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1990 Pontiac Lemans CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Pontiac REPAIR SHOPS DON'T WANT YOU TO KNOW
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!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
A/C & Cooling System Maintenance -> General Motors Corp. -> Pontiac LeMans
Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
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 Aerocoupe 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...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Component Locations -> Saturn L-Series & 1988-93 LeMans
Vehicle: 1990 Pontiac Lemans Value Leader 1.6 L4 GAS
Ref...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Pontiac Lemans Value Leader 1.6 L4 GAS
- Loosen both upper strut mount attaching bolts.
- Remove wheel cover, then loosen wheel lug nuts and remove cotter pin and drive axle shaft-to-hub nut and washer.
- Raise and support vehicle.
- Remove wheel and tire assembly.
- Remove ball joint retaining clip and stud nut, then separate ball joint from steering knuckle using ball joint separator tool No. J-36226 or equivalent. Disregard ``This Side Towards Wheel'' marking on tool. Tool must be turned to opposite position when used on these vehicles.
- Remove tie rod nut, then separate tie rod from steering knuckle using tie rod separato...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS
- Disconnect battery ground cable.
- Remove throttle body air inlet duct, then apply parking brake.
- Place transaxle in neutral gear position.
- Remove engine mount strut bolts and position mount aside.
- Install suitable engine ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
General Motors Corp./Saturn Cars -> Check Engine Or Service Now Soon Engine Indicator Lamps (Gasoline Engines w/Electronic Engine Controls Or EFI) -> Lemans
Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS
The Check Engine lamp should light when the ignition is turned On. When the engine is started, them should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detec...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Radiator, Replace
Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS
- Disconnect negative cable from battery.
- Drain cooling system into a suitable container.
- Disconnect lead wire at cooling fan motor.
- Disconnect air cleaner inlet hose.
- Disconnect reservoir tank hose.
- Disconnect upper and lower radiator hoses.
- On models with automatic transaxles, disconnect transaxle cooling lines from radiator. Drain transaxle oil in...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Pontiac Lemans AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Pontiac Lemans Value Leader 1.6 L4 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Pontiac Lemans AUTOMOBILES
Component location diagrams for most 1990 Pontiac Lemans cars and light trucks sold in the U.S. from 1990+.
RH Side Of I/P Diagram for 1990 Pontiac Lemans Value Leader 1.6 L4 GAS Components on diagram: |
LH Side Of Passenger Compartment Diagram for 1990 Pontiac Lemans GSE 2.0 L4 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Pontiac Lemans AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Pontiac Lemans cars and light trucks sold in the U.S.
1990 Pontiac Lemans Value Leader 1.6 L4 GAS Wiring Diagram Components on diagram: |
1990 Pontiac Lemans LE Aerocoupe 1.6 L4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Pontiac Lemans AUTOMOBILES
OEM TSB listings for most 1990 Pontiac Lemans cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1990 Pontiac Lemans GSE 2.0 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Pontiac Lemans AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Pontiac Lemans cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1990 Pontiac Lemans cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1990 Pontiac Lemans cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1990 Pontiac Lemans cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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