This new service manual is the only source of comprehensive and up to date maintenance and repair information for all models of the Volkswagen GTI, Golf and Jetta models from 1985 through 1992. Volkswagen has sold more than 860,000 of these popular cars since 1985. Here is a sample of some of the information you will find: -Fundamental automotive concepts, including explanations of basic troubleshooting, safe and effective workshop practices, and tools. -Complete tune-up specifications, plus troubleshooting and repair of the electronic ignition system and knock sensors. -Troubleshooting and repair of CIS, CIS-E, Digifant I and Digifant II fuel injection systems and the CIS-E Motronic engine management system. -Emission control tests, repairs and adjustments, including testing anreplacing the oxygen sensor, and resetting the OXS warning light. -Automatic and manual transmission maintenance, troubleshooting, adjustment and repair, and manual transmission rebuilding. -Anti-lock braking system (ABS) troubleshooting and repair. -Body adjustments and repairs, including sunroof. -Complete electrical system troubleshooting and repair, including electrical current flow diagrams. -Comprehensive Volkswagen factory tolerances, wear limits, adjustmentsand tightening torque specifications.