The auto level ride compressor may fail causing the rear of the vehicle to ride to high or too low.
Car problem reports
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Most reported 1991 Buick Roadmaster problems
The idler arm or pitman arm may wear causing looseness in the steering. When this occurs the front suspension will not be able to be aligned correctly.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
A burning smell may develop due to an oil leak form one or both valve cover gaskets. Resealing the valve cover will generally correct this concern. However, the valve covers should be inspected and replaced if damaged.
A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.