BOSCH LH-JETRONIC - Engine Control System

• 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