1998 Pontiac Bonneville

THE BACK TWO CRADLE MOUNTS ON BOTH SIDES RUSTED OUT AND MOUNTS PULLED THROUGH THE CRADLE CAUSING THE STEERING TO BECOME LOOSE FILLING AND CAUSING STEERING TO BE OUT OF ALIGNMENT AND WHEN HIT BRAKES FRONT WOULD DART ONE WAY OR THE OTHER AND LOTS OF NOISE COMING FROM UNDER VEHICLE FROM CRADLE BOUNCING WHEN HITTING BUMPS TRIED THE FIND ONE IN JUNK YARDS AND ALL ARE THAT WAY. *TR

TL* THE CONTACT OWNS A 1998 PONTIAC BONNEVILLE. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 20 MPH THE VEHICLE SUDDENLY STALLED. THE CONTACT ATTEMPTED TO RESTART THE VEHICLE, BUT IT HESITATED TO START. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, WHO STATED THAT THE PLASTIC GASKET FROM THE INTAKE MANIFOLD FAILED AND CAUSED ENGINE COOLANT TO LEAK INTO THE ENGINE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ADVISED THE CONTACT TO TAKE THE VEHICLE TO AN AUTHORIZED DEALER FOR DIAGNOSTICS.THE VEHICLE WAS TOWED TO THE DEALER WHERE THE TECHNICIANS REPLACED THE INTAKE MANIFOLD AND THE INTAKE MANIFOLD GASKET. AFTER THE REPAIRS, THE CONTACT HEARD A KNOCKING NOISE COMING FROM THE ENGINE. THE VEHICLE WAS TOWED BACK TO THE DEALER FOR DIAGNOSTICS, BUT WAS NOT REPAIRED A SECOND TIME. THE APPROXIMATE FAILURE MILEAGE WAS 80,433.

98 PONTIAC 86,000 MILES INTAKE MANIFOLD FAILED FOR THE SECOND TIME... PARTS REPLACED...SPARK PLUGS (FOULED)..STARTER ASSEMBLY.. MOTOR WAS WATERLOCKED BROKE STARTER...INTAKE MANIFOLD GASKET REPLACED.....OIL CHANGED DUE TO COOLANT CONTAMINATION...REPLACE ANTIFREEZE...TOTAL BILL LABOR AND PARTS... $1387.99..GM HAS NUMEROUS SERVICE BULLETINS ON THIS ISSUE...WHY HAS A RECALL NOT BE ISSUED FOR THIS PROBLEM ?? *TR

MY UPPER INTAKE MANIFOLD LEAKS ENGINE COOLANT INTO THE COMBUSTION CHAMBERS AND INTO THE CRANKCASE. THE EGR TUBE MELTS THE UPPER PLASTIC MANIFOLD I HAVE HAD THE UPPER AND LOWER INTAKE REPLACED FOR THIS ISSUE ONCE BEFORE WITH GM PARTS AND IT HAPPENING AGAIN. IF IT NOT FIXED THE COOLANT CAN CONTAMINATE MY OIL AND LOCK UP MY ENGINE WHEN TRAVELING DOWN THE ROAD AND POSSIBLY CAUSE ME TO CRASH. IF THE ENGINE LOCKS UP I WILL LOSE POWER STEERING AND BRAKING ABILITY. *TR

I OWN A 1998 PONTIAC BONNEVILLE SE. I SAW RECENTLY THAT GM WAS RECALLING 1.5 MILLION VEHICLES WITH THE 3800 3.8 LTR V6. WAS WONDERING HOW THEY COULD RECALL THOSE VEHICLES AND NOT MINE, MY CAR IS IN THE SAME YEAR RANGE "1998" AND HAS THE EXACT MOTOR "3800 3.8 V6" AND OIL DRIPS ON MANIFOLD ON MY CAR AS WELL. WHAT KIND OF INFO CAN I GET ON THIS? THANK YOU *TR

98 BONNEVILLE WITH 3800 SERIES ENGINE. NOTICED COOLANT WAS LOW SO I ADDED COOLANT, THEN REPLACED THERMOSTAT BECAUSE HEATER WAS PUTTING OUT COLD AIR. SAW BIG CLOUD OF WHITE SMOKE. TOOK TO THE DEALER AND THEY SAID THAT DUE TO A KNOWN DEFECT INVOLVING A PLASTIC MANIFOLD AND EGR VALVE THAT THE COOLANT HAD MIXED WITH THE OIL DUE TO HOLES CAUSED BY THE DEFECT IN THE UPPER AND LOWER MANIFOLDS. CALLED PONTIAC DIRECTLY AND THEY SAID SORRY ABOUT YOUR SITUATION BUT NO RECALL. CONTACTED PREVIOUS OWNER AND HE SAID THE SAME THING HAPPENED 3 YEARS AGO AND HE HAD THE SAME THING FIXED. LONG STORY SHORT, I'M SPENDING $1400 FOR A PROBLEM THAT THE ENGINEERS OF THIS ENGINE KNEW WAS A PROBLEM FROM THE BEGINNING OF PRODUCTION. *TR

6 MONTHS AFTER PURCHASING THIS PROFESSIONAL CARED FOR CAR (GM GARAGE 8YRS) FROM MY MOTHER WITH ONLY 62,000 MILES ON IT I BEGAN SEEING COOLANT ON THE ENGINE WHICH LED ME TO HAVE MY MECHANIC AT PRECISION TUNE AUTO CARE TAKE A LOOK. HE SAID IT IS LIKELY A LEAK FROM EITHER THE PLENUM OR THE GASKET. AFTER DIGGING INTO IT THEY ENDED UP REPLACING UPPER PLENUM AND LOWER INTAKE GASKET AND COOLANT AND OIL. COST WAS 739.71. MILEAGE ON CAR AT THAT TIME WAS 78540. I HAVE RECEIPT FROM PRECISION. *TR

1998 PONTIAC BONNEVILLE POOR PRODUCTION MANIFOLD/GASKETS. CUSTOMER STATES THAT THE MANIFOLD/GASKETS AND DEX. COOL WERE IN POOR PRODUCTION ON HER VEHICLE. *KB THE UPPER INTAKE MANIFOLD NEEDED TO BE REPLACED. THE THERMOSTAT AND GASKET HAD COOLANT IN THEM. THE MASS AIR FLOW SENSOR WAS BAD. METAL FRAGMENTS WERE FOUND IN THE OIL WHICH WAS COMING FROM, THE ROD BEARING THAT FAILED DUE TO THE VEHICLE OVER HEATING AND COOLANT IN THE OIL. THE CATALYTIC CONVERTER NEEDED TO BE REPLACED BECAUSE THE VEHICLE WAS RIDING ROUGH AND THE ENGINE WAS SHAKING. THE CONSUMER STATED THERE WAS A RECALL ON THE VEHICLE TO PREVENT THE MANIFOLD FROM CRACKING. AFTER THE RECALL WAS PERFORMED IN JULY 2004, THE MANIFOLD CRACKED ONE MONTH LATER. THE CONSUMER STATED EVER SINCE THE RECALL WAS PERFORMED SHE HAS ENGINE PROBLEMS. THE CONSUMER STATED WHEN THE UPPER INTAKE MANIFOLD WAS REPLACED IN AUGUST 2004 THE LOWER MANIFOLD SHOULD HAVE BEEN REPLACED AS WELL TO PREVENT FUTURE DAMAGE, HOWEVER SINCE IT WAS NOT REPLACED, STOP LEAK PELLETS MIXED WITH THE DEX-COOL AND THE LOWER INTAKE MANIFOLD LEAKED.

I AM THE OWNER OF A 1998 PONTIAC BONNEVILLE WITH A 3800 ENGINE. I AM THE ORIGINAL OWNER AND THE CAR HAS LESS THEN 42,000 MILES ON IT. THE UPPER INTAKE (PLENUM) AND SEALS HAVE FAILED RESULTING IN COOLANT LEAKING INTO THE ENGINE. I PHONED AN ACQUAINTANCE WHO WORKED AS A TECHNICIAN AT THE GM POWER TRAIN ENGINEERING FACILITY IN FLINT, MICHIGAN WHERE THE 3800 ENGINE WAS ENGINEERED. HE SAID IT WAS COMMON KNOWLEDGE BY THE ENGINEERING SKILLED TRADES EMPLOYEES THAT THE UPPER INTAKE DESIGN WAS FLAWED. THERE WERE MANY INTAKE FAILURES OBSERVED DURING DYNAMOMETER TESTING. SOME EVEN EXPLODED. I WAS TOLD THAT THE ENGINEERS AND MANAGEMENT WAS WELL AWARE OF THE DEFECTIVE DESIGN, BUT FOR SOME REASON, CHANGES WERE NOT MADE. I CAN DIRECT INVESTIGATORS TO EMPLOYEES WHO WITNESSED INTAKE DESIGN FAILURES IN THE TESTING FACILITIES. *NM