Problems · by component
1997 Pontiac Bonneville engine and engine cooling problems
54 owner complaints to NHTSA about the 1997 Pontiac Bonneville cite engine and engine cooling, 34% of all 158 complaints for this model year.
Complaints
54
34% of all complaints
Crashes
0
Reported by owners
Fires
10
Reported by owners
Injuries
0
Reported by owners
What owners say about the engine and engine cooling
Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 1997 PONTIAC BONNEVILLE. WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE STALLED. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTICS WHERE THE MECHANIC WAS UNABLE TO DIAGNOSE THE FAILURE. THE MECHANIC REPLACED THE BATTERY AND CHECK OIL SENSORS. THE FAILURE CONTINUED AFTER THE REPAIR. THE VEHICLE WAS NOT FURTHER REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 107,000.”
“I HAD A 1997 PONTIAC BONNEVILLE. WHILE I WAS DRIVING DOWN A HIGHWAY IN MICHIGAN, THE ENGINE COMPARTMENT SUDDENLY CAUGHT ON FIRE. I WAS NOT SPEEDING, AND MY CAR WAS PERFECTLY SERVICED AND MAINTAINED. BY THE TIME THE FIRE SERVICE GOT THERE, THE WHOLE CAR BURNT DOWN. IT TOOK LESS THAN 20 MINUTES FOR THE WHOLE CAR TO GET BURNT BEYOND RECOGNITION. *TR”
“TL*THE CONTACT OWNS A 1997 PONTIAC BONNEVILLE. THE VEHICLE WAS LEAKING RADIATOR FLUID. THE DEALER REPAIRED THE LEAK. A YEAR AFTER THE REPAIR, THE FAN CONNECTED TO THE HEATER AND AIR CONDITIONER STOPPED WORKING. THERE WAS A POPPING NOISE INTERMITTENTLY UNDER THE HOOD NEAR THE DEFROST AND SUDDENLY, THE FRONT WINDOW CRACKED. THE DEALER HAS NOT DIAGNOSED THE FAILURE; HOWEVER, A MANUFACTURERS DEFECT DOES EXIST. THE HEATER FAN ALSO FAILED TO OPERATE INTERMITTENTLY. THE FAILURE MILEAGE WAS 83,000 AND THE CURRENT MILEAGE WAS 93,000. UPDATED 11/10/09 *BF UPDATED 11/13/09.*JB”
“TL*THE CONTACT OWNS A 1997 PONTIAC BONNEVILLE. THE CONTACT STATED THAT THE VEHICLE HAS PLASTIC INTAKE PARTS, WHICH INCLUDE THE UPPER AND LOWER INTAKE MANIFOLD. WHILE THE VEHICLE WAS UNDERGOING A ROUTINE TUNE-UP, SHE NOTICED ANTIFREEZE ON THE INTAKE MANIFOLD. THE VEHICLE MADE A LOUD BOOMING NOISE SIMILAR TO A BACKFIRE WHEN THE ENGINE WAS STARTED. THE CONTACT COULD SMELL FUEL IN THE PASSENGER COMPARTMENT AFTER PLACING FUEL INTO THE VEHICLE. THERE WERE NO RECALLS FOR THE FAILURES DESCRIBED ON THIS YEAR, MAKE, AND MODEL VEHICLE. THE VIN AND FAILURE MILEAGE WERE UNKNOWN. THE CURRENT MILEAGE WAS 134,000.”
“CAR COMPLETELY SHUTS DOWN WHILE DECELERATING AT ANYWHERE FROM 30-55 MPH. SOMETIMES CAN RESTART, SOMETIMES NOT FOR A HALF HOUR OR SO. THE CAR'S ENGINE COOLANT HAS LEAKED OUT ONTO ENGINE. CAR SHUT DOWN, NO POWER, NO STEERING, NO BRAKES, THEN THE COOLANT SPILLED OUT EVERYWHERE, ENGINE STARTED SMOKING AND NOW THE ENGINE HAS STOPPED WORKING EVEN AFTER REPLACING HEAD GASKET. CAR HAD BEEN INTO DEALERS NUMEROUS TIMES TO NO AVAIL. NO ONE COULD IDENTIFY THE PROBLEM. NOW HAVE A CAR THAT HAD TO BE TOWED AND IS NO LONGER FUNCTIONING. NUMEROUS FUEL INJECTORS WERE REPLACED IN HOPES OF STOPPING THE STALLING OUT AND SHUTDOWNS, BUT NOTHING HAS WORKED. WAITING FOR A COUPLE OF QUOTES ON WHAT IT WILL TAKE TO TRY AND FIX THE ENGINE OR MOST LIKELY NEED REPLACED. THIS HAS BEEN HAPPENING SINCE THE CAR WAS FAIRLY NEW.”
“DT: CALLER SAID THE PLASTIC INTAKE MANIFOLD BROKE . THIS HAPPENED WITHOUT WARNING. CALLER'S WIFE HAD TO GET HELP TO PUSH THE CAR OFF THE ROAD, AND CAR WAS TOWED TO A DEALER. CALLER SAID THERE WAS A RECALL # 04V090000. MANUFACTURER SAID THIS VEHICLE WAS NOT COVERED UNDER THE RECALL AND WOULD NOT OFFER ANY ASSISTANCE. *AK *NM”
Showing 6 of 54 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.