This factory service and repair manual for the 1987 Porsche 928 S4 is built around that exact model year and trim, so the procedures, clearances, and fluid specifications inside match what Porsche published for this car rather than a range spanning several 928 iterations.
Trims
- S4 Coupe 2-Door
Known issues on the 1987 928. Two recalls are on federal record for this model year. The first covers the catalytic converter area: an inadequate heat shield above the converter could overheat, and materials nearby, including automatic transmission fluid lines, could ignite and cause an underbody fire. The second covers the return fuel line hose, which may not be ozone resistant and could crack, resulting in a fuel leak and engine compartment fire. Owners have filed 1 complaint 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 heat shield and fuel line inspection to routine service on the S4's V8, it keeps you on the OEM procedure and the correct specification for your specific 1987 928.
RETURN FUEL LINE HOSE MAY NOT BE OZONE RESISTANT.
FUEL HOSE COULD CRACK, RESULTING IN A FUEL LEAK ANDENGINE COMPARTMENT FIRE.
INSTALL A NEW HOSE WHICH IS OZONE RESISTANT.
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 73 technical service bulletins on file with NHTSA.
