This 1993 Audi 90 Quattro factory service and repair manual is built around the CS Sedan 4-Door and its 2.8L V6 (engine code AAH), so the torque values and repair steps you get are the ones Audi wrote for this exact drivetrain, not a generalized 90-series reference.
Engines covered
- 2.8L V6 — SOHC, naturally aspirated, gasoline
Body styles covered
- 4-door sedan
Trims covered
- CS
Known issues on the 1993 90 Quattro. Two recalls are on federal record for this model year. The first covers the fuel injection system: an internal seal in the fuel injector can fail, letting fuel leak into the engine compartment where an ignition source could turn that leak into a fire. The second covers the frontal air bag sensor/control module, which does not meet Audi's durability standards over the vehicle's lifetime and can malfunction in a way that deploys the air bag without warning, risking loss of vehicle control. Owners have filed 22 complaints for the year, and no technical service bulletins are logged. The factory diagnostic and repair procedures behind both systems are here.
Whether you're tracing a fuel injector seal or verifying the air bag sensor circuit, it keeps you on the OEM procedure and the correct specification for your specific 1993 90 Quattro.
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH V6 ENGINES. AN INTERNAL SEAL OF THE FUEL INJECTOR CAN MALFUNCTION, ALLOWING FUEL LEAKAGE IN THE ENGINE COMPARTMENT.
FUEL LEAKAGE IN THE PRESENCE OF AN IGNITION SOURCE CAN RESULT IN A FIRE.
DEALERS WILL REPLACE ALL FUEL INJECTORS.
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. DEPLOYMENT OF THE AIR BAG RESTRAINT SYSTEM WITHOUT WARNING COULD CAUSE A DRIVER TO LOSE VEHICLE CONT
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This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward.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.
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Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota.
HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER. *KB
BRAKE PEDAL SQUEAK. *TW
TIE RODS MIDAS AUTO REPAIR CENTER PUT ON MY 1993 AUDI 90 CS WHERE BOTH DEFECTIVE THAT THEY GOT FROM CAR QUEST. THE DAY THE TIE RODS FAILED WAS WHEN I AND MY WIFE WHERE COMING OUT OF THE DRIVE THROUGH
DRIVING ABOUT 40MPH WHEN VEHICLE STARTED TO DECELERATE. PULLED TO SIDE. SMOKE CAME FROM UNDER HOOD & FILLED INSIDE OF VEHICLE. OWNER EXITED VEHICLE & THEN SPARKS APPEARED & THEN FLAMES DROPPING FROM R
CONSUMER TOOK VEHICLE IN FOR RECALL (98V-332) REPAIR WORK ON THE FUEL INJECTION SYSTEM ON MAY 18, 2001, THE VEHICLE CAUGHT FIRE THE NEXT DAY IN THE ENGINE COMPARTMENT. *MJS
CONSUMER RECEIVED A RECALL NOTICE (98-V332) ON FUEL INJECTORS AND TOOK THE VEHICLE TO THE DEALER TO HAVE THE RECALL PERFORMED AND THEY INSTALLED FUEL INJECTORS AND A FUEL LINE, AFTER INSTALLATION THE
CONSUMER RECEIVED A RECALL NOTICE (98-V332) ON FUEL INJECTORS AND TOOK THE VEHICLE TO THE DEALER TO HAVE THE RECALL PERFORMED AND THEY INSTALLED FUEL INJECTORS AND A FUEL LINE, AFTER INSTALLATION THE
CAYALYTIC CONVERTER FAILED.
WINDSHIELD WIPER SYSTEM FAILED.
WATER PUMP FAILED,FAN SYSTEM FAILED,TIMING SYSTEM FAILED
Showing the 8 most serious of 22 complaints filed with NHTSA.
