1995 Buick Lesabre Engine problems

The vehicle stalls without warning. It sometimes stalls while at a stoplight or while driving down the road/highway. I have had a complete tune up along with a fuel pump, crankshaft sensor, camshaft sensor, air mass sensor and god knows what else. I have tried to find out who else has had the problem and they are many and the only common factor is that no one has found a resolution. Thank you, [[redacted]] information redacted pursuant to the freedom of information act (foia), 5 u.S.C. 552(B)(6). *Tr

When pulling out of a parking lot driver heard a "thump/clunck" sound. Lights on console began to come on. Driver pulled over to a fire station. Serpentine belt and water pump came off. Please describe details. *Ak

Vehicle stalls intermittently while driving at any speed, vehicle taken to dealer, and had various repairs done. But, problem still reoccurring. Feel free to provide any further information. *Ak

While driving vehicle completely shutdown without warning, cause unknown. *Ak consumer states that if brakes would not have worked, a serious accident would have happened, dealer believes problem was caused by an intermittent ignition module failure, consumer has since had a tune up and has experienced no problems with local driving. *Slc

OIL PUMP VALVE STUCK BLEW OIL FILTER GASKET. *AK

Clutch assembly broke while driving. *Ak the driver heard some object hitting the bottom of th vehicle. Shortly after a/c failed. Upon looking under hood the noise was found coming from a broken belt. *Yh

Major oil leak prompted investigation that revealed defects. *Ak

While driving about any speed vehicle stalled without prior warning. *Ak

Major engine bearing failure, but oil pressure good. Had to dealership. *Ak

While driving on highway , travelling about 50mph, vehicle cut off three times. Also, engine check light came on and stayed on. Contacted dealer, and was able to repair. Engine check light came on again.Vehicle is at the dealer. *Ak

When driving along about 30-40 mph or less the engine will just quit. Vehicle has been in the shop 4 times in the last 30 day for this problem. Dealer cannot find what is causing this problem. *Ak

While driving it doesn't matter of the speed, engine will just die for no reason. This has happened numerous times. Has taken to the dealer. *Ak

Odor of rotten eggs from the emission permeates inside of car. *Sd

ENGINE OIL LEAK. *AK