2003 Mercury Grand Marquis: engine stalls while driving

Filed Oct 23, 2017 · Lights · 100,000 miles · MI

Head lights and tail lights will turn off while driving

Filed Aug 4, 2016 · Electrical · 140,501 miles · NY

Car stalls when you go over a bump in the road while driving at 30 MPH on a 30 MPH road

Filed Oct 10, 2014 · Acceleration, Brakes · 130,000 miles · NC

Tl* the contact owns a 2003 mercury grand marquis. The contact stated that while driving 20 MPH, the brake pedal was depressed and the engine rpms increased approximately to 4000. The contact stated excessive force was applied to the brake pedal and the vehicle jerked. The brake pedal was aggressively depressed until the brakes responded and the vehicle was able to come to a stop. The vehicle was taken to the dealer where the failure was unable to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 130,000. The consumer stated when he applied the brakes, the vehicle slowed down. However, the engine speed increased to 4,000 RPM's/ with the brake fully depressed, the vehicle continued with a series of lunges at a high speed. Only by releasing the brake pedal and slamming on the brake, did the vehicle stop about three quarters across the intersection with the engine at a normal idle speed. No warning lights displayed on the dashboard. The vehicle had a history of almost stalling while coming to a stop. The dealer did not find any codes. Updated 12/04/14

Filed Apr 21, 2014 · Lights · 93,000 miles · MO

Headlamps turned off while driving down dark highway at night!!! Only able to make high beam lamps work by pulling turn signal lever back and holding in that position. Low beam and high beam do not work, only high beam when manually held on. Should be recalled!!! Very dangerous!!!

Filed Dec 19, 2011 · Lights · 84,700 miles · MD

The head lights will turn off while driving. They will then go back on after an indeterminate period of time. It makes no difference whether the light control switch on the dash is on automatic or not. This may happen any number of times even during a short trip. The problem is the lighting control module for which ford has a newly designed part, but no recall or service bulletin. Needless to say it is an obvious safety issue to have your lights go out and lose all forward visibility, especially on a rainy night. I don't understand why there has not been a recall on such an obvious safety hazard.

Filed Sep 4, 2011 · Lights · 43,000 miles · IL

Headlights randomly turn off while driving. Lighting control module is defective.

Filed Jul 6, 2010 · Electrical · 63,073 miles · FL · fire

Tl*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.

Filed Jan 22, 2010 · Lights · 124,909 miles · TX

Tl*the contact owns a 2003 mercury grand marquis. The contact stated that the headlights shut off while driving approximately 35 MPH. The length of time that the lights remain off varies. The parking lights stay on and the signal lights work; however, the headlights remain off. The current mileage was 124,909. Updated 03/01/10. *lj updated 05/13/10.

Filed Apr 16, 2008 · Fuel system · 39,527 miles · CA

My wife was driving down a heavily traveled major thoroughfare in the san fernando valley, when her 2003 mercury grand marquis stalled. The electric fuel pump had failed. As the vehicle died, she lost the power steering on this 4,000 pound vehicle. Unfortunately, she had her two elderly disabled parents with her. The vehicle only had 39, 527 miles on it. Luckily no one got hurt.

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 Aug 25, 2003 · Electrical · NY

Vehicle stalled at any speed, stalled 25 times. Vehicle has been examined by dealer 4 times. Dealer could not duplicate the problem. Vehicle had been at dealer a total of 36 days. Primary computer was reset, then replaced by dealer. This did not remedy the problem.