Description & Operation

WARNING: This page is about a different car, the 2002 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting ANY repairs involving steering column, instrument panel or related components, see AIR BAG SAFETY PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.

NOTE: This article covers features unique to Natural Gas Vehicle (NGV) fuel indication system. For instrument cluster functions, diagnostics and removal and installation procedures not unique to NGV fuel indication system, see ANALOG INSTRUMENT PANELS - ECONOLINE - GASOLINE & DIESEL article. Natural gas vehicles are identified by "M" as eighth VIN character.

NOTE: This article includes Cutaway and RV Cutaway.

WARNING: DO NOT modify system configuration or components. DO NOT replace components with parts not specifically designed for use with natural gas. Natural gas components and gasoline fuel components are not interchangeable. Use of improper parts or materials could result in engine damage, fire or personal injury.

Natural gas fuel indication system consists of Natural Gas Vehicle (NGV) module assembly, Powertrain Control Module (PCM), fuel gauge, fuel tank pressure sensor, tank temperature sensor and related circuitry.

NGV module assembly consists of a 60-pin module, a waterproof cover and 4 cover retainers. NGV module houses the unique electronics required for natural gas fuel systems. NGV module features injector drivers and fuel gauge driver. NGV module monitors fuel tank pressure sensor, fuel tank temperature sensor, fuel gauge and related circuitry, and is able to perform self-diagnostics on natural gas system. NGV module Diagnostic Trouble Codes (DTCs) may be retrieved with New Generation Star (NGS) tester or a generic OBD-II scan tool. See SELF-DIAGNOSTIC SYSTEM .

Fuel tank pressure sensor sends a voltage signal to NGV module that is proportional to pressure in tank. Fuel tank pressure sensor can range from 50-4000 psi (344.75-27,580 kPa). Fuel tank temperature sensor sends a voltage signal to NGV module. When temperature increases in fuel tank, resistance at fuel temperature sensor decreases.