1998 Pontiac Bonneville: engine knocking or ticking

Filed Jul 21, 2011 · Engine · 80,433 miles · IN

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.

Filed Aug 30, 2007 · Engine, Fuel system · NJ

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.

Filed Mar 18, 2005 · Brakes, Electrical · CO

Consumer disappointed with reimbursement for 1998 pontiac bonneville. The fuel pressure regulator was replaced. *bf recall campaign: 04v090000. The recall is related to the fuel pressure regulator leak. The temperature gauge was fluctuating while the vehicle was being driven. The check engine light did not come on. The consumer turned the engine off and allowed it to cool off. The consumer restarted the vehicle and heard a loud back fire with a loud bang. The vehicle did not restart. The consumer smelled fuel shortly after. The vehicle was towed to a nearby dealer. The intake plenum and the intake plenum gasket needed to be replaced. The thermostat blew out again. The consumer stated that he feels that the failures are a result of the recall issue therefore the reimbursement check was not sufficient. The consumer stated that the brakes had a ticking noise.

Filed Jan 15, 2004 · Engine · IL · 1 injury

My complaint is that I am about to put my 4th and 5th intake manifold & manifold gasket, respectively, on my 1998 pontiac bonneville. I was driving down highway 55 at 70 MPH when my engine died, because my manifold keeps cracking!! Because my engine died, it kept blowing and forcing antifreeze down my intake and filling my cylinders with water and antifreeze, causing a vapor lock!!! This was terrible, because when I tried to restart the car in neutral going 70 MPH, with 20-25 cars around me and 3-5 semi trucks, the engine was locked up!!!!! Because of this 'vapor lock up' of the engine, I lost control of my car!!! I had no power steering, no power brakes, no control to be able to avoid a 20-25 car pile up, with tens to hundreds being injured!!!!!!!!! Gm needs to do a complete recall of all 3.1, 3.4 & 3.8 v6 engines made with plastic manifolds and plastic gaskets!!!! Gm needs to replace them with the aluminum manifolds and rubber gaskets they used to place on all engines manufactured since these changes which I believe is 1996!!!!! Next, after all these manifolds and gasket failures on my car, of which I change the oil every 2000 miles and have documentation to support my oil changes, the antifreeze has eaten my bearings and crankshaft mains and rod bearings and my engine is knocking badly!!! A fair resolution would be for gm to give me(free of any charge), a new engine to replace the one they damaged, with their defective parts, workmanship and manufacturing design changes. If there is no problem, then why has gm issued a very expensive tsb? To change the design, component and installation of these defective parts??????? Please see the attached url -http://www.petitiononline.com/mod_perl/signed.cgi?gmcnsmrs to view the over 1,200 people so far that has been identified in just a few months by word of mouth. Thank you, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Feb 10, 2003 · Engine · IL

The antifreeze leaked and caused damage to the rod bearings, and crankshaft.*dt

Filed Apr 23, 2001 · Engine · IL

Rod bearings for cylinders 1 and 2 failed due to lack of lubrication with recommended amount of oil in the vehicle. Gmc is not interested in finding the root cause. They have insinuated that we ran the vehicle without oil but can not explain why bearings for cylinders 3-6 show no signs of lack of lubrication. Gm is not offering any assistance although the vehicle is barely beyond warranty.