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1990 Volkswagen Jetta CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Volkswagen 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
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Volkswagen Jetta car and truck
repair procedures including Volkswagen 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 Volkswagen Jetta automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
DRUM BRAKES -> Type 1 -> BRAKE SERVICE -> SHOES, REPLACE -> WHEEL CYLINDER OVERHAUL
Vehicle: 1990 Volkswagen Jetta GL 1.8 L4 GAS
Refer to Fig. for Exploded view of brake assembly.
SHOES, REPLACE
Failure to follow described procedures may lead to a reduction in parking brake efficiency.
- On Fox models, remove heat deflector plate, then disconnect parking brake cable from compensator bar.
- On all models, remove one wheel bolt, then push adjusting wedge upwards with a suitable screwdriver through wheel bolt hole to back off brake shoes.
- Reinstall wheel bolt and tighten to specifications, then remove grease cap with VW 637/2 or equivalent.
- Remove cotter pin and axle nut, then pull off brake drum.
- Remove spring r...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
Volkswagen -> Fuel Filter Replacement -> Gasoline Engines -> Models w/Fitting Or Union Bolt Connection -> Models w/Fuel Hose Connection
Vehicle: 1990 Volkswagen Jetta GL 1.8 L4 GAS
Models w/Fuel Hose Connection
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
After the battery has been disconnected and reconnected, some abnormal driveabilty symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.
- Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable.
- Disconnect the battery ground cable.
- On models equipped with underbody moun...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Volkswagen Jetta GTX 16-V 2.0 L4 GAS
- With vehicle on ground, remove drive axle retaining nut from wheel assembly.
- Raise and support vehicle.
- Remove drive axle to transmission drive flange attaching bolts.
- Separate ball joint from whe...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Volkswagen Jetta GL 1.8 L4 GAS
- Disconnect battery ground cable at battery.
- Relieve tension on drive belt and remove drive belt.
- Remove electrical connections from alternator.
- Re...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
Volkswagen -> Air Bag Warning Lamp ->
Vehicle: 1990 Volkswagen Jetta GL 1.8 L4 GAS
If the Air Bag warning lamp lights and stays on, diagnosis and ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 Volkswagen Jetta Carat 1.8 L4 GAS
Inlet
- Drain coolant into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at coolant connection and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Volkswagen Jetta AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Volkswagen Jetta GL 1.8 L4 GAS
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COMPONENT LOCATION DIAGRAMS FOR 1990 Volkswagen Jetta AUTOMOBILES
Component location diagrams for most 1990 Volkswagen Jetta cars and light trucks sold in the U.S. from 1990+.
 Engine Compartment Component Locations Diagram for 1990 Volkswagen Jetta 1.8 L4 GASComponents on diagram: |
 Engine Compartment Component Locations Diagram for 1990 Volkswagen Jetta GL 1.8 L4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Volkswagen Jetta AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Volkswagen Jetta cars and light trucks sold in the U.S.
 1990 Volkswagen Jetta Carat 1.8 L4 GAS Wiring DiagramComponents on diagram: |
 1990 Volkswagen Jetta GLI 16-VALVE 2.0 L4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Volkswagen Jetta AUTOMOBILES
OEM TSB listings for most 1990 Volkswagen Jetta cars and light trucks sold in the U.S. from 1985+.
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Document: BATTERY, DISCHARGED, DIAGNOSIS FOR EXCESSIVE STATIC CURRENT DRAW - REVISED Vehicle: 1990 Volkswagen Jetta GL 1.6 L4 DIESEL Symptoms: |
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Document: EXHAUST HEAT SHIELD, REPLACEMENT GUIDELINES - REVISED Vehicle: 1990 Volkswagen Jetta GL 1.6 L4 DIESEL Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Volkswagen Jetta AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Volkswagen Jetta 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 Volkswagen Jetta 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 Volkswagen Jetta 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 Volkswagen Jetta 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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