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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Oldsmobile 98 car and truck repair procedures including Oldsmobile 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 1990 Oldsmobile 98 automobile. Try the Automotix DIY solution today!
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We have info for following modifications of 1990 Oldsmobile 98

  • 1990 Oldsmobile 98 Regency 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C
  • 1990 Oldsmobile 98 Regency Brougham 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C
  • 1990 Oldsmobile 98 Regency Touring 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C

BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 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 Oldsmobile 98 Regency Brougham 3.8 V6 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 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 cars and light trucks from 1990+.

HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> TROUBLESHOOTING -> CHECKING FOR FLUID LEAKAGE -> ROAD TESTING
Vehicle: 1990 Oldsmobile 98 Regency Brougham 3.8 V6 GAS

When troubleshooting the hydraulic brake system, perform the following checks and inspections as outlined below. If problem still exists within system, refer toFig. first, then toFig. as necessary.

ROAD TESTING

When testing brakes, ensure the road is level and dry. Test brakes at both light and heavy pedal pressure. Do not lock up brakes or slide tires during a brake test.

Check the tires on the vehicle before performing a brake test. Tires should be equally inflated, identical in size ...

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BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 cars and light trucks from 1990+.

DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston w/Dual Mounting Bolts (Type 2) -> SERVICE -> BRAKE SHOE & LINING INSTALLATION -> BRAKE SHOE & LINING REMOVAL -> CALIPER ASSEMBLY -> CALIPER DISASSEMBLY -> CALIPER INSTALLATION -> CALIPER REMOVAL
Vehicle: 1990 Oldsmobile 98 Regency Touring 3.8 V6 GAS

CALIPER REMOVAL

  • Remove approximately2/3 of brake fluid from master cylinder.
  • Raise and support front of vehicle, then remove wheel and tire assembly.
  • Position suitable pliers over inboard pad and housing as shown in Fig. , and squeeze pliers to compress caliper piston.
  • If caliper assembly is being removed for service, remove inlet fitting attaching bolt, copper washer, and inlet fitting from caliper housing. Plug opening in inlet fitting to prevent fluid loss and contamination. Do not crimp brake hose, as this may damage internal structure of hose. If only shoe and lining assemblies are t...

CLICK HERE TO GET FULL ACCESS TO 1990 Oldsmobile 98 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 cars and light trucks from 1990+.

DRUM BRAKES, GENERAL MOTORS -> Type 5 -> REMOVAL
Vehicle: 1990 Oldsmobile 98 Regency Touring 3.8 V6 GAS

  • Raise and support vehicle.
  • Mark relationship of wheel to axle flange, then remove wheel and tire assembly.
  • Mark relationship of brake drum to axle flange, then remove drum.If brake drum is difficult to remove, back off parking brake cable adjustment, remove inspection hole plug from backing plate, insert screwdriver through hole and press in to push parking brake lever off stop.
  • Using suitable tool, rem...

CLICK HERE TO GET FULL ACCESS TO 1990 Oldsmobile 98 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 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 COMPONENTS -> ANTI-LOCK WARNING LAMP -> BRAKE WARNING LAMP -> ELECTRONIC BRAKE CONTROL MODULE (EBCM) -> HYDRAULIC UNIT -> TIMER FLASHER MODULE
Vehicle: 1990 Oldsmobile 98 Regency 3.8 V6 GAS

The anti-lock brake system, Fig. , consists of a pump motor assembly, fluid accumulator, pressure switch, fluid reservoir with integral filter, hydraulic booster/master cylinder, wheel speed sensors, Electronic Brake Control Module (EBCM) and a valve block assembly.

ELECTRONIC BRAKE CONTROL MODULE (EBCM)

The EBCM monitors speed of each wheel to determine if any wheel is beginning to lock. If a locking condition is sensed, brake pressures are automatically adjusted to provide for maximum stopping without wheel lock.

TIMER FLASHER MODULE

On some models, the pump circuit includes a t...

CLICK HERE TO GET FULL ACCESS TO 1990 Oldsmobile 98 BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1990 Oldsmobile 98 AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Oldsmobile 98 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 Oldsmobile 98 Regency Brougham 3.8 V6 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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Shop online for auto body parts, engines, wheels, lights...

Click here to view more details about 1990 Oldsmobile 98 Bumper Filler, Front1990 Oldsmobile 98 Bumper Filler, Front, With fender extensions; Made of high-density material for maximum durability and reliability; Designed to match OE specifications for a precise fit..

Source: Auto Body Parts Store

$157.73

Click here to view more details1991 Oldsmobile 98 Relay, Rear, For A/C control, blower motor, radiator fan, and compressor; A high quality, direct fit OE replacement relay..

Source: Auto Body Parts Store

$17.47

Click here to view more details2002 Oldsmobile Alero Wheel Center Cap, WHEEL CENTER CAP, AFTERMARKET CHROME , , .

Source: Wheels / Rims, Mirrors & Lights Store

$23.50

Click here to view more details1987 Oldsmobile 98 Regency V6, 3.8 L, 231 CID Rebuilt Engine, FWD, roller cam, No distributor, oil pump driven by splines. 7/16" Dia. dipstick tube, GM dipstick P/N 25531505, tube P/N 25531507. With oil pump kit only., Warranty: 7-Year/70,000 Mile, .

Source: Rebuilt Engines Store

$1,445.00

Click here to view more details1991 Oldsmobile 98 Used Tail Panel, Very Good.

Source: Used Auto Parts Store

$129.00

Click here to view more details1995 Oldsmobile 98 Used Ignition Switch W/Key, Very Good.

Source: Used Auto Parts Store

$69.00
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