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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Chevrolet Corvette car and truck
repair procedures including Chevrolet 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 Chevrolet Corvette automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1991 Chevrolet Corvette
- 1991 Chevrolet Corvette 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:8
- 1991 Chevrolet Corvette ZR-1 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:J
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> SYSTEM OPERATION -> Diagonally Split System -> DUAL MASTER CYLINDER -> Front & Rear Split System
Vehicle: 1991 Chevrolet Corvette ZR-1 5.7 V8 GAS
DUAL MASTER CYLINDER
Front & Rear Split System
When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective systems,Figs. and .
If the rear (secondary) brake system fails, initial brake pedal movement will cause the unrestricted secondary piston to bottom in the master cylinder bore. Primary piston movement will displace hydraulic fluid in the primary section of the master cylinder to actuate the front brake system.
If the front (primary) brak...
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> DELCO-MORAINE SINGLE DIAPHRAGM TYPE -> Brakes Grab -> DESCRIPTION -> Hard Pedal -> OVERHAUL -> Slow Or No Release -> TROUBLESHOOTING
Vehicle: 1991 Chevrolet Corvette 5.7 V8 GAS
DESCRIPTION
This power brake unit is a suspended type vacuum brake booster which utilizes engine intake manifold vacuum and atmospheric pressure to assist in braking,Fig. .
The unit consists of a vacuum power section and a hydraulic master cylinder section. The vacuum power section contains a power piston with rolling diaphragm mechanism and power piston return spring.
The control valve consists of an air valve and floating vacuum control valve assembly. The reaction mechanism consists of a hydraulic piston, reaction plate and a series of levers. The valve opera...
CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet Corvette BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Corvette (Bosch ABS II Type) -> COMPONENT REPLACEMENT -> 1990-91 Models -> CONTROL MODULE -> LATERAL ACCELERATION SWITCH (ACCELEROMETER) -> MODULATOR VALVE -> WHEEL SPEED SENSOR -> WIRING HARNESS & MODULE RELAY
Vehicle: 1991 Chevrolet Corvette ZR-1 5.7 V8 GAS
MODULATOR VALVE
Replace modulator valve through access in rear storage compartment.
- Disconnect battery ground cable.
- Remove storage tray and insulation.
- Disconnect and remove entire ABS wiring harness from storage compartment.
- Disconnect modulator valve ground from body wiring harness.
- Disconnect five brake pipes from modulator valve, noting location for reassembly.
- Remove three modulator valve to bracket attaching nuts, then the modulator valve, Fig. .
- Reverse procedure to install, noting the following:
- Torque modulator valve to bracket attaching nuts to 7 ft. lbs.
- Remove shipping ...
CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet Corvette BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Corvette (Bosch ABS II Type) -> DIAGNOSIS -> 1990 -> 1990-91 Models -> 1991 -> ACCESSING FAULT CODES -> CLEARING CODES -> CODE DEFINITION -> DESCRIPTION -> Diagnostic Display Mode -> Diagnostic Enable Line Procedure -> DIAGNOSTIC TESTS -> Ignition Cycle Default -> Mode F0: ABS Data List -> Mode F1: History Data -> Mode F2: Trouble Codes -> Mode F3: ABS Snapshot -> Mode F4: ABS Tests -> PRELIMINARY DIAGNOSTIC CHECKS -> REQUIRED TEST EQUIPMENT -> Tech 1 Clear Codes Procedure -> TECH 1 DIAGNOSTICS
Vehicle: 1991 Chevrolet Corvette ZR-1 5.7 V8 GAS
1990-91 Models
DESCRIPTION
The Electronic Brake Control Module (EBCM) monitors its own performance and certain input and output signals to determine if a system malfunction has occurred. Most ABS self-diagnostics are performed by the controller after the vehicle reaches 1.7 mph. For this reason, the vehicle must be road tested to check for malfunctions that will set fault codes.
The Built-In Test Equipment (BITE) test is performed once during each ignition cycle when the vehicle reaches 3-11 mph. The BITE test cycles each solenoid valve and the pump motor to test component operation. The...
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BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1991 Chevrolet Corvette ZR-1 5.7 V8 GAS
When a premature rear wheel slide is obtained on a brake application, it usually is an indication that the fluid pressure to the rear wheels is above the 50% reduction ratio for the rear line pressure and that malfunction has occurred within the proportioning valve.
To test the valve, install gauge set shown in Fig. in brake line between master cylinder and proportioning valve, and at outpu...
CLICK HERE TO GET FULL ACCESS TO 1991 Chevrolet Corvette BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1991 Chevrolet Corvette AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1991 Chevrolet Corvette cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> BRAKE SHOES, LININGS & CALIPERS
Vehicle: 1991 Chevrolet Corvette 5.7 V8 GAS
Remove wheels and inspect brake disc, caliper and linings. The wheel bearings should be inspected at this time and repacked if necessary. Do not get any grease on the linings.
Do not replace individual pads or replace pads on one wheel of an axle set alone, as braking performance will be adversely affected.
If a visual inspection does not ade...
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