1994 Saab 900 Problems

RepairPal has identified the most common problems with the 1994 Saab 900 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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13
Known Problems

The air conditioning expansion valve can fail causing poor, or no cooling from the AC system.

The AC evaporator can leak causing poor cooling of the air conditioning. The loss of refrigerant may be hard to diagnose.

Oil commonly leaks from the valve cover gasket requiring replacement of the gasket. Oil will be visible at the top of the engine and possibly in the center area around the spark plugs.

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 head gasket can fail causing the coolant and oil to mix in the engine, and external leaks. Symptoms can include overheating, white smoke from the tailpipe at start-up or acceleration, and the visible presence of oil in the coolant expansion tank.

Oil commonly leaks from the valve cover gasket requiring replacement of the gasket. Oil will be visible at the top of the engine and possibly in the center area around the spark plugs.

The Exhaust Gas Recirculation (EGR) Valve can fail, which also causes EGR distribution valve failure. The Check Engine Light may illuminate and there will be excessive exhaust noise.

If coolant is leaking, it may be from the water pump. Coolant will be seen at the front of the engine in the lower left.

 

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.

Coolant leakage between the cylinder heads can be caused by failure of the oil cooler cover seal. Mixing of oil and coolant is possible and would be seen in the coolant expansion tank.

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.

The exhaust center muffler can fail causing excessive exhaust noise.

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.