Mercury Grand Marquis stalling problems

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 Nov 1, 2015 · Engine · 63,000 miles · MI

My 2006 mercury grand marquis ls premium car has an unresolved stalling issue. The problem is exacerbated when the car's engine warms up, especially during warmer weather. It tends to stall out at extended stoplights or if the vehicle needs to be stopped within a short distance. My car first began stalling after I had it washed in gasoline station's automatic car wash. Shortly after it was washed, the engine began running extremely rough and then finally stalled out with the 'engine' light on yellow light on the dashboard. The first two master mechanics of two different repair facilities suggested that the engine's PCM was bad and needed to be replaced at a ford dealership. I took my car to a third repair facility and the mechanic swapped out a used PCM for a 4.6 l application and reprogrammed it for ford's most recently issued software update. The car continues to stall after the used PCM was reprogrammed and the mechanic concluded that he was sure that the stalling problem is not related to the engine's PCM! I've paid approximately $874.00 among three different automobile repair facilities and all master mechanics among these three garages could not pinpoint why my vehicle is stalling. Finally, a master mechanic of a volunteer church garage also could not pinpoint why my car continues to stall and he suggests that the only fix is to sell my car. When I called a local ford dealership to see how they would try to fix it, the service manager explained that they would try to replicate the conditions that made it stall in the first place. I explained that this method was tried by all three repair facilities, all to no avail, and that I am not interested in paying additional fees for future diagnostic tests that cannot pinpoint the failure. To prevent stalling at stoplights, I need to use both the gas and brake pedals at stop lights!

Filed Sep 17, 2015 · Acceleration, Engine · 136,037 miles · FL

Tl* the contact owns a 2001 mercury grand marquis. The contact stated that while driving at approximately 70 MPH, the vehicle was jerking and the ABS and the check engine warning lights illuminated. The vehicle had a drastic reduction in speed. The vehicle was restarted. The vehicle was taken to the dealer on several occasions where it was repaired but the repair details were unknown. The repairs failed to remedy the vehicle. The contact stated the service engine warning light continued to illuminated and the vehicle jerked violently, reduced speed and attempted to stall. The manufacturer was notified of the failure. The approximate failure mileage was 136,037. Updated 12/03/15

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 Sep 2, 2014 · Lights · CT

Headlights randomly turn off while driving. Ford states this is not a safety issues, it is! Can't be driving without headlights; can cause accidents, tickets, failure to pass state inspections, etc. Ford has issued customer relationship campain 14n01, but the part to fix this problem is on back order, and they are unable or unwilling to give any time frame on when part witll be available.

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 Apr 16, 2014 · Acceleration · MS · fire

Tl* the contact owns a 2006 mercury grand marquis. The contact stated while driving 40 MPH, an unknown warning light illuminated on the instrument panel then the vehicle stalled. The vehicle was taken to an independent mechanic who stated that the throttle body system needed to be replaced. Shortly after the repair, the vehicle caught fire and was destroyed. The manufacturer was made aware of the failure. The failure and the current mileages were unknown.

Filed Jun 25, 2013 · Electrical · 54,400 miles · TX

Tl* the contact owns a 2001 mercury grand marquis. The contact stated that while driving approximately 70 MPH, the vehicle stalled. The contact was able to restart the vehicle several minutes later. The failure recurred three different times while driving at various speeds. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 54,400.

Filed Jun 14, 2013 · Transmission · 98,090 miles · NJ

Tl* the contact owns a 2005 mercury grand marquis. The contact stated that while driving 20 MPH, the vehicle stalled and would not accelerate. The contact stated that the transmission was defective but the vehicle had not been diagnosed by an authorized dealer or a certified mechanic. The failure mileage was 98,090. Updated 7/22/13