The throttle position sensor (TPS) may fail. Common symptoms of a defective TPS can be rough idle, hard starting, hesitation on acceleration, poor fuel economy, and stalling.
Resources for the Repair and Maintenance of your 1992 Mercury Grand Marquis
1992 Mercury Grand Marquis
1992 Mercury Grand Marquis Problems
A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.
The EGR valve position (EVP) sensor can fail on this vehicle. The EVP sensor measures the EGR valve position and transmits the date to the engine control computer. If it fails, drivability and fuel economy can suffer, the Check Engine Light will commonly illuminate.
1992 Mercury Grand Marquis Recalls (Recent)
Summary: ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN.Learn more »
Summary: FORD IS RECALLING 225,000 MY 1992-2003 ECONOLINE, MY 1993-1995 TAURUS SHO, MY 1992-1998 CROWN VICTORIA, MY 1993 BRONCO, F-SERIES, MY 1995-1997 F-SERIES SUPER DUTY STRIPPED CHASSIS, MY 1992-1998 MERCURY GRAND MARQUIS, AND MY 1992-1995 LINCOLN TOWN CAR VEHICLES. THE AFFECTED VEHICLES WERE PREVIOUSLY REPAIRED USING A WIRING HARNESS THAT IS NOT COMPATIBLE WITH THE VEHICLE CIRCUIT POLARITY.Learn more »
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE SPEED CONTROL DEACTIVATION SWITCH CAN DEVELOP A RESISTIVE SHORT IN THE ELECTRICAL CIRCUIT THAT COULD POTENTIALLY RESULT IN AN UNDERHOOD FIRE. A FIRE IS POSSIBLE BOTH WHEN THE VEHICLE IS RUNNING AND WHEN THE VEHICLE ENGINE IS OFF. ALSO, THE SHORT COULD DISABLE THE SPEED CONTROL SYSTEM OR CAUSE THE BRAKE LIGHT FUSE TO OPEN.Learn more »
1992 Mercury Grand Marquis Questions and Answers
It doesnt blow smoke till its ran for awhile. It uses oil but no leaks. HELP!!!!
when i am driving my car i can see a smoke came from some place to inside my car. it is a very strong and bad smell. the same smell of my cooler. may i know why?
my car can not starting on the gear on parking, only if i put it one neutro. may i know why?
Why does my car start fine, but won't go into gear.
1992 Mercury Grand Marquis Reviews
i have had this car for years and years...i have barely taken good care of it, yet it keeps on driving good for me...its 2013 now and i need ac work and a couple windows fixed..otherwise ill drive it another 20 years,,,,,yay ford!
Just wanted to say thank you to 1996 Mercury Grand Marquis Visitor, Astoria, NY, October 21, 2011 08:16. My family was stuck with a 2003 Grand Marquis stuck gearshift that wouldn't shift out of park, 2 hours from home at 2am, and your solution was the only one that worked! Pumping the brake and wiggling the wheel while the engine was on as if everything was regular did the job to shift to Neutral, which freed them up to shift to Drive normally. Thank you! Pretty reprehensible that they even had a suggested solution in the manual---shouldn't they have taken care so the problem never occurred? My family has long gotten Mercury Grand Marquis but never had them longer than 3-5 years and no major issues. But from the start, this one is the worst ever. Constant problems with everything from sticking choke-you seatbelts to dying engine coils to brake wear to AC failures to just weird electrical issues. Even the way the cheap plastic grillwork falls out---pathetic. I never had any problems like this with my Subaru Legacy, so if I'm doing the picking next time, that's my choice.
P.S. Sorry, I don't know how this showed up under 1992 Mercury Marquis. I was clearly in another section, since I was quoting someone with a '96. Don't know what happened, but I wanted the helpful advice amplified for other future internet searchers.
I have a 92 Marquis had it for several years and only problem I have is that the gear shift if put in to park wont come out so I normally keep it in neutral and put EB on .. it works but it is not a fix.. I need to get it fixed. I cant take my keys out because it is not in part so I keep the doors locked on the electronic key on outside or door.. Anyone else have this probleme. I am about to put it inthe shop.. But would like to fix it myself if its easy ennough. I normally do all repairs on the car myself.. it cheaper than a shop..