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Audi Coupe Quattro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW
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| 1991 | 1990 |
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 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!
A/C & HEATER SERVICE PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported Audi Coupe Quattro cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 1991 Audi Coupe Quattro 20V 2.3 L5 GAS
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BRAKE SERVICE PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported Audi Coupe Quattro cars and light trucks from 1990+.
AUDI, HYDRAULIC BRAKE SYSTEM -> HEIGHT SENSITIVE BRAKE PRESSURE REGULATOR -> 80/90 -> ADJUSTING -> CHECKING -> PRESSURE CHECK
Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS
CHECKING
80/90
Brake pressure regulator is mounted on right rear of body and operated by spring attached to rear axle. Test must be conducted with empty vehicle, full fuel tank and driver's seat occupied.
- Firmly depress pedal once (vehicle must be on ground).
- Release pedal suddenly and ensure lever on pressure regulator moves.
PRESSURE CHECK
80/90
- Ensure brake system is properly filled and bled.
- Connect gauge assembly US 1016 or equivalent, to left front and right rear calipers, according to manufacturer's instructions.
- On 90 models, bounce vehicle several times...
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FUEL FILTER REPLACEMENT PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported Audi Coupe Quattro cars and light trucks sold in the U.S. for 1980+.
Audi -> Fuel Filter Scheduled Maintenance -> All 1989-05 -> Normal Service -> Severe Service
Vehicle: 1991 Audi Coupe Quattro 20V 2.3 L5 GAS
Normal Service
Service as re...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported Audi Coupe Quattro cars and light trucks from 1990+.
DRIVESHAFT, Replace
Vehicle: 1991 Audi Coupe Quattro 20V 2.3 L5 GAS
Propeller shaft work must be performed with vehicle on a suitable dual support hoist. Models equipped with an air bag system have a front propeller shaft section made of carbon fiber. This propeller shaft has variations in diameter which make installation and adjustment procedures different from that of previous propeller shafts.
- Raise and support vehicle, then remove catalytic converter and exhaust pipe.
- Tie exhaust system over to right side with wire, then loosen propeller shaft bolts at transmission, differential and center support.
- On models less air bag system, install a s...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported Audi Coupe Quattro cars and light trucks from 1990+.
Alternator, Replace
Vehicle: 1991 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...
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MAINTENANCE LAMP RESET PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported Audi Coupe Quattro cars and light trucks sold in the U.S. from 1990+.
Audi -> Check Engine Lamp -> Less OBD II
Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS
The Check Engine 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 remains lit, a diagnostic trouble code has been stored in the Electronic Control Unit (ECU) memory. After completing diagnosis and repairs, the Check engine lamp can be reset as follows:
- With ignition switch ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR Audi Coupe Quattro AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported Audi Coupe Quattro cars and light trucks from 1990+
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1991 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 ...
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COMPONENT LOCATION DIAGRAMS FOR Audi Coupe Quattro AUTOMOBILES
Component location diagrams for most Audi Coupe Quattro cars and light trucks sold in the U.S. from 1990+.
 Ground Locations Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GASComponents on diagram: |
 Passenger Compartment Components, Front Diagram for 1990 Audi Coupe Quattro 20V 2.3 L5 GASComponents on diagram: |
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WIRING DIAGRAMS FOR Audi Coupe Quattro AUTOMOBILES
OEM drawn wiring diagrams for most Audi Coupe Quattro cars and light trucks sold in the U.S.
 1991 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring DiagramComponents on diagram: |
 1991 Audi Coupe Quattro 20V 2.3 L5 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR Audi Coupe Quattro AUTOMOBILES
OEM TSB listings for most Audi Coupe Quattro cars and light trucks sold in the U.S. from 1985+.
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Document: ACRYLIC TRANSIT PROTECTIVE COATING - INFORMATION/V8 Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS Auto Systems: |
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Document: VAS 5051 DIAGNOSTIC TESTER - INSTALLING BASIS CD VERSION 3.10 FOR ACCEPTING 7 DIGIT IMMOBILIZER PIN Vehicle: 1990 Audi Coupe Quattro 20V 2.3 L5 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR Audi Coupe Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 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 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 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 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
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