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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
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
Test 1 - Engine Starts But Will Not Run Properly
Test 2 - Testing System When Engine Will Not Start
Electronic Control Unit (Ecu) - Constant Idle Speed System
Throttle Switch Check
A/C Switch Check
Coolant Temperature Sensor (Cts) Resistance Check
Air Control Valve Check
Throttle Switch Adjustment