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1991 Audi 100 Quattro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
A/C & HEATER SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Air Bag System Precautions -> Audi -> Disarming -> Air Bag II & III System -> Air Bag V System
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
Air Bag II & III System
The system must be disarmed prior to disconnecting any air bag system electrical connectors or servicing any system components or other components located near an air bag system electrical connector. Obtain the radio security code prior to disconnecting the battery ground cable. Establishing the engine control module and automatic transmission control module settings may be required using scan tool No. VAG 1551, or equivalent.
- Disconnect battery ground cable and cover negative terminal.
- On 1990-92 Coupe, Quattro, 80/90 and 19...
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BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
AUDI, HYDRAULIC BRAKE SYSTEM -> SYSTEM SERVICE -> 100/200 -> BLEEDING BRAKES -> Coupe Quattro & 80/90 -> V8 & 100/200 Quattro Models
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
BLEEDING BRAKES
100/200
To bleed brake system, use bottle with a transparent hose attached so that brake fluid can be checked for air bubbles.
- Bleed brakes in following sequence:
- Right rear caliper, left rear caliper, right front caliper, then left front caliper.
- After bleeding, fill reservoir to maximum mark.
V8 & 100/200 Quattro Models
To bleed brake system, use bottle with a transparent hose attached so that brake fluid can be checked for air bubbles.
- Connect brake filling and bleeding tool US 1116 or equivalent per manufacturers instructions.
- Bleed brakes in following sequence:
- Right r...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Audi -> Fuel Filter Scheduled Maintenance -> All 1989-05 -> Normal Service -> Severe Service
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
Normal Service
Service as re...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
- Remove wheel cover and remove nut securing axle shaft in hub.
- Raise and support vehicle, then remove wheels. Remove shield in right side driveshaft.
- Remove driveshaft flange to transmission securing screws, then pull speed sensor slightly out of housing.
- On automatic transmission models, remove stabilizer bar clamps and disconnect ball joint from hub.
- On all models, press axle shaft from hub using a suitable hub puller.
- Raise transmission en...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Starter, Replace
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
- Obtain audio coded anti-theft code, then disconnect battery ground cable.
- Disconnect electrical leads from starter solenoid.
- Remove starter mounting bolts, then the...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Audi -> Electronic Ignition Warning Lamp ->
Vehicle: 1991 Audi 100 Quattro 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...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
Inlet
- Drain coolant into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at union and remove hose.
- Remove hose from vehicle.
- Reverse procedure to in...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Audi 100 Quattro AUTOMOBILES
Component location diagrams for most 1991 Audi 100 Quattro cars and light trucks sold in the U.S. from 1990+.
Engine Compartment Components Diagram for 1991 Audi 100 Quattro 2.3 L5 GAS Components on diagram: |
Fuse/Relay Panel Diagram for 1991 Audi 100 Quattro 2.3 L5 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1991 Audi 100 Quattro AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Audi 100 Quattro cars and light trucks sold in the U.S.
1991 Audi 100 Quattro 2.3 L5 GAS Wiring Diagram Components on diagram: |
1991 Audi 100 Quattro 2.3 L5 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Audi 100 Quattro AUTOMOBILES
OEM TSB listings for most 1991 Audi 100 Quattro cars and light trucks sold in the U.S. from 1985+.
Document: AIRBAG / PYROTECHNIC SAFETY BELT DEPLOYMENT INQUIRIES - REVISED Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS Auto Systems: |
Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Audi 100 Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Audi 100 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 1991 Audi 100 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 1991 Audi 100 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 1991 Audi 100 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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