While driving at 35mph and without warning the engine blewout, causing the consumer to pullover. Dealer notified.
1998 Pontiac Bonneville engine complaints
Page 5 of 8: complaints 101 to 130 of 200, newest first, as owners wrote them.
The intake manifold is made of plastic and because it is cooled by the engine coolant it regularly fails. Ph
I have a 1998 pontiac bonneville (gm 3800 liter v-6). The plastic intake manifold cracked allowing coolant to flood the cylinders and resukting in a $675 repair bill. Luckily this happened in my garage and not on the highway. No major engine damage. No fire; just a costly repair bill that I think gm should be responsible for.
My 1998 bonneville had been loosing antifreeze, the dealer replaced the thermistat, then the water pump went out. It still lost antifreeze....a couple weeks later while driving down the road it just died in the middle of the road. My intake manfold aloud my engine to fill with antifreeze, gm has a kit for this problem.....so they know it is a problem.
The vehicle stalled without warning. The dealer stated oil mixed with the anti-freeze.
Bonneville engine over heating and upper manifold cracked and broke.
Nar 04/28/2003 mr while driving 55-70 MPH the consumer engine died out because of a defective plastic intake manifold.
Upper intake manifold failed in my 1998 pontiac bonneville while driving on the interstate and caused the engine to hydrolock. This failure caused additional failures of the starter and spark plugs. Also the lower intake manifold was replaced without failing with a redesigned part. This leads me to believe that gm thinks there is something wrong with these manifolds that they need to be replaced with redesigned parts even if they don't fail. Total cost of repairs was $1600.
Engine failed while traveling on an interstate stranding my son and three friends for over 3 hours. The diagnosis is head gasket failure and will cost approx. $1300 to repair in addition to the $300 spent in towing fees. This is the 5th one of this make and model that we have been made aware that has had this problem. Does gm deliberately make engines to self-destruct?
The upper intake manifold cracked, which caused coolant to leak onto the engine. The dealer stated the problem occurred due to the plastic manifold not being able to withstand engine heat temperatures.
Coolant was sucked into the cylinders through a hole in the plenum which is part of the intake manifold system. I have read over 40 complaints detailing the same problem at this location. This engine had only 56,000 miles and dealer refused to warranty or to assist with costs. This is clearly a wide ranging defect and this fluid lock can suddenly and unexpectedly stop the engine while in traffic causing a potential for serious accidents. This defect affects all general motors vehicles with the 3.8 l engine yet general motors has refused to do a recall and I cannot detect any action by the federal safety agency to investigate this and force a recall. It is time to do this.
The original and the replacement upper intake manifold malfunctioned. Mr scc
There were problems with the intake manifold. * mr the vehicle failed to start due to the coolant leaking into the cylinders. The consumer then received a bulletin which was in reference to the intake manifold/coolant consumption leak. Scc
The consumer couldn't get the vehicle started. The consumer tried to get the vehicle started again and heard a loud noise which was followed by a fire under the hood. *scc *nlm referenced in ea02-030
While driving and without warning the intake manifold failed and caused the motor to seize. Dealer notified.
Plenum part number 17113136 failed have incurred $511.78 in damages through gm's neglect to admit to a design problem and their failure to do a voluntary recall, car still does not run properly and will end up costing more money to correct.
When the consumer attempted to start the vehicle, it cut off. This was due to a failed intake manifold. Dealer was notified and part was replaced.
Plastic intake manifold cracked. $1500 repair due to poor design. Engine stalled due to coolant leaking onto engine cylinders. Have done extensive research including web sites like carreview.com where over 10% of all comments on this car (good or bad) complained about intake manifold problems. Recall seems in order.
Plastic manifold melted causing coolant to flow into the piston chamber. This seems to be a major malfunction with this part and should be brought to gm's attention to be recalled with a better solution than a plastic manifold.
The upper intake on the vehicle, leaked antifreeze.
The intake manifold failed.
I own a 1998 pontiac bonneville with 87,000 miles and out of warranty. Late one evening my car suddenly let out a cloud white smoke and stopped in traffic. I assumed that when the engine light came on and the manual suggested "a tank of bad gas" or similar problems that the problem was not serious. After having my car towed to my dealer, I was very surprised when my dealer informed me that the intake manifold had cracked and coolant had infiltrated my cylinders. This "minor" repair ended up costing $1836 after replacing the manifold, gaskets, hoses, and thermostat. I do not have much trust in my vehicle nor the automobile manufacturer who knows that this is a problem with my year and model of car and does nothing to warn owners of this problem. I feel that I should be compensated for the parts and labor to replace a manufacturer mistake.
The upper intake manifold cracked and leaked antifreeze onto the engine which caused the engine to lock up.
The upper intake manifold cracked and leaked antifreeze onto the engine which caused the engine to lock up.*jb
The antifreeze leaked and caused damage to the rod bearings, and crankshaft.*dt
I have had the plenium manifold fail in my 1998 bonneville and have spoken to a dealer about this and tyey are aware of this problem but yet they do not have any plans to do any type of recall.the service dir. That I spoke with said they were having this problem with alot of the same style motors that gm put out but they have no plans on fixing this problem,but I had to spend 1100.00 of my money to get this problem fixed and the dealer just seems not to care that they have a problem.
The dealer diagnosed that intake manifold had cracked and leaked antifreeze over engine components. (related investigation ea02-030) ph the dealer replaced the upper manifold plenum. Scc
While vehicle was parked, the engine caught on fire. Dealer has been notified. Ph
Second replacement of the upper intake manifold.
Consumer called complaining about having problems with the intake manifold. Also stated that while driving the vehicle the engine will overheat. Dealer was contacted and stated that he had a different intake manifold and it was replaced but consumer has the same problem again. The second time the vehicle got on fire. Ts
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