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BOSCH LH-JETRONIC - Engine Control System
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BOSCH LH-JETRONIC - Engine Control System
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Description
Operation
Computer Controlled Ignition
Constant Idle Speed System
Electronic Control Unit
Air Control Valve
Throttle Switch
Coolant Temperature Sensor
A/C Switch
Trouble Shooting
Engine Does Not Start
Engine Hard To Start (Cold & Warm)
Poor Or No Idle
Excessive Fuel Consumption
Poor Performance (Low Top Speed)
Erratic Idle
Idle Speed Too High
Idle Speed Too Low (Engine Cold)
Jerking, Poor Acceleration
Diagnosis & Testing
Notes
Electronic Control Unit For The Constant Idle Speed System
Throttle Switch
A/C Switch
Air Mass Meter Circuit
Coolant Temperature Sensor
Air Control Valve
Adjustment
Throttle Switch