1988 Audi 90 Service and Repair Manual

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Factory-Grade Data

1988 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.

What's included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Base Sedan 4-Door

Engines covered

  • 2.0L 1984CC 121Cu. In. l4 GAS SOHC Naturally Aspirated
  • 2.3L 2309CC l5 GAS SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

1988 Audi 90 Recalls & Complaints

NHTSA #93V00600011/01/1993Component: POWER TRAIN:AXLE ASSEMBLY

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.

Consequence

IN THE EVENT OF FAILURE, THE VEHICLE'S DRIVE WHEELS COULDLOSE POWER. IN EXTREME CIRCUMSTANCES, THE F

Remedy

DRAIN AND REPLACE THE DIFFERENTIAL GEAR OIL WITH OIL HAVING HIGHER PERFORMANCE CHARACTERISTICS.

No service bulletins No technical service bulletins on file with NHTSA for the 1988 Audi 90.
19960910Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE1 injured

HEATER CORE FAILED AS VEHICLE WA SENTERING GAS STATION, WINDSHIELD BECAME FOGGED UP AND DRIVER'S RIGHT FOOT WAS BURNED BY HOT COOLANT. *AK

20000922Component: UNKNOWN OR OTHER

NO SUMMARY

19991007Component: STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE

THE ANTI-THEFT LOCKING MECHANISM THAT ENGAGES WHEN THE VEHICLE IS SHUT OFF, SOMETIMES ENGAGES WHILE DRIVING, CAUSING STEERING TO MALFUNCTION.THE DEALER HAS BEEN CONTACTED. *AK

19971112Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED

WHEN THE BRAKES ARE APPLIED THE BRAKES LOSE PRESSURE AND GO TO THE FLOOR, RESULTING IN EXTENDED STOPPING DISTANCE. THE DEALER HAS NOT BEEN NOTIFIED. *AK

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