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1990 Audi 100 Quattro Service and Repair Manual
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$40.99 USD
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Fits the 1990 100 Quattro — Base Sedan 4-Door ·
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$40.99
1990 Audi 100 Quattro Service and Repair Manual
Regular price
$40.99 USD
Unit price
This 1990 Audi 100 Quattro factory service and repair manual is built around the exact 2.3L inline-five (engine code NF) and Base Sedan trim, so the specs, wiring, and torque values inside match what Audi actually documented for this car rather than a generic 100-series approximation.
Engines covered
- 2.3L inline-five — SOHC, naturally aspirated, gasoline
Body styles covered
- 4-door sedan
Trims covered
- Base
Known issues on the 1990 100 Quattro. Four recalls are on federal record for this model year. The first covers the transaxle: differential oil can evaporate over time, and the resulting low oil level causes premature bearing and gear wear that can lead to differential failure, with a risk that the drive wheels lose power or the front wheels lock and cause rapid deceleration. The second covers the vehicle capacity weight placard, which was omitted from the label inside the gas filler door, leaving the vehicle out of compliance with federal labeling requirements. The third covers the trunk-mounted jack instruction label, which does not match the jack actually supplied with the car, risking incorrect use and jack collapse. The fourth covers the front airbag sensors, which may not meet durability standards over the vehicle's life and could allow inadvertent deployment. Owners have filed 16 complaints for the year, and no technical service bulletins are logged. The factory diagnostic and repair procedures behind each of those systems are here.
Whether you're inspecting the differential, replacing an airbag sensor, or working through routine service on the inline-five, it keeps you on the OEM procedure and the correct specification for your specific 1990 100 Quattro.
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.
THE VEHICLE CAPACITY WEIGHT WAS INADVERTENTLY OMITTED FROM PLACARD LOCATED INSIDE THE GAS FILLER DOOR, AS REQUIRED BY FMVSS 11O.
Consequence
VEHICLES FAIL TO MEET THE REQUIREMENTS OF FMVSS 110.
Remedy
NEW LABELS CONTAINING THE VEHICLE CAPACITY WEIGHT WILL BE AFFIXED TO THE VEHICLES.
INSTRUCTION LABEL IN THE TRUNK OF VEHICLE IS INCORRECT FOR THE JACK SUPPLIED WITH THE VEHICLE.
Consequence
INCORRECT USE CAN RESULT IN THE JACK COLLAPSING, WITHINJURY TO INDIVIDUALS UNDER OR NEAR VEHICLE DURING COLLAPSE.
Remedy
SUPPLY INSERT TO OWNER'S MANUAL NOTING CORRECT USAGE, AS WELL AS A CORRECTED INSTRUCTION LABEL FOR THE TRUNK.
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.
No service bulletins
No technical service bulletins on file with NHTSA for the 1990 Audi 100 Quattro.
TRANSMISSION FAILED, CAUSING VEHICLE TO BANG INTO REVERSE GEAR/ENGINE TO RACE/SUDDEN ACCELERATION. *SKD
SHORT IN DASHBOARD LIGHTS CAUSES FUSE TO BLOW FREQUENTLY.
UNIROYAL TIRE FAILED AFTER TWO MONTHS.
ENGINE WARNING LIGHT ILLUMINATED.
REAR WINDOW DEFOGGER INOPERABLE, CAUSING POOR VISIBILITY.
TEMPERATURE GAUGE SENDING UNIT REPLACED.
FAN BELT REPLACED.
EGR TEMPERATURE SENSOR REPLACED.
Showing the 8 most serious of 16 complaints filed with NHTSA.