no injuries. The fire department arrived and a report was filed with no personal injuries. The vehicle was towed to an authorized dealer and the technician stated that the failure was contributed to the alternator. The battery, alternator and electrical system were replaced. The failure mileage was 63,073.

See all problems of the 2003 Mercury Grand Marquis 🔎.

The car started normal at work and drove 20 minutes to home. Placed car in park, and attempted to turn ignition to off, but the key switch rotated freely with no resistance. The key switch was tried again to turn off ignition by turning in either direction fully with no affect. Key was removed, switch rotated freely. Steering could not be locked. Then attempted to stop engine by another method. Lifted hood and disconnected battery - alternator keep it running. Owner manual showed ignition fuse which was pulled to stop motor. Switch was still in on position when battery was reconnected. The car could not be restarted by key switch. Battery disconnected to disable airbag until repairs could be accomplished. Repairs: I did this myself. The steering column had to come completely off. I determined it would take 5 to 6 hours of work to identify problem and fix. A dealer would have charge for this. After steering column was removed the switch mechanism was examined for problem. This was a tilt type column. A plastic shaft extended from the key switch across the tilt area to a plastic switch actuator in the main column shaft. A thin 1 inch long steel bearing type pin was found stuck to some grease. The column was taken apart and it was determined the pin fit into a hole in the switch actuator. This pin was forced back into the hole, super glued, and steering column was reassembled and placed back in the car. Loose shifter bolt tightened. Ignition switch was checked. Slider had resistance to being moved and showed some contact burns. The ignition switch was replaced. Steering column with fixed switch actuator was installed. Car started normal with no resistance to ignition. Turns on and off normal. Consequence of ignition actuator link failure is high danger with a stuck accelerator or parking in a confined space (garage). Engine can not be turned off in dangerous these situations or an auto accident. Switch actuator is poor designed with parts that fall out.

See all problems of the 1996 Mercury Grand Marquis 🔎.

I have had all of my electrical components fixed, the alternator,the regulator,all the pig-tails,and a new battery. I am still having a problem with the battery light coming on. I have paid out alot of money to fix the problem. I am a tow truck driver and I tow alot of vehicles of this make and model for the same reason.

See all problems of the 1998 Mercury Grand Marquis 🔎.

2003 Grand Marquis developed problems with the alternator, the throttle sticking open and alignment problems. There was also a rattle noise coming from the engine and the digital readout on the dash was not reading properly.