BOSCH LH-JETRONIC - Engine Control System

• Description
• Operation
  • Electronic Ignition System
  • Electronic Fuel Injection System
  • Constant Idle Speed (Cis) System
• Trouble Shooting
  • Engine Will 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
  • Inspection
    • LH-Jetronic Fuel System
  • Engine Does Not Start
    • B230F/Ft
    • B280F
  • Engine Starts, But Runs Rough Or Lacks Power
    • B280F Only
  • Circuit Checks
    • Notes
    • Coolant Temperature Sensor
    • Cylinder No. 1 Position Sensor (B280F)
    • Throttle Switch B280F
    • Knock Sensor B280F
    • Knock Sensor B230F/FT