This service manuals provide the highest level of clarity & completeness for all service & repair procedures. Enthusiasts, do-it-yourselfers, & professional technicians will appreciate the quality of photos & illus., theory of operation & accurate step-by-step instructions. Maintenance procedures from brake fluid changes to resetting the Service Indicator. This manual tells you what to do and how and when to do it. Engine and cylinder head service, repair, and reconditioning, including camshaft timing chain setup and adjustment. Information for specific BMW 3 Series driveability problems, including explanation of engine management systems and OBD (On-Board Diagnostics). Theory of operation and repair information for DISA (Dual Resonance Intake System) on 4-cylinder engines and VANOS (Variable Valve Timing) on 6-cylinder engines. Drivetrain maintenance, troubleshooting, adjustment and repair, including hydraulic clutch, gearshift linkage, and driveshaft. Heating and air conditioning repair, including A/C component replacement. Body adjustments and repairs, including convertible top replacement and adjustment. Wiring schematics for all circuits, including power distribution, grounds, and component location illustrations and photos. BMW E36 models and engines covered in this BMW repair manual: 318i/is/iC (M42 - 1.8 liter engine) (M44 - 1.9 liter engine, OBD II), 323is/iC (M52 - 2.5 liter engine, OBD II), 325i/is/iC (M50 - 2.5 liter engine), 328i/is/iC (M52 - 2.8 liter engine, OBDII), M3 (S50US - 3.0 liter engine) (S52US - 3.2 liter engine, OBD II). Transmissions covered: Manual (remove, install, external service) Getrag S5D 250 G, Getrag S5D 200 G, ZF S5D 310 Z, ZF S5D 320 Z, Automatic (remove, install, external service), A4S 270 R, A4S 310 R, A5S 310 Z.