The exhaust flex pipe can fail causing excessive exhaust noise from the front/center area of the vehicle. The flex pipe is a flexible joint in the exhaust that allows for engine movement.
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Newest reported 1994 Saab 900 problems
Oil commonly leaks from the oil pan gasket requiring replacement of the gasket. Oil drops may be seen on the ground if the vehicle is parked over night.
Oil commonly leaks from the distributor o-ring requiring replacement of the o-ring. Oil will be visible on the front of the engine near the distributor.
The air conditioning expansion valve can fail causing poor, or no cooling from the AC system.
The exhaust center muffler can fail causing excessive exhaust noise.
Oil commonly leaks from the valve cover gasket requiring replacement of the gasket.
Oil can leak from the oil pump cover seal. Oil will be visible at the bottom and rear of the engine. The seal will need to be replaced.