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BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> DELCO-MORAINE TANDEM DIAPHRAGM TYPE -> Assembly -> Brakes Grab -> DESCRIPTION -> Disassembly -> Hard Pedal -> OVERHAUL -> Slow Or No Release -> TROUBLESHOOTING
Vehicle: 1990 Cadillac Deville 4.5 V8 GAS
DESCRIPTION
This unit utilizes a vacuum power chamber, consisting of a front and rear shell, housing divider, front and rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return spring,Figs. and .
The unit operates in much the same manner as the single diaphragm unit described previously. The diaphragm and plate assemblies utilize the pressure differential between the engine intake manifold vacuum and atmospheric pressure to assist in braking.
TROUBLESHOOTING
Hard Pedal
- Internal vacuum leak.
- Faulty control valve.
Brakes Grab
- Faulty control valve...
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BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Bonneville, DeVille, Eighty-Eight, Electra, Fleetwood, Ninety-Eight, Park Avenue & 6000 (Teves Type) -> REQUIRED TEST EQUIPMENT
Vehicle: 1990 Cadillac Deville 4.5 V8 GAS
Some diagnostic procedures require use of a pressure gauge and Pin-Out Box tool No. J-35592 or equivalent.
- Install Pin-Out Box tool No. J-35592 or equivalent as follows:
- Turn ignition switch to the Off position.
- Depending on model, different procedures are required for EBCM removal. EBCM is either held in with two retainers, three screws, or a twist-type mount. EBCM is located on left side dash close out panel.
- Remove 35 pin harness connector from EBCM, depress locking plate, then turn t...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Deville BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Bonneville, DeVille, Eighty-Eight, Electra, Fleetwood, Ninety-Eight, Park Avenue & 6000 (Teves Type) -> DIAGNOSIS -> 1990 6000 -> 1990 MODELS EXCEPT 6000 -> ABS FUNCTIONAL CHECK -> ABS PRE-DIAGNOSIS INSPECTION -> ABS SYMPTOM DIAGNOSIS -> ABS TROUBLE CODE DIAGNOSIS -> BASIC DIAGNOSTIC PROCEDURE -> CLEARING ABS CODES -> DIAGNOSTIC TESTS -> DISPLAYING ABS TROUBLE CODES -> ELECTRICAL CONNECTOR IDENTIFICATION & LOCATION -> HISTORY & CURRENT ABS CODES -> LAMP SEQUENCE DETERMINATION -> LAMP SEQUENCE TEST PROCEDURE -> NOTE ON INTERMITTENTS -> PRE-DIAGNOSIS INSPECTION -> READING ABS TROUBLE CODES -> SELF-DIAGNOSIS -> SYSTEM VOLTAGE DURING DIAGNOSIS -> WIRING DIAGRAMS
Vehicle: 1990 Cadillac Deville 4.5 V8 GAS
1990 6000
WIRING DIAGRAMS
Refer to "Wiring Diagrams" in "Vehicle Systems".
ELECTRICAL CONNECTOR IDENTIFICATION & LOCATION
Diagnosis of system malfunctions requires three basic steps which must be followed in order to isolate the fault accurately and quickly. The proper diagnostic procedure consists of the following steps: Pre-Diagnosis Inspection, Lamp Sequence Determination and Component Test Charts. Refer to connector location and identification Figs. and , and circuit locationFig. , when performing diagnosis on this system.
PRE-DIAGNOSIS INSPECTION
The pre-diagnosis inspection consists of ...
[[table data]] [[table data]] [[table data]]CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Deville BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Bonneville, DeVille, Eighty-Eight, Electra, Fleetwood, Ninety-Eight, Park Avenue & 6000 (Teves Type) -> OPERATION
Vehicle: 1990 Cadillac Deville 4.5 V8 GAS
Under normal driving conditions the Anti-Lock brake system functions the same as standard brake system. However, with the detection of wheel lock-up, a slight bump or kick-back will be felt in brake pedal. This pedal "bump" will be followed by a series of short pedal pulsations which occur in rapid succession. Brake pedal pulsation will continue until there is no longer a...
CLICK HERE TO GET FULL ACCESS TO 1990 Cadillac Deville BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1990 Cadillac Deville 4.5 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 1990 Cadillac Deville BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Cadillac Deville AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Cadillac Deville cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1990 Bonneville, DeVille, Eighty-Eight, Electra, Fleetwood, Ninety-Eight, Park Avenue & 6000 (Teves Type) -> SYSTEM SERVICE -> BRAKE SYSTEM BLEEDING -> BRAKE SYSTEM FILLING -> DEPRESSURIZING HYDRAULIC ACCUMULATOR -> Front Circuit -> Manual Bleeding -> Pressure Bleeding -> Rear Circuit
Vehicle: 1990 Cadillac Deville 4.5 V8 GAS
DEPRESSURIZING HYDRAULIC ACCUMULATOR
Depressurize accumulator before performing any ABS service.
- Disconnect battery ground cable or place ignition switch in the Off position.
- Apply and release brake pedal a minimum of 20 times using approximately 50 lbs. of force on pedal. A noticeable change in pedal feel will occur when accumulator is completely discharged. If battery negative cable was disconnected, reactivate Delco-Loc radios by turning ignition and radio to the On position, then pressing the Mute button on the steering wheel control.
BRAKE SYSTEM FILLING
Ensure pump is not allowe...
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