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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Pontiac Lemans car and truck
repair procedures including Pontiac 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 Pontiac Lemans automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1990 Pontiac Lemans
- 1990 Pontiac Lemans GSE 2.0 L4 GAS, CID:122, Fuel Injection, Aspiration:122, Engine VIN:, Desg:K
- 1990 Pontiac Lemans LE 1.6 L4 GAS, CC:1588, CID:98, Fuel Injection, Aspiration:98, Engine VIN:, Desg:6
- 1990 Pontiac Lemans LE Aerocoupe 1.6 L4 GAS, CC:1588, CID:98, Fuel Injection, Aspiration:98, Engine VIN:, Desg:6
- 1990 Pontiac Lemans Value Leader 1.6 L4 GAS, CC:1588, CID:98, Fuel Injection, Aspiration:98, Engine VIN:, Desg:6
BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Type 3 -> INSTALLATION
Vehicle: 1990 Pontiac Lemans LE Aerocoupe 1.6 L4 GAS
- Lubricate backing plate at points shown,Fig. .
- Connect parking brake lever to parking brake cable.
- Ensure parking brake cable is properly routed, then install shoes and lining to backing plate with hold-down spring, washer and pin.
- Position adjuster shoe and lining and lower return spring against backing plate. Ensure spring is properly positioned under anchor plate.
- Install hold-down spring, washer and...
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BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> PROPORTIONING VALVE
Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS
The proportioning valve (when used), Fig. , provides balanced braking action between front and rear brakes under a wide range of braking conditions. The valve regulates the hyd...
CLICK HERE TO GET FULL ACCESS TO 1990 Pontiac Lemans BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> MASTER CYLINDER SERVICE -> Assembly -> CAST IRON TYPE -> COMPOSITE TYPE -> CORVETTE -> Disassembly -> EXCEPT CORVETTE -> Inspection
Vehicle: 1990 Pontiac Lemans Value Leader 1.6 L4 GAS
COMPOSITE TYPE
Refer toFigs. and when performing the following procedures.
EXCEPT CORVETTE
Disassembly
- Remove master cylinder from vehicle as follows:
- Disconnect and plug hydraulic lines.
- Remove two master cylinder attaching nuts, then the master cylinder.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch, if equipped.
- On models with compact master cylinder, remove proportioner valve assembly,Fig. .
- Depress primary piston and remove lock ring.
- Plug primary fluid ou...
CLICK HERE TO GET FULL ACCESS TO 1990 Pontiac Lemans BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> GENERAL PRECAUTIONS
Vehicle: 1990 Pontiac Lemans LE 1.6 L4 GAS
- Grease or any other foreign material must be kept off the brake linings, caliper, surfaces of the disc and external surfaces of the hub, during service procedures. Handling the brake disc and caliper should be done in a way to avoid deformation of the disc and nicking or scratching brake linings.
- If inspection reveals rubber piston seals are worn or damaged, they should be replaced immediately.
- During removal and installation of a wheel assembly, exercise care so as not to interfer...
CLICK HERE TO GET FULL ACCESS TO 1990 Pontiac Lemans BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> GIRLOCK SINGLE DIAPHRAGM TYPE -> Assembly -> Brakes Grab -> Brakes Slow To Release Or Drag -> Brakes Slow To Respond -> DESCRIPTION -> Disassembly -> Excessive Pedal Effort -> OVERHAUL -> TROUBLESHOOTING
Vehicle: 1990 Pontiac Lemans LE 1.6 L4 GAS
DESCRIPTION
This booster is a single diaphragm, vacuum suspended unit with a lightweight cast alloy housing,Fig. . Vacuum is applied to the front and rear housings. When the brake pedal is released, negative pressure is equalized on both sides of the diaphragm and power piston assembly. Spring tension holds the piston at the rest position. When the brakes are applied, the atmospheric port in the power piston is opened. Negative pressure in the front chamber pulls the diaphragm and vacuum piston assembly, reaction disc and output rod forward. Pressure on the master c...
CLICK HERE TO GET FULL ACCESS TO 1990 Pontiac Lemans BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 Pontiac Lemans cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Daewoo Single Piston w/Dual Mounting Bolts -> DESCRIPTION
Vehicle: 1990 Pontiac Lemans LE 1.6 L4 GAS
This caliper has a single bore, Fig. , and is mounted to the steering knuckle with two mounting bolts. Upon brake application, hydraulic pressure is converted by the caliper to stopping force. This force acts equally against the p...
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