Witte2Performance
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Volkswagen
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1989
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Jetta GL, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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System/Component Tests
System/Component Tests
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Introduction
Engine Sensors & Switches
Airflow Sensor (Cabriolet & Fox)
Airflow Sensor (Golf & JETTA)
Airflow Sensor (VANAGON)
Coolant Temperature Sensor (VANAGON)
Coolant Temperature Sensor (Fox)
Hall Sender
Oxygen Sensor (Except VANAGON)
Oxygen Sensor (VANAGON)
Throttle Valve Switch (VANAGON)
Relays
Fuel Pump Relay (Cabriolet)
Fuel Pump Relay (Fox)
Fuel Pump Relay (Golf & JETTA)
Fuel Pump Relay (VANAGON)
Fuel System
Fuel Delivery
Fuel Control
Cold Start Valve (Except Vanagon)
Thermo Time Switch (Except Vanagon)
Idle Control System
Idle Stabilization System (VANAGON)
Ignition System
Notes
Ignition Control Unit
Ignition Control Unit (Except Vanagon)
Ignition Control Unit (Vanagon)
Emission Systems
Exhaust Gas RECIRCULATION (EGR)
Fuel Evaporation
EVAP Canister By-Pass Valve (Cabriolet & Fox)
EVAP Canister By-Pass Valve (Vanagon)
Miscellaneous Controls
A/C Clutch