This manual for the 1988 Audi 80 Quattro is built around the Base Sedan 4-Door trim specifically, so the procedures, clearances, and fluid capacities inside match what Audi actually published for this car rather than a generic 80-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 1988 80 Quattro. One recall is on federal record for this model year, covering the axle assembly: differential oil is lost over time through evaporation, and the resulting low oil level causes premature bearing and gear wear that can lead to differential failure, with drive wheels losing power or, in extreme cases, the front wheels locking and causing rapid deceleration and possible loss of vehicle control. Owners have filed 4 complaints for the year, and no technical service bulletins are logged. The factory diagnostic and repair procedures for that driveline system are here.
Whether you're checking differential oil level or working through a full driveline inspection, it keeps you on the OEM procedure and the correct specification for your specific 1988 80 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.
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
DRAIN AND REPLACE THE DIFFERENTIAL GEAR OIL WITH OIL HAVING HIGHER PERFORMANCE CHARACTERISTICS.
DRIVER AND PASSENGER DOOR CANNOT BE OPENED FROM THE INSIDE. TT
VEHICLES HEATER CORE IS DEFECTIVE AND IS LEAKING HOT LIQUID ON DRIVER AND PASSENGER SIDE FLOORS.THE WINDOWS ARE ALSO FOGGING. TT
MASTER CYLINDER LEAKED, TOOK TO DEALER AND HE REPLACED MASTER CYLINDER. *AK
DIFFERENTIAL DAMAGED, CAUSING LOW FLUID LEVEL, PRIOR TO RECALL, RECALL REPAIRS REFUSED DUE TO VEHICLE NOT BEING SERVICED BY AUDI DEALER. *DSH
