This 1985 Porsche 928 factory service and repair manual is built for the S Coupe as Porsche specified it that year, so the procedures, clearances and torque sequences inside are the ones written for this exact car rather than a generic 928-era approximation.
Trims
- S Coupe 2-Door
Known issues on the 1985 928. Two recalls are on federal record for this model year. The first covers the catalytic converter area: materials near the converter, including automatic transmission fluid lines, sat close to an inadequate heat shield that could overheat, letting nearby materials ignite and creating a risk of underbody fire. The second covers the engine carrier: a faulty weld at the support bracket eyes could give way, and with higher mileage the carrier could develop a break, leading to steering blockage, loss of control, and possibly an accident. No complaints and no technical service bulletins are logged for the year. The factory diagnostic and repair procedures behind both systems are here.
From inspecting the heat shield and converter lines to checking the engine carrier welds, it keeps you on the OEM procedure and the correct specification for your specific 1985 928 S.
THE ENGINE CARRIER HAS A FAULTY WELD TO THE SUPPORT BRACKET EYES.
REPLACE THE ENGINE CARRIER AND THE CARRIER SUPPORT.
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.
