Ford F150 Pickup. Instruction - part 1325

NATURAL GAS VEHICLE MODULE 

Manufacturer does not provide a removal and installation procedure. 

SENSORS & SWITCHES 

FUEL RAIL PRESSURE SENSOR 

Manufacturer does not provide a removal and installation procedure. See Fig. 2 . 

FUEL RAIL TEMPERATURE SENSOR 

Manufacturer does not provide a removal and installation procedure. See Fig. 2 . 

FUEL TANK PRESSURE SENSOR 

Removal & Installation 

Perform FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEMS. Disconnect the battery ground 
cable. Raise and support the vehicle. Disconnect the fuel tank pressure sensor electrical connector (1). See Fig. 
3 . Remove the fuel tank pressure sensor (2). To install, replace the fuel tank pressure sensor and spacer "O" 
ring seals. Lubricate the fuel tank pressure sensor and spacer "O" ring seals with Super Premium 5W-30 engine 
oil prior to installation, to help seal and ease the installation. To complete installation, reverse removal 
procedure. 

NOTE:

Numbers in parenthesis refer to numbers in illustration.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 3: Removing Fuel Tank Pressure Sensor 
Courtesy of FORD MOTOR CO. 

FUEL TANK TEMPERATURE SENSOR 

Removal & Installation 

Perform FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEMS. Disconnect the battery ground 
cable. Raise and support the vehicle. Disconnect the fuel tank temperature sensor electrical connector (1). See 
Fig. 4 . Remove the fuel tank temperature sensor (2). To install, replace the fuel tank temperature sensor "O" 
ring seal. Lubricate the fuel tank temperature sensor and spacer "O" ring seals with Super Premium 5W-30 
engine oil prior to installation, to help seal and ease the installation. To complete installation, reverse removal 
procedure. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 4: Removing Fuel Tank Temperature Sensor 
Courtesy of FORD MOTOR CO. 

SOLENOIDS 

FUEL RAIL SOLENOID 

Manufacturer does not provide a removal and installation procedure. See Fig. 2 . 

FUEL TANK SOLENOID 

Removal 

1. Remove the fuel tank(s). See FUEL TANKS under FUEL SYSTEMS. 

2. Remove the retaining screws. See Fig. 5 . Remove the fuel tank solenoid valve electrical connector. 

Remove the fuel tank solenoid valve. 

CAUTION: When removing the fuel tank solenoid valve electrical connector, it is 

possible that the connector pins may disengage from the solenoid 
valve.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG

  

Fig. 5: Locating Fuel Tank Solenoid Valve Connector 
Courtesy of FORD MOTOR CO. 

Installation 

1. Replace fuel tank solenoid "O" ring seal. Lubricate the fuel tank solenoid "O" ring seal with 5W-30 

engine oil prior to installation, to help seal and ease the installation. 

2. Check the gap between the solenoid valve and the tank sealing surface in the center portion of each 

hexagonal flat with a feeler gauge. See Fig. 6 . The gap must not exceed .002" (.05 mm). The feeler 
gauge must be inserted to a depth of .06-.12" (1.6-3.1 mm) to make sure the measurement is accurate. If 
the gap exceeds the allowable limit, remove the valve, inspect the sealing surfaces, replace and lubricate 
the seal and repeat the tightening and inspection procedure.  

3. Install the electrical connector. Install the electrical connector retaining screws. Install the fuel tank(s). 

See FUEL TANKS under FUEL SYSTEMS. Perform COMPRESSED NATURAL GAS LEAK TEST
under FUEL SYSTEMS in SYSTEM & COMPONENT TESTING - CNG.  

WARNING:

The maximum gap between the solenoid valve and the fuel tank 
sealing surface must not be exceeded. If the gap is exceeded, fuel 
leakage may occur resulting in a flammable mixture, which could 
ignite and cause personal injury.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Removal & Installation - F150 Pickup - CNG