Engine Controls - Basic Testing

• Model Identification
• Introduction
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Compression
    • Exhaust System Backpressure
    • Check At AIR Pipe
    • Check At Oxygen Sensor
    • Diagnosis
• A-3, No-Start Diagnosis
  • Engine Controls - Basic Testing
    • Definition
  • No Start - Engine Cranks Okay
    • General Inspection
    • Ignition System
    • Fuel System (TBI)
    • Fuel System (4.3L CPI)
• A-7, Basic Fuel System Checks
  • Fuel System Pressure Relief
    • Model 220 TBI Unit
    • CPI (4.3L)
  • Fuel System Pressure Test
    • Notes
    • TBI
    • CPI (4.3L)
  • Field Service Mode Check
• C-4, Basic Ignition System Checks
  • HEI-Est Distributor
    • Notes
    • Spark
    • Ignition Coil Power Source
    • Ignition Coil Resistance
    • Distributor Pick-Up Coil Short & Resistance Checks
    • Tach Pulse (RPM) Signal
• Idle Speed & Ignition Timing
• Diagnostic Circuit Check
  • Notes
  • A-1, Malfunction Indicator Light (Mil) Inoperative
  • A-2, Mil Always On Or Won't Flash Code 12
• Summary
• Wiring Diagrams
  • 2.2L
  • 4.3L VIN W
  • 4.3L VIN Z
  • 4.3L VIN Z With VCM
  • 4.3L VIN Z Without VCM