The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.
Resources for the Repair and Maintenance of your 1999 Buick LeSabre
1999 Buick LeSabre
1999 Buick LeSabre Problems
The intake manifold gasket can develop external engine oil leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.
The water pump may develop a coolant leak resulting in an engine overheating condition.
1999 Buick LeSabre Recalls (Recent)
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH 4T65E AUTOMATIC TRANSMISSIONS. THESE VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FMVSS NO. 102, "TRANSMISSION SHIFT LEVER SEQUENCE." A RETAINING CLIP, WHICH SECURES THE MANUAL VALVE TO THE LINKAGE OF THE TRANSMISSION DETENT LEVER, CAN BECOME LOOSE UNDER A COMBINATION OF POSSIBLE DRIVER SHIFTING MANEUVERS AND ALLOW THE LINK TO BECOME DISCONNECTED FROM THE MANUAL VALVE.Learn more »
Summary: ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL TO ENTER THE INTAKE MANIFOLD THROUGH A VACUUM LINE. IF THE ENGINE DOES NOT START WHEN CRANKED, THE FUEL FROM THE LEAKING REGULATOR AND A MISTIMED SPARK CAN CAUSE A BACKFIRE.Learn more »
1999 Buick LeSabre Questions and Answers
car not turning over sounds like out of gas but is not out of gas
how do you get to the bulb?
airbag light stays on, at the same time, the seatbelt light and chime do not work.
There appears to be a gas leak in the car on the left side, coming from a hose. I am not an expert, and am wondering if there is anything else on that side that might have gas coming from it that ...
1999 Buick LeSabre Reviews
This has been a great car. Bought it in 2001. No major problems other than rotine maintenance.
Just had it checked at my garage. Paid $69 for used car safety check to make sure everything was OK. I needed a serpentine belt replaced ($260) and that was it.
Looks like I'll be driving this car for awhile longer.