Engine Controls - Basic Testing

• Introduction
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Compression
    • Exhaust System Backpressure
    • Diagnosis
  • Pcm Replacement Check
• No Start Diagnosis (A-3)
  • Notes
  • Definition
  • No Start - Engine Cranks Okay (4.3L & 5.7L With OPTI-Spark)
    • General Inspection
    • Ignition System
    • Fuel System
• Basic Fuel System Checks (A-7)
  • Notes
  • Fuel System Pressure Test
    • Fuel Pressure Relief
    • Fuel Pressure Check
    • Fuel Pump Relay
    • Fuel Pump Relay By-Pass Procedure
  • Field Service Mode Check
• Basic Ignition System Checks (C-4)
  • HEI-Est Distributor
    • Notes
    • Spark
    • Ignition Coil Power Source
    • Ignition Coil Resistance
    • Distributor Pick-Up Coil Short & Resistance Checks
    • Tach Pulse (RPM) Signal
    • Hall Effect Switch (4.9L)
  • OPTI-Spark
    • Spark
    • Ignition Coil Power Source
    • Ignition Coil Resistance
    • Tach Pulse (RPM Reference) Signal
• Idle Speed & Ignition Timing
• Diagnostic Circuit Check
  • Notes
  • A-1, Mil Inoperative
  • A-2, Mil On Steady Or Won't Flash Code 12
• Summary
• Wiring Diagrams