Auto Parts Search


      Over 40 million used auto parts online. Shop online for auto and truck parts and save up to 75%

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!
Help me findSearch
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!
DIY REPAIR SAMPLES > CONTINUE EXPLORING >

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+.

HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> COMPONENT DESCRIPTION -> BRAKE DISTRIBUTION VALVE & SWITCH -> BRAKE WARNING LAMP SWITCHES -> COMBINATION VALVE -> Failure Warning Switch -> Fluid Level Sensor -> Metering Valve -> Proportioning or Pressure Control Valve -> Testing Warning Lamp Operation
Vehicle: 1990 Oldsmobile 98 Regency 3.8 V6 GAS

BRAKE WARNING LAMP SWITCHES

There are four basic types of brake warning lamp switches as shown,Figs. through . When a pressure differential occurs between the front and rear brake systems, the valves will shuttle toward the side with the low pressure.

In the switch shown inFig. , movement of the differential valve forces the switch plunger upward over the tapered shoulder of the valve to close the switch contacts and light the dual brake warning lamp, signaling a brake system failure.

InFig. , the valve assembly consists of two valves in a common bore that are spring loaded ...

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+.

HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> SYSTEM OPERATION -> Diagonally Split System -> DUAL MASTER CYLINDER -> Front & Rear Split System
Vehicle: 1990 Oldsmobile 98 Regency Brougham 3.8 V6 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...

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+.

DISC BRAKES, GENERAL MOTORS -> General Information -> TROUBLESHOOTING
Vehicle: 1990 Oldsmobile 98 Regency 3.8 V6 GAS

When troubleshoot...

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+.

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+.

POWER BRAKE UNITS, GENERAL MOTORS -> TOYOTA/GM SINGLE DIAPHRAGM TYPE -> ADJUSTMENTS -> Assembly -> Booster Pushrod -> Brake Pedal -> Brakes Drag -> Brakes Grab -> Disassembly -> Hard Pedal/Brakes Inefficient -> Low Or Spongy Brake Pedal -> OVERHAUL -> TROUBLESHOOTING
Vehicle: 1990 Oldsmobile 98 Regency Brougham 3.8 V6 GAS

ADJUSTMENTS

Brake Pedal
  • With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
  • If distance is not 5.79-6.18 inches, adjust pedal height as follows:
    • Remove left lower instrument panel trim section and air duct.
    • Loosen stop lamp switch sufficiently to gain clearance for pedal adjustment.
    • Loosen locknut and rotate pedal pushrod as needed to obtain specified pedal height, then tighten locknut.
    • Adjust position of brake light switch so that plunger lightly contacts pedal stopper and brake lamps are off when pedal is release...

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...

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

Shop online for auto body parts, engines, wheels, lights...

Click here to view more details about 1989 Oldsmobile 98 Bumper Filler, Rear, Driver And Passenger Side1989 Oldsmobile 98 Bumper Filler, Rear, Driver And Passenger Side, Made of high-density material for maximum durability and reliability; Designed to match OE specifications for a precise fit..

Source: Auto Body Parts Store

$99.16

Click here to view more details about 1995 Oldsmobile 98 Oxygen Sensor1995 Oldsmobile 98 Oxygen Sensor.

Source: Auto Body Parts Store

$23.08

Click here to view more details2004 Oldsmobile Bravada 17" X 7" Steel Wheel, STEEL WHEEL, 17 X 7, 6 STUDS/LUGS, 5" BOLT DIA, 18 HOLES, BLACK , , .

Source: Wheels / Rims, Mirrors & Lights Store

$157.94

Click here to view more details about 1984 Oldsmobile 98 Regency V8, 5.7 L, 350 CID Rebuilt Engine1984 Oldsmobile 98 Regency V8, 5.7 L, 350 CID Rebuilt Engine, Flat lifters, 4-bolt main, optional high-performance engine supplied with flat top pistons, performance cam, 194 intake valve heads, and high volume oil pump., Warranty: 3-Year/100,000 Mile, .

Source: Rebuilt Engines Store

$1,243.00

Click here to view more details1995 Oldsmobile 98 Used Exhaust Manifold, 3.8L, VIN K, L. (Fr), Very Good.

Source: Used Auto Parts Store

$96.00

Click here to view more details1994 Oldsmobile 98 Used Air Flow Meter/Sensor, 3.8, AUTO, FWD (6-231, 3.8L), Very Good.

Source: Used Auto Parts Store

$65.00
More parts
Help me findSearch
Auto Repair Quick Search
Help me find
Search DIY repair manuals by VIN...
Vehicle Identification Number is a unique serial number used by the automotive industry to identify individual motor vehicles

Find out what info we have for your vehicle

Get the Complete Technical Service Bulletins!
Get the Complete Technical Service Bulletins!Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 1990 Oldsmobile 98 vehicle.
Access the Complete guide!
Need To Fix Your Car or Truck?
Save Money With Free Car Insurance Quote
FREE car insurance quote
Enter Zip Code:
GOT A WEBSITE?Make money with Automotix

Make money with Automotix Partner Program.

Learn more

Auto Repair Quick Search
Help me find