This 1991 Porsche 944 factory service and repair manual is built around the S2 body, its 3.0L L4 (VIN B) engine, and the specific coupe or convertible trim, so the torque values and procedures inside are the ones Porsche actually released for this car rather than an approximation drawn from another 944 model year.
Engines
- 3.0L L4 (VIN B) Gas
Trims
- S2 Coupe 2-Door
- S2 Convertible 2-Door
Known issues on the 1991 944. One recall is on federal record for this model year, covering the windshield wiper/washer motor: the plastic cowl cover at the base of the windshield was not properly sealed to the body, letting water reach the wiper motor and corrode it internally, causing the motor to fail and reducing driver visibility in bad weather. No complaints or technical service bulletins are logged for the year. The factory diagnostic and repair procedures behind that system are here.
Whether you're chasing a wiper motor that's gone quiet in the rain or working through a routine service interval, it keeps you on the OEM procedure and the correct specification for your specific 1991 944.
THE PLASTIC COWL COVER WAS NOT SEALED TO THE BODY AT THE BASE OF THE WINDSHIELD. WATER CAN LEAK AND REACH THE WINDSHIELD WIPER MOTOR, CAUSING INTERNAL CORROSION AND FAILURE OF THE WIPER MOTOR.
FAILURE OF THE WIPER MOTOR RESULTS IN REDUCED DRIVER VISIBILITY IN INCLEMENT WEATHER AND COULD RESUL
DEALERS WILL INSTALL A NEW WIPER MOTOR COVER.
Information for PIWIS tester update 42.300.050 & .052
Instructions on manufactures certificate for approved Porsche A40 engine oils
Instructions on manufacturers certificate for approved C20 engine oils
Instructions on manufactures certificate for approved Porsche C30 engine oils
Information for PIWIS tester update 42.300.035
Information for PIWIS tester update 42.300.040 & .041
Information for PIWIS tester update 42.300.030 - .032
Parts information for parts withdrawal involving the glass roof - 9J0877069EY and 9J0877069DY
Showing the 8 most recent of 75 technical service bulletins on file with NHTSA.
