System Components

The following engine components (as used on CNG vehicle) are identical to components used on gasoline vehicles. For component description, see THEORY/OPERATION - 3.3L GASOLINE article in the ENGINE PERFORMANCE section.

Throttle Body
Accelerator Linkage
Manifold Absolute Pressure (MAP) Sensor
Emission Systems (Except Evaporative System)
Engine Coolant Temperature Sensor
Intake Manifold
Intake Air Temperature Sensor (5.2L)
Throttle Position Sensor
Idle Air Control Motor (Automatic Idle Speed)
Crankshaft Position Sensor
Automatic Shutdown Relay
Oxygen Sensor
Vehicle Speed Sensor
Ignition System
Air Conditioning Components
Speed Control Components
Overdrive Components
Alternator (Generator)
Park/Neutral Position Switch
Brake Switch Controls

For service and component removal/installation procedures for shared components, see REMOVE/INSTALL/OVERHAUL - 3.3L GASOLINE article in the ENGINE PERFORMANCE section.

CNG fuel system uses following additional components.

Unique Powertrain Control Module (PCM)
CNG Fuel Injector Driver Module
CNG Fuel Shutoff Solenoid Relay
High-Pressure Fuel Fill Receptacle With An Internal One-Way Check Valve
Fuel Filter Mounted In Fuel Pressure Regulator
Unique CNG Fuel Injectors
High-Pressure, Stainless Steel Seamless Fuel Tubes
Stainless Steel, Double-Ferrule, Compression-Type Fuel Tube Fittings (Not At All Fuel Tube Connections Or Components)
Fuel Rail Mounted Fuel Low-Pressure Sensor
Unique Fuel Rail To Mount Fuel Injectors
High-Pressure Fuel Cylinders
Manual Fuel Control Valves (One On Each Fuel Cylinder)
Manual (Mechanically Operated) 1/4 Turn Gas Shutoff Valve
Fuel Rail Mounted Fuel Temperature Sensor
Fuel Rail Mounted And Electrically Controlled Low-Pressure Fuel Shutoff Solenoid
Fuel Pressure Regulator Mounted And Electrically Controlled High-Pressure Fuel Shutoff Solenoid
Fuel Pressure Regulator Warmed By Engine Coolant
Fuel Gauge High-Pressure Sensor Used To Operate Fuel Gauge
Separate Frame Rail Mounted Check Valve