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1990 Audi Coupe Quattro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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    Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Audi Coupe Quattro car and truck repair procedures including Audi engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Audi Coupe Quattro automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Audi mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1990 Audi Coupe Quattro vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

    A/C & HEATER SERVICE PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    A/C & Cooling System Maintenance -> Audi -> 1990-96
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    [[table data]]

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    AUDI, DISC BRAKES -> Girling Single Piston w/Dual Mounting Bolts, Front -> BRAKE PADS REPLACEMENT
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    • Raise and support vehicle, then remove front wheels.
    • On 100/200 models, pull plug connector for wear indicator out of clip, then press connector on knurled surface and pull apart.
    • On all models, using open end wrench to hold guide pin head, remove lower caliper mounting bolt.
    • Swing caliper upward, then remove brake pads.
    • Push piston back into caliper housing. Always remove some brake fluid from master cylinder reservoir prior to installing new pads. When caliper piston is pushed back, fluid is forced out ...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    Audi -> Fuel Filter Scheduled Maintenance -> All 1989-05 -> Normal Service -> Severe Service
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Normal Service

    Service as re...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    CV AXLE SHAFT, Replace -> Less Attached Wheel Bearing Housing -> W/Attached Wheel Bearing Housing
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    W/Attached Wheel Bearing Housing

    • Loosen wheel bolts.
    • Remove wheel hub to axle shaft bolt.
    • Raise and support vehicle, then remove washer and wheel.
    • Remove axle shaft flange, nut from link rod, and control arm to stabilizer bar to subframe mounting bolts.
    • Push control arm downward, then press axle shaft out of hub using a suitable puller.
    • Reverse procedure to install, noting the following:
      • Ensure splines on stub axle and wheel hub are free of oil, grease and old locking compound.
      • Apply a .2 inch (5mm) band of D6 locking compound around end of outer CV joint splines, then install ax...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    Alternator, Replace
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    • Disconnect battery ground cable at battery.
    • Relieve tension on drive belt and remove drive belt.
    • Remove electrical connections from alternator.
    • Re...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    Audi -> Electronic Ignition Warning Lamp ->
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    The electronic ignition system warning lamp will be illuminated when the ignition switch is placed in the On position. After the engine is started, the lamp should go off. If the lamp lights during engine operation, a knocking condition is indicated or a problem has arisen in the ignition sys...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Audi Coupe Quattro AUTOMOBILES

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Lower

    • Drain coolant into a suitable container.
    • Reposition hose clamp at radiator and remove hose.
    • Reposition hose clamp at thermostat and remove hose.
    • Remove hose from vehicle.
    • Reverse procedure to ...

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro RADIATOR & HOSE REPLACEMENT PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 1990 Audi Coupe Quattro AUTOMOBILES

    Component location diagrams for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. from 1990+.

    Auxiliary Relay Panel Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GASAuxiliary Relay Panel Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Components on diagram:
  • A/C Clutch Relay
  • Sunroof Relay
  • ABS System Relay
  • Seatbelt Warning Relay
  • Oil Pressure Control Unit
  • Passenger Compartment Components, Rear Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GASPassenger Compartment Components, Rear Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Components on diagram:
  • ABS Control Unit
  • Differential Lock Control Unit
  • ABS Accelerating Switch
  • CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1990 Audi Coupe Quattro AUTOMOBILES

    OEM drawn wiring diagrams for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S.

    1990 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring Diagram1990 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Alternator
  • Starter
  • Voltage Regulator
  • 1990 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring Diagram1990 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring Diagram

    Components on diagram:
  • Power Mirror Switch
  • Driver Mirror
  • Passenger Mirror
  • CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1990 Audi Coupe Quattro AUTOMOBILES

    OEM TSB listings for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. from 1985+.

    Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Auto Systems:
  • Seats, Belts, Interior Trim, Carpets, Air Bags
  • Document: AIRBAG / PYROTECHNIC SAFETY BELT DEPLOYMENT INQUIRIES - REVISED
    Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS

    Auto Systems:
  • Seats, Belts, Interior Trim, Carpets, Air Bags
  • CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1990 Audi Coupe Quattro AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1990 Audi Coupe Quattro cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 1990 Audi Coupe Quattro SPECIFICATIONS DATA!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details about 1991 Audi Coupe Quattro Seat Belt, Front, Driver And Passenger Side1991 Audi Coupe Quattro Seat Belt, Front, Driver And Passenger Side.

    Source: Auto Body Parts Store

    $94.42

    Click here to view more details1991 Audi Coupe Quattro Antenna, 4-section mast; 1200 mm cable; With top and side key; A high quality universal fender mount antenna; May require modification or other adjustment to your vehicle upon installation; With 1-year limited TruckEFX warranty..

    Source: Auto Body Parts Store

    $7.18

    Click here to view more details about 2006 Audi S4 18" X 8" Alloy Wheel2006 Audi S4 18" X 8" Alloy Wheel, ALLOY WHEEL, 18 X 8, 5 STUDS/LUGS, 112MM BOLT DIA, 6 SPOKES, AFTERMARKET CHROME, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $283.45

    Click here to view more details1991 Audi Coupe Quattro 20V L5, 2.3 L, 2309 CC Rebuilt Engine, Warranty: 7-Year/70,000 Mile, .

    Source: Rebuilt Engines Store

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    Click here to view more details1990 Audi Coupe Quattro Used Heater Core, 1.8T QUATT, Very Good.

    Source: Used Auto Parts Store

    $129.00

    Click here to view more details1990 Audi Coupe Quattro Used Heater Core, GLS 1.8T 1.8L (turbogas), Very Good.

    Source: Used Auto Parts Store

    $129.00
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