Buick LeSabre Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Buick LeSabre
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Buick LeSabre ProblemsEngine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure
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 upper intake manifold may develop an internal coolant leak causing one or more cylinders to fill with coolant. This can cause the engine to "hydro-lock" and not turn over. Removing the spark plugs will allow the engine to turn over pushing the coolant out of the spark plug holes. Replacing the upper intake plenum and gasket is commonly required to correct this condition.
The engine can be very difficult to start after this problem has been repaired, it can be helpful to clear as much of the coolant from the intake manifold and cylinders as possible before reassembling the intake manifold.
Buick LeSabre Questionsmy air won't work how do I fix it???? (2 answers)
the air in my car has gone out completely as of today. as of 2 days ago it would work 70% of the time but occasionally (like 30% of the time) when I would start it the air wouldn't come on until I hit a hard bump or braked really hard. I think it may be an electrical issue because there are o...