Engine Controls - Theory & Operation

• Introduction
• Computerized Engine Controls
  • Electronic Control Assembly (ECA)
  • Input Devices
    • Notes
    • A/C Compressor Clutch Signal
    • Air Charge Temperature (ACT) Sensor
    • Barometric Pressure (BP) Sensor
    • Brake On-Off (BOO) Switch
    • Clutch Engage Switch
    • Coolant Temperature Sensor
    • Crankshaft Sensor
    • EGR Valve Position (EVP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Fuel Injection Pump Lever (FIPL) Sensor
    • Heated Exhaust Gas Oxygen (HEGO) Sensor
    • Manifold Absolute Pressure (MAP) Sensor
    • Mass Airflow (MAF) Sensor
    • Neutral Gear Switch (NGS)
    • Neutral Safety Switch (NSS)
    • Power Steering (P/S) Pressure Switch
    • Profile Ignition Pick-Up (PIP)
    • Self-Test Output/Self-Test Input (STO/STI) Connectors
    • Throttle Position Sensor (TPS)
    • Variable Reluctance Sensor (VRS)
    • Vehicle Speed Sensor (VSS)
  • Output Signals
    • Notes
    • A/C Clutch Cycling Switch
    • Canister Purge Solenoid Valve
    • CHECK ENGINE Light
    • Cooling Fan
    • EGR System
    • Fuel Injectors
    • Fuel Pump
    • Fuel Pressure Regulator
    • Idle Speed Control (ISC) Valve
    • Self-Diagnostic
    • Self-Test Output/Self-Test Input Connectors - See SELF
    • Wide Open Throttle Cutoff
• Fuel Systems
  • Fuel Delivery
    • System Types
    • Low Pressure Fuel Pump
    • High Pressure Fuel Pump
    • Mechanical Fuel Pump
    • Mechanical Selector Valve
    • Reservoirs & Filters
    • Fuel Supply Manifold Assembly
    • Fuel Pressure Regulator
    • Fuel Pump Actuation
  • Fuel Control (Gasoline Engines)
    • Notes
    • Fuel Injection
    • Throttle Body Assembly
  • Fuel Control (7.3L Diesel)
  • Idle Speed (Gasoline Engines)
    • Idle Speed Control (ISC) Valve
  • Idle Speed (7.3L Diesel)
• Ignition Systems
  • DISTRIBUTORLESS Ignition System (Dis)
    • Notes
    • Electronic Distributorless Ignition System (EDIS)
    • Thick Film Ignition (TFI)
• Emission Systems
  • Notes
  • Valves And Switches
    • Temperature Vacuum Switch (TVS)
    • Vacuum Control Valve
    • Vacuum Delay Valve
    • Vacuum Reservoir
    • Vacuum Restrictor
    • Vacuum Vent Valve
  • Air Injection System
    • Notes
    • Air By-Pass Valve
    • Air Pump
    • Air Supply Control Valve
    • Check Valves
    • Combination Air By-Pass & Air Control Valve
    • Dual Thermactor Air Control Solenoid Valve
    • Thermactor Idle Vacuum (TIV) Valve
  • EGR System
    • Notes
    • Electronic EGR Valve
    • EGR Vacuum Regulator (EVR)
    • EGR Valve Position (EVP) Sensor
  • Evaporative Emission Control
    • Notes
    • Carbon Canister
    • Canister Purge Solenoid Valve
    • Fill Control/Vent System
    • Pressure/Vacuum Relief Fuel Cap
    • Vapor Vent System
  • Positive Crankcase Ventilation (PCV)
• Self-Diagnostic System
  • Notes
  • Check Engine Light
  • Self-Test Output/Self-Test Input (STO/STI) Connectors
• Miscellaneous Controls
  • A/C Clutch Cycling Pressure Switch (CCPS)
  • Cooling Fan
  • Wide Open Throttle A/C (WAC) Cutoff
  • Wait To Start Indicator Light
  • Water In Fuel Indicator Light