1991 Audi 90 Service and Repair Manual
1991 Audi 90 service and repair manual a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
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THE DIFFERENTIAL OIL OF THE TRANSAXLE IS LOST OVER TIME DUE TO EVAPORATION. LOW OIL LEVELS CAUSE PREMATURE BEARING AND GEAR WEAR AND EVENTUAL FAILURE OF THE DIFFERENTIAL.
IN THE EVENT OF FAILURE, THE VEHICLE'S DRIVE WHEELS COULDLOSE POWER. IN EXTREME CIRCUMSTANCES, THE F
DRAIN AND REPLACE THE DIFFERENTIAL GEAR OIL WITH OIL HAVING HIGHER PERFORMANCE CHARACTERISTICS.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME AIR BAG SENSORS DO NOT COMPLY WITH AUDI'S DURABILITY STANDARDS OVER THE LIFETIME OF THE VEHICLE.
IN THE EVENT THE SENSOR SHOULD MALFUNCTION, THE AIR BAG RESTRAINT SYSTEM CAN INADVERTENTLY DEPLOY.
DEALERS WILL REPLACE THE AIR BAG SENSOR CONTROL MODULE.
This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward.
Due to increasing requests for high voltage personal protective equipment (HVE PPE) for dealer technicians working with high voltage vehicles (Hybrid, Plugin Hybrid, Electric Vehicle), the Volkswagen Tools and Equipment Team has identified
AUDI: ENGINE, ON SOME VEHICLES, WOULD RUN IRREGULARLY OR HAVE MALFUNCTION INDICATOR LAMP (MIL) ON OR POSSIBLE FILTER ELEMENT FOR CAMSHAFT ADJUSTMENT VALVE CAN LOOSEN AND IN OIL CIRCUIT, THERE IS NO DAMAGE FROM LOOSENED PARTICLES. MODEL ALL.
Google Maps Street View (NVLW))
Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota.
VOLKSWAGEN: EXHAUST HEAT SHIELD, REPLACEMENT GUIDELINES. HEAT SHIELDS ARE TO BE INSPECTED AFTER COMPLETION O ANY TYPE OF REPAIR TO THE UNDERBODY (EXHAUST SYSTEM TRANSMISSION, ETC.), AND IF DAMAGED, REPLACED. *PE
HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER. *KB
INFORMATION OBTAINING THE FLUID CAPACITY CHART. *YC
WHILE DRIVING, ELECTRICAL SYS. WIRE HARNESS FRONT SHORTED, CAUSED FAN TO BURN OUT, VEHICLE OVERHEATED AND CAUGHT FIRE. TT
THIS FUEL LINE LEAK WAS DISCOVERED BY MY MECHANIC DURING AN INSPECTION OF THE EXHAUST. THE LINE IS LOCATED BETWEEN A HEAT SHIELD AND THE BODY OF THE CAR. MECHANIC MENTIONED THAT THERE IS THE POSSIBI
DRIVER'S SIDE RESTRAINT LOCKED, NOT EXTRACTING OR EXTENDING. DEALER HAS REPLACED THE RESTRAINTS. *AK
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