16 of the 69 complaints about the 1989 Mercury Grand Marquis are about the throttle and cruise control — 23% of everything reported for this model year. Half of the failures with a mileage on record happened before 64,000 miles.
16
Complaints
9
Crashes
0
Fires
2
Injuries
Filed with NHTSA, in their own words.
VEHICLE SPEED CONTROL
DT: THE CONSUMER OWNS A 1989 MERCURY GRAND MARQUIS. THE ENGINE REVVED UP WHICH CAUSED THE VEHICLE TO MOVE FORWARD WHILE HE HAD HIS FOOT ON THE BRAKE. THE FIRST TIME THIS INCIDENT HAPPENED IT DID NOT CAUSE AN ACCIDENT, BUT THE SECOND OCCURRENCE, HE REAR ENDED ANOTHER VEHICLE. *JB
NHTSA complaint #10121626 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
THE VEHICLE EXPERIENCED UNWANTED ACCELERATION, AND CRASHED INTO A TREE. *TS
NHTSA complaint #10011495 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
VEHICLE EXPERIENCED SUDDEN ACCELERATION RESULTING IN COLLISION AND INJURIES. MJS
NHTSA complaint #545982 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
WHILE ENGAGED IN CRUISE CONTROL VEHICLE EXPERIENCED SUDDEN ACCELERATION.
NHTSA complaint #544646 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
CONSUMER EXPERIENCING PROBLEM WITH VEHICLE ACCELERATION. WHILE PULLING INTO AN INTER SECTION, WAITING ON TRAFFIC LIGHT TO CHANGE, VEHICLE STARTED TO ACCELERATE. CONSUMER PRESSED DOWN ON BRAKES TO PREVENT VEHICLE FROM HITTING ANOTHER VEHICLE. CONSUMER WAS ABLE TO CHANGE GEAR INTO NEUTRAL, AND TAPPING ON ACCELERATOR PEDAL WAS ABLE TO DISENGAGE THE ACCELERATION. ALSO CRUISE CONTROL WAS NOT ENGAGED AT THE TIME. DEALER/MFR. NOTIFIED AND REFUSED TO ACCEPT RESPONSIBILITY. CAN NHTSA HELP IN THIS MATTER.
NHTSA complaint #835232 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
IN ONLY 3 OCCURRENCES WHEN STARTING VEHICLE, IT WOULD LEAP FORWARD UNEXPECTEDLY WHICH MAY CAUSE AN ACCIDENT. DEALER CANNOT DETERMINE PROBLEM. PLEASE PROVIDE FURTHER INFORMATION.
NHTSA complaint #834750 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
WHILE DRIVING ON HIGHWAY AT 60 MPH WITH CRUISE CONTROL ON, CRUISE CONTROL FAILED TO DISENGAGE, CAUSING VEHICLE TO ACCELERATE TO 85 MPH.
NHTSA complaint #521341 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
UPON STEPPING ON GAS PEDAL, THROTTLE STUCK WIDE OPEN, CAUSING VEHICLE TO ACCELERATE OUT OF CONTROL, RESULTIN GIN AN ACCIDENT.
NHTSA complaint #506152 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL:CRUISE CONTROL
IDLE SPEED CONTROL MODULE FAILED, CAUSING VEHICLE TO ACCELERATE OUT OF CONTROL, RESULTIN GIN AN ACCIDENT.
NHTSA complaint #506152 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
SUDDEN ACCELERATION, CAUSING ACCIDENT.
NHTSA complaint #502024 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
WHEN DRIVING THE CAR, SOMTIMES CAR ACCELERATES. PLEASE DESCRIBE .
NHTSA complaint #981371 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TURNED ON IGNITION ENGINE RACED TO FULL THROTTLE IN REVERSE AND LANDED ON ANOTHER VEHICLES WINDSHIELD.
NHTSA complaint #979620 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TURNED ON IGNITION ENGINE RACED TO FULL THROTTLE IN REVERSE AND LANDED ON ANOTHER VEHICLES WINDSHIELD.
NHTSA complaint #979620 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
VEHICLE ACCELERATED ON ITS OWN WHILE STARTING THE VEHICLE. TT
NHTSA complaint #977606 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
CONSUMER WAS DRIVING, STARTED TO PARK AND CAR ACCELERATED OUT OF CONTROL.
NHTSA complaint #968480 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
WHEN SHIFTING FROM REVERSE TO DRIVE VEHICLE ACCELERATED WITH GREAT SPEED TT
NHTSA complaint #966951 — an unverified report by a vehicle owner.