Buick Roadmaster Problems
RepairPal has identified the most common problems with the Buick Roadmaster as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.Refine by vehicle
Illumination of the Check Engine Light may be the result of a loose or worn gas cap.
The spark plugs should be replaced every 30,000 miles and the spark plug boots should be checked for hot spots and cracks.
GM recommends replacing the spark plugs at 100,000 miles. Our technicians recommend replacing spark plug wires at this time also.
The transmission may develop a harsh 1-2 shift and/or illumination of the Check Engine Light with code P1870 stored. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. This condition does not commonly occur until the transmission reaches normal operating temperature. If the valve body is worn, replacement will be necessary to correct this concern.
Our technicians recommend to replace the fuel system filter every 30,000 miles.
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 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.
The throttle body gasket may develop a vacuum leak which may result in a higher than normal engine idle. Failed gaskets will require replacement.