Manifold/header/muffler/tail Pipe problems of the 1999 Buick Lesabre

Antifreeze leaking into engine through intake manifold plenum c ausing expensive replacement engines and or parts. Dangerous if engine locks up while driving.

Car was getting harder to start each time- red light (overheating) came on while on a trip- added 4 + qts of water- drove 15 miles- car would not start--added 3 + qts of water--tried several things to try to start--noticed oil level was up-- assumed coolant went into engine- removed 3 front spark plugs--coolant ran out of spark plug openings- car was towed 60 miles- intake manifold (warped), gaskets, & thermostat were replaced- starter replaced due to broken housing (from attempting to start water logged engine)- total expense approx $ 1,000.

- the contact owns a 1999 Buick Lesabre. While driving 65 miles per hour, the contact's check engine and oil warning lights turned on, at which point, the engine stalled. The contact was unable to restart the vehicle and had the vehicle towed. The contact's current mileage is 37,000 miles. Per the contact the NHTSA website sited the incident is a common problem. Per the mechanic, the failure was due to the intake manifold flooding the engine. The contact stated that several components were damaged including the starter, spark plugs, and a gasket. The contact called general motors and was told that the intake manifold had previously been repaired in 2004.

1998 Buick Lesabre. Consumer states that the upper manifold plenum which Buick changed to plastic overheated and melted causing a hole which allowed antifreeze to combine with the oil.

1999 Buick Lesabre plastic intake manifold failed.

1999 Buick Lesabre v6 3. 8l engine, 82,000 mi. Had been experiencing some surging, no other symptoms. 8/05 drove home, parked car, went out next morning and auto would not start. Towed to dealer service dept. Who found "water in cylinders". Used "stop leak" as temporary repair. 11/05 engine again locked, unable to start. Water in cylinders, water in oil. Contacted Buick customer service who suggested engine replacement or purchase of new vehicle. Independent mechanic informed me of "class action" suit due to faulty manifold intake and other engine defects. Have contacted attorney handling the suit. Suit involves "k" series 3. 8l engines, various models and years. For now, I need a new engine. As realtor and mortgage lender, I work through my car!.

The vehicle was takento dealer on a recall and mechanic determined that there was a leak in the intake manifold.

There is a part which is called the plenum. It causes a problem with the gasket, which messed up the intake manifold. Took to the dealer, but problem recurred.

Noticed coolant leak. Inspection by Buick dealer service department found coolant going into intake manifold. Intake manifold & gaskets needed replacement.

After some local driving and being parked, car produced cloud of exhaust smoke and then would not start. Problem traced to coolant leakage into cylinders from failure of upper intake manifold gaskets. Repair cost: $681. 30.

While driving at 35 mph, the vehicle over heated due to a plastic intake manifold. The consumer was forced to pull over. An independent technician replaced the manifold. The consumer stated the vehicle did not have a warranty. Dealer notified. . The engine coolant ate through the plenum chambers.

Had a new 1998 Buick park Ave and the intake manifold plenium went out almost ruining the engine. Bought a used 1999 Buick Lesabre and the same thing happened without any warning. The engine is ruined and must be replaced.

1999 Buick Lesabre has coolant leak at the manifold intake gasket. Engine light came on and smoke out of the back. Repair cost = $580. 00.

Upper and lower manifolds leaked coolant into the crank case on the 3800 series engine. . . ($1254. 24 repair cost) due to a faulty design on the manifolds, the company redesigned the manifold to take care of the problem. . . Why hasn't the company had a recall on this problem. . . ?.

While stopped at a traffic light the engine was running rough and then the intake manifold exploded. Dt.

While traveling on the highway, and without prior warning, there were gasoline fumes coming though the vents and the vehicle overheated. The dealership is aware of the problem. The consumer states that first the fuel pressure regulator was repaired, then the manifold was replaced. The mechanic stated that it looked like the manifold was defected from the factory.

The contact stated that when pressing on the gas pedal it hesitated. Also, rear side window will not go up or down. The window on the passenger's side will not go all the way up and it will not seal. Also ,the headlights came on and stayed on. The dealership reprogrammed the light and it came back on. The manifold intake blew out, costing the contact $150 to replace the intake gaskets. The brakes were noisy all the time. When making a left turn the flap will rub the tire, and it caused the tire to blow out .