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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Audi 100 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 1991 Audi 100 automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, HYDRAULIC BRAKE SYSTEM -> HEIGHT SENSITIVE BRAKE PRESSURE REGULATOR -> 80/90 -> ADJUSTING -> CHECKING -> PRESSURE CHECK
Vehicle: 1991 Audi 100 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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BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, POWER BRAKE UNITS -> BRAKE BOOSTER, CHECKING -> 80/90
Vehicle: 1991 Audi 100 2.3 L5 GAS
80/90
- Depress brake pedal firmly approximately 20 times with engine Off.
- Depress brake...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, HYDRAULIC BRAKE SYSTEM -> MASTER CYLINDER REPLACEMENT
Vehicle: 1991 Audi 100 2.3 L5 GAS
Refer to Figs. through , when replacing master cylinder.
- Disconnect brake lines from master cylinder.
- R...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, ANTI-LOCK BRAKES -> TROUBLESHOOTING -> ABS RETURN PUMP DOES NOT RUN, RELAY GOOD, TESTER IN POSITION 3 -> ABS RETURN PUMP DOES NOT RUN, TESTER IN POSITION 3 -> LED 1 & 3 DO NOT LIGHT, TESTER IN POSITION 1 -> LED 13 DOES NOT LIGHT -> LED 19 DOES NOT LIGHT -> LED 2 DOES NOT LIGHT -> LED 35 DOES NOT LIGHT -> LED 4 DOES NOT LIGHT, TESTER IN POSITION 1 -> LED 4, 2, 35, 18 & 19 DO NOT LIGHT, TESTER IN POSITION 1 -> LED FOR ALTERNATOR DOES NOT GO OUT WHEN ENGINE STARTS -> LED FOR ALTERNATOR DOES NOT LIGHT, TESTER IN POSITION 2 -> LED FOR BRAKES DOES NOT GO OUT WHEN BRAKE PEDAL IS DEPRESSED -> LED FOR BRAKES DOES NOT LIGHT -> NO RESPONSE FROM SELECTED SENSOR, TESTER IN POSITION 6 -> POWER SUPPLY -> SENSOR SIGNAL ON METER BELOW MINIMUM VALUE -> Solenoid Valve Relay Check -> WRONG SOLENOID VALVE OPERATES, TESTER IN POSITION 5
Vehicle: 1991 Audi 100 2.3 L5 GAS
The Bosch ABS 2 LED-Tester or an equivalent Must be used during test procedures. Connect tester per manufacturers instructions.
POWER SUPPLY
- Check battery for full charge.
- Check that fuses 3, 12 and anti-lock brake power supply relay fuses are satisfactory. The anti-lock brake power supply relay fuse is located on top of the power supply relay.
- Check for continuity between ABS control unit connector terminal 13 and ground, at battery ground cable. Fig. .
- Turn ignition switch to the Off position.
- Check for continuity between ABS control unit connector terminal 10 and ground.
- Check for b...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, DISC BRAKES -> Girling Single Piston w/Dual Mounting Bolts, Front -> CALIPER OVERHAUL
Vehicle: 1991 Audi 100 2.3 L5 GAS
Refer to Fig. , when overhauling caliper.
- Place wooden block between caliper piston and caliper housing, then apply compressed air to brake line bore to force piston from housing.
- Remove piston seal from caliper piston bore using a plastic rod. If either caliper piston or caliper piston bore is corroded, pitted or scored, affected part must be replaced.
- Slide dust cap onto piston,...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 cars and light trucks from 1990+.
AUDI, HYDRAULIC BRAKE SYSTEM -> BRAKE PRESSURE REGULATOR -> 100/200 Quattro Models -> 1990-91 100 -> 1990-91 100/200 -> 1992 100 -> ADJUSTING -> CHECKING -> V8 Quattro
Vehicle: 1991 Audi 100 2.3 L5 GAS
CHECKING
1990-91 100/200
Brake pressure regulator is mounted on body (left rear), and operated by a spring attached to the rear axle.
- Firmly depress brake pedal once, with car on the ground.
- Release pedal suddenly and ensure lever on pressure regulator moves.
- Raise and support vehicle to remove load from rear axle.
- Press brake pressure regulator lever toward rear.
- Loosen nut from front of spring, then attach spring, without play or tension, to plastic roller.
- Torque nut to 18 ft. lbs.
1992 100
Brake pressure regulator is mounted on body (left rear), and operated by a spring attac...
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