Mercury Grand Marquis fuel pump problems

Filed Jul 18, 2022 · Acceleration, Electrical · CA

?yrs.ago While backing out of parking space at Calaveras Lumber, after shifting into reverse, & removing my foot from the brake; the engine appeared to receive a huge burst of fuel which shot me backward like a rocket slamming my vehicle into and wedging it under the frame of a pickup truck parked in the same lot. I am glad I was parked and had my foot on the brake prior to this unit or system malfunction otherwise the injuries could easily have been fatal on the highway. I think this defect may be a contributing factor to the car dying recently while on my way to a Wedding Reception in Roseville, which left me stranded after dark for 41/2hrs and 71/2hrs. 2days later. I have not been able to start vehicle since and mechanics unable to diagnose why the engine is fuel starved when system parts tested appear to be in good working order. Something seems to be shutting off power or preventing power to the fuel pump and it is not the inertia switch, relays, fuses etc.. Components have been previously inspected by numerous others including dealer. No Recognizable Alert/Warning Prior to Incidents!

Filed May 20, 2016 · Acceleration, Fuel system · CA

The passengers side seat beat comes undone at times and the speed sensor works intermittently and it leaks gas from around the fuel pump

Filed Sep 25, 2015 · Fuel system · 103,000 miles · PA

Tl* the contact owns a 2007 mercury grand marquis. The contact stated while driving approximately 10 MPH, the fuel tank fractured and separated from the vehicle. The vehicle was towed to an independent mechanic where it was diagnosed that the fuel tank straps failed due to excessive corrosion, and the fuel pump needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 103,000.

Filed May 26, 2015 · Fuel system · 92,958 miles · FL

Replacement airtex fuel pump (model e2272s) determined to be leaking gasoline from where the electrical wires pass through the nylon/plastic connector block assembly and/or from the junction of the nylon/plastic wire block assembly and the fuel pumps metal housing. Fuel pump installed in the vehicle on or about 5/31/2012 @ 79,353 miles. Leak not noticed/detected/reported until 7/23/2014 @ 92,958 miles.

Filed Oct 31, 2014 · Fuel system · 35,000 miles · MI

Tl* the contact owns a 2009 mercury grand marquis. The contact stated that after refueling, gasoline fuel fumes emitted inside the vehicle and the fuel would dissipate to half of a tank within twenty minutes of driving. The dealer diagnosed that the fuel line, the fuel pump, and the fuel seal needed to be replaced. The vehicle was repaired. However, the failure recurred. The manufacturer was not notified of the failure. The approximate failure mileage was 35,000.

Filed Feb 6, 2013 · Fuel system · 45,015 miles · CA

Tl* the contact owns a 2004 mercury grand marquis. The contact stated that the vehicle stalled without warning. The contact had the vehicle towed to a mechanic and was told the fuel pump needed to be replaced. The failure mileage and current mileages were 45,015.

Filed Dec 17, 2010 · Body, Fuel system · 77,000 miles · IL

Fuel pump and crankshaft sensor both went out on vehicle at same time. Repair of crankshaft sensor was a $400 and fuel pump repair was $740. Doors do not lock properly when using the key remote and lights inside the vehicle on controls flicker on and off. Heating element in leather seat on passenger side has never worked and had to replace tires due to unusual wear and tear. Cost to replace tires was $478. Driver sides door will not shut all the way due to alignment problems and this problem has not been corrected. Had to replace fuel filter due to leaking and this cost $178. Car has become a money pit and it only has 77,000 miles on it.

Filed Aug 3, 2009 · Fuel system · 23,000 miles · NY

Tl*the contact owns a 2001 mercury grand marquis. Whenever the contact would attempt to slow down the vehicle, he noticed that it would suddenly shut off. The vehicle was taken to the dealer and they stated that the fuel pump needed to be replaced. The current and failure mileages were 23,000. Updated 09/04/09.

Filed Nov 8, 2008 · Fuel system · WA

The recall is the fuel pump . I have three children and my vehicle is deemed unsafe to commute. The expenses are unattainable at this time to complete repairs.

Filed May 11, 2008 · Fuel system · 162,000 miles · CA

I have pictures of the fuel pump I took out of my 1992 mercury grand marquis. The car had coughed to a stop and I suspected the fuel pump. There was no pressure in the fuel rail so I pulled the pump out of the tank. I checked the pump with a battery and it ran fine. Then I started looking at the fuses and found the 20a pump fuse blown. Obviously there was a short somewhere. As you can see by pic 2 the short occurred when the "hot" wire insulation was worn through on the float bracket. In order to blow a 20a fuse there must have been a spark. Fortunately, it appears that the contact point was under the level of the gasoline when the short occurred and nothing else happened. If the point had been above the gasoline in the vapor area the results could have been much different. Pic 3 is how I routed the wire before replacing the assembly back in the tank. Btw you can see that I did use a new fuel pump. I still have the old one. I sent a message to the ford motor company through their web site but have not heard anything. As of now I am afraid to drive my 1997 grand marquis since the design is identical. I guess my next stop is the dot or better yet youtube. I never did understand putting an electric motor in the fuel tank. Jerry holland