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1991 Saab 9000 Problems
The APC Solenoid, also known as the boost pressure control solenoid, can fail creating an over-boost condition or a lack of boost from the turbocharger. This may be felt in an abrupt loss of acceleration under heavy load (climbing a hill, or quick acceleration).
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.
Oil can leak from the oil pump cover seal. Oil will be visible at the bottom and left side of the engine, behind the crankshaft pulley. The seal will need to be replaced.