This 1985 Porsche 944 factory service and repair manual is built for the Base Coupe 2-Door, so the torque values, clearances, and fuel-system procedures inside track what Porsche actually specified for this year rather than a generic 944 reference.
Trims
- Base Coupe 2-Door
Known issues on the 1985 944. Three recalls are on federal record for this model year. The first covers the high-pressure fuel line hose between the fuel rail and fuel pressure regulator, which is prone to hardening and can leak fuel at the metal fitting, with the leaked fuel able to ignite on the hot exhaust and start an engine compartment fire. The second covers the cruise control linkage, where corroded, unlubricated metal bushings and insufficient clearance around the shaft let the linkage bind and stick the accelerator pedal down, so the car holds its set speed without warning and the driver cannot bring it back down. The third covers the fuel delivery hose, which can be damaged by excess crimping pressure at the hose-end fitting, leading to a fuel leak, a drop in system pressure, engine stalling, and fuel vapor that can be ignited by a spark. Owners have filed 2 complaints for the year, and no technical service bulletins are logged. The factory diagnostic and repair procedures behind each of those systems are here.
From a fuel line inspection to freeing up a sticking cruise control linkage, it keeps you on the OEM procedure and the correct specification for your specific 1985 944.
FUEL HOSE MAY BE DAMAGED DUE TO TOO MUCH PRESSURE IN CRIMPING THE HOSE END FITTING.
HOSES WILL BE MODIFIED BY CUTTING OFF THE CRIMPED END FITTING AND REPLACING IT WITH A NIPPLE
METAL BUSHINGS FOR THE CRUISE CONTROL LINKAGE ARE SUBJECT TO CORROSION DUE TO WEATHER CONDITIONS. ALSO, THERE IS NOT ENOUGH CLEARANCE BETWEEN THE BUSHINGS AND THE SHAFT; AND THE LINKAGE
REPLACE THE METAL BUSHINGS WITH THE PLASTIC VERSION.
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 72 technical service bulletins on file with NHTSA.
I WAS DRIVING ALONG IN MY RECENTLY PURCHASED PORSCHE 944, AND SUDDENLY THE CAR LOST ALL POWER AND THE ENGINE COMPARTMENT BURST INTO FLAMES WITHOUT ANY WARNING. NEEDLESS TO SAY, THE ENTIRE UNDERHOOD AR
DURING TURNING AT HIGHWAY SPEEDS THE STEERING WILL SOMETIMES "LOCK" OR "JAM". IT HAS BEEN DIAGNOSED AS A FAILED STEERING COUPLER, MANUFACTURER'S PART NUMBER 944 347 027 01 - DRIVE SHAFT. I HAVE BEE
