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1990 Audi 90 Service and Repair Manual
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$40.99 USD
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Fits the 1990 90 — Base Sedan 4-Door ·
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Matched to your exact vehicle
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$40.99
1990 Audi 90 Service and Repair Manual
Regular price
$40.99 USD
Unit price
This 1990 Audi 90 factory service and repair manual is matched to the Base Sedan 4-Door and its 2.3L inline-five (engine code NG), so the torque values, wiring paths and adjustment procedures inside are the ones Audi documented for that exact powertrain, not a generalized 90-series writeup.
Engines covered
- 2.3L inline-five — SOHC, naturally aspirated, gasoline
Body styles covered
- 4-door sedan
Trims covered
- Base
Known issues on the 1990 Audi 90. Three recalls are on federal record for this model year. The first covers the transaxle: differential oil is lost over time to evaporation, and the resulting low fluid level causes premature bearing and gear wear that can lead to drive-wheel power loss or the front wheels locking and rapid deceleration. The second covers the frontal air bag sensor and control module, which did not meet durability standards and could inadvertently deploy the air bag without warning. The third covers the steering column's anti-theft lock, where an improperly manufactured lock bolt could break under force and leave the steering wheel locked even after the key is turned. Owners have filed 6 complaints 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 differential fluid check to a steering lock inspection or an air bag sensor diagnosis, it keeps you on the OEM procedure and the correct specification for your specific 1990 90.
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 FRONT WHEELS LOCK, CAUSING RAPIDDECELERATION RESULTING IN POSSIBLE LOSS OF VEHICLE CONTROL AND AN ACC
Remedy
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.
Consequence
IN THE EVENT THE SENSOR SHOULD MALFUNCTION, THE AIR BAG RESTRAINT SYSTEM CAN INADVERTENTLY DEPLOY. DEPLOYMENT OF THE AIR BAG RESTRAINT SYSTEM WITHOUT WARNING COULD CAUSE A DRIVER TO LOSE VEHICLE CONT
Remedy
DEALERS WILL REPLACE THE AIR BAG SENSOR CONTROL MODULE.
IMPROPERLY MANUFACTURED STEERING LOCK BOLTS COULD BREAK IF DRIVER APPLIES EXCESSIVE FORCE TO A LOCKED STEERING WHEEL IN AN ATTEMPT TO DISENGAGE THE STEERING LOCK.
Consequence
BOLT BREAKAGE WOULD CAUSE STEERING WHEEL TO REMAIN LOCKED EVEN AFTER THE DRIVER TURNS THE IGNITION KEY AND ATTEMPTS TO MOVE THE CAR; THIS TOTAL LOSS OF STEERING CONTROL COULD RESULT IN AN ACCIDENT.
Remedy
REPLACE COMPLETE STEERING LOCK ASSEMBLY, INCLUDING A MODIFIED LOCK BOLT.
No service bulletins
No technical service bulletins on file with NHTSA for the 1990 Audi 90.
WHEN PUT IN REVERSE, TRANSMISSION DELAYS THEN UNEXPECTEDLY ACCELERATES INTO REVERSE, ALSO RPMS ARE ABNORMALLY HIGH IN FORWARD DRIVE. *AK
RECALL REPAIR NOT COMPLETED DUE TO LACK OF PARTS (97V-172). MJS
RECALL REPAIR NOT COMPLETED DUE TO LACK OF PARTS (97V-172). MJS
BATTERY EXPLODED, AFTER STARTING THE VEHICLE IGNITION COIL HAD A CRACK. TT
BATTERY EXPLODED, AFTER STARTING THE VEHICLE IGNITION COIL HAD A CRACK. TT
HIGH PRESSURE FUEL LINE SPRANG LEAK UNDER CAR NEAR FIREWALL