There are 12 stored owner reports matching the engine leading-label group for the 2002 Mercury Grand Marquis in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 12 of 12 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2002 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THERE WAS A PREMATURE FAILURE IN WHICH THERE WAS AN INTERNAL CRACK ON THE INTAKE MANIFOLD, WHICH CAUSED WATER INTRUSION THAT AFFECTED OTHER COMPONENTS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.
I WAS LEAVING A SHOPPING CENTER PARKING LOT WHEN I STARTED THE CAR UP AND EVERYTHING WAS OKAY. I SHIFTED THE CAR INTO REVERSE AND IMMEDIATELY THE ENGINE STARTED TO RACE EXTREMELY FAST CAUSING THE CAR TO MOVE BACKWARDS WITH MY FOOT STILL ON THE BRAKE. I TRIED TO TURN OFF THE IGNITION, BUT I WAS TOO CLOSE TO THE CAR BEHIND ME AND I HIT IT. I WAS MOVING ABOUT 10 TO 20 MILES PER HOUR WITH MY FOOT ON THE BRAKE WHICH FAILED TO STOP THE VEHICLE. AFTER THE ACCIDENT, THE CAR RAN OKAY. I TOOK THE CAR TO THE SOUTH HILLS LINCOLN DEALERSHIP WHERE IT HAD BEEN PURCHASED. THEY CLAIM THERE IS NOTHING WRONG WITH THE CAR. I HAVE ONLY 27,100 MILES ON THE CAR. IT IS A 2002 MODEL AND I HAVE OWNED IT SINCE IT WAS NEW. I CALLED FORD TO TRY TO GET HELP BUT THEY SAID THERE IS NOTHING THEY CAN DO. THE DEALER HAD THE CAR FOR FOUR DAYS AND COULD NOT FIND ANYTHING WRONG WITH IT. I NOW HAVE A CAR WITH JUST OVER 27,000 MILES AND AM CONCERNED ABOUT DRIVING IT. I DO NOT KNOW WHAT ELSE TO DO AND FORD COULD NOT CARE LESS. I DID HAVE OTHER INSTANCES (ABOUT SIX) WHEN ON STARTUP THE ENGINE WOULD BEGIN TO RACE. I WOULD IMMEDIATELY TURN THE ENGINE OFF AND RESTART IT AND THEN IT WOULD BE OKAY. IN SEPTEMBER, 2010, I DID TAKE THE CAR TO A DIFFERENT REPAIR SHOP AND THEY REPLACED THE IDLE CONTROL VALVE, BUT THIS DID NOT DO ANY GOOD. THE CAR MIGHT GO A MONTH OR TWO WITHOUT A PROBLEM. THE ACCIDENT WAS THE FIRST TIME IT HAPPENED WHEN THE CAR WAS IN GEAR. OTHER THAN THIS, THE CAR IS IN PERFECT CONDITION AND I CANNOT AFFORD TO REPLACE THIS CAR WITH ONLY 27,000 MILES ON IT.
PLASTIC HEATER SUPPLY TUBE (LOCATED IN REAR OF PLASTIC INTAKE MANIFOLD) FAILED CAUSING ENGINE TO OVERHEAT. INTAKE MANIFOLD HAS TO BE REPLACED. *LN
TL*THE CONTACT OWNS A 2002 MERCURY MARQUIS. THE CONTACT NOTICED FLUID ON THE GROUND WHEN THE VEHICLE WAS TURNED OFF. THE VEHICLE WAS TAKEN TO THE MECHANIC WHO LOCATED THE FAILURE AS THE INTAKE MANIFOLD. THE VEHICLE WILL BE REPAIRED. THE FAILURE AND THE CURRENT MILEAGES WERE 105,000.
TL*THE CONTACT OWNS A 2002 MERCURY GRAND MARQUIS. WHILE DRIVING 35 MPH THE VEHICLE SHUT OFF. THE CHECK ENGINE, BATTERY, AND TRACK WARNING LIGHTS ILLUMINATED. THE CONTACT STATED THAT SHE HAD TO WAIT AN HOUR TO RESTART THE VEHICLE. AS OF AUGUST 8, 2007, THE DEALER HAS NOT REPAIRED THE VEHICLE. THE CURRENT AND FAILURE MILEAGES WERE 73,000.
THE GEARS TENDED TO POP, MAKING THE VEHICLE JUMP FORWARD, AS WELL THE ENGINE LEAKING OIL, AND INCREASING THE CHANCE OF THE VEHICLE TO OVERHEAT. TAKEN TO DEALER FOR REPAIRS 4 TIMES, BUT THE PROBLEM RECURRED. CONSUMER WAS INFORMED THAT A NEW ENGINE WAS NEEDED, BUT IT WILL BE AT CONSUMER'S EXPENSE.*AK
THE VEHICLE HAD AN ODOR. *JB
WHILE TRAVELING IN INCLEMENT WEATHER THE BELT FELL OFF THE ENGINE CAUSING THE VEHICLE TO SHUT DOWN. THE DEALER IS AWARE TSB #02-05-04. *PH THE CONSUMER SUGGESTED THAT THIS WAS A COMMON PROBLEM WHEN THE BELTS GET WET. *SC
NO SUMMARY. DT
SERPENTINE BELT BROKE OFF WHILE CONSUMER WAS DRIVING, CAUSING STEERING, BRAKES, AND A FEW OTHER PARTS ON VEHICLE TO MALFUNCTION. CONTACTED DEALER, AND DEALER WAS NOT WILLING TO DO ANYTHING. *AK
THE CARS EXHIBITS PROBLEM DESCRIBED IN BULLETIN 15415 SB630431. DEALER CLAIMED IT WAS EXHAUST VIBRATION. THEY REALIGNED THE EXHAUST. THIS DID NOTHING TO CORRECT. THE DEALER CLAIMS IT MUST BE THE WAY I DRIVE SINCE ALL THE OTHERS ON THE LOT ARE JUST LIKE. *AK
THE VEHICLE CAUGHT FIRE WHILE IT WAS PARKED AND THE CAUSE HAS NOT BEEN DETERMINED YET. (ENCOMPASS INSURANCE) *YH
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.