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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Audi 100 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 1991 Audi 100 Quattro automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro cars and light trucks from 1990+.
AUDI, POWER BRAKE UNITS -> CHECKING PRESSURE ACCUMULATOR PRESSURE RELIEF VALVE -> 100/200
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
100/200
- Ensure pump delivery rate is within specifications. Refer to "Checking Brake Servo Operating Pressure," step 5.
- With engine off, depress brake pedal approximately 20 times to reduce system pressure.
- Disconnect warning light switch electrical connector, then remove switch.
- Attach pressure gauge wit...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 Quattro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro cars and light trucks from 1990+.
AUDI, DISC BRAKES -> Tightening Specifications
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 Quattro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro cars and light trucks from 1990+.
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...
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 Quattro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro cars and light trucks from 1990+.
AUDI, POWER BRAKE UNITS -> BRAKE BOOSTER, CHECKING -> 80/90
Vehicle: 1991 Audi 100 Quattro 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 Quattro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro cars and light trucks from 1990+.
AUDI, ANTI-LOCK BRAKES -> DIAGNOSIS & TESTING -> HIGH & LOW PRESSURE CHECKING
Vehicle: 1991 Audi 100 Quattro 2.3 L5 GAS
HIGH & LOW PRESSURE CHECKING
- Remove bleeder screw from one front brake caliper.
- Connect gauge set VW 1310 or equivalent, then bleed gauges.
- Install brake pedal depressor, between brake pedal and driver's seat.
- Load brake pedal until gauge reads 725 psi.
- Watch gauge for 45 seconds....
CLICK HERE TO GET FULL ACCESS TO 1991 Audi 100 Quattro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Audi 100 Quattro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Audi 100 Quattro 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 Quattro 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 Quattro BRAKE SERVICE PROCEDURES
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