Fuel Tank Pressure Sensor: Service and Repair

Fuel Tank Pressure Sensor

Fuel Tank Pressure (FTP) Sensor and Vapor Tube Assembly

NOTE: The Fuel Tank Pressure (FTP) sensor is serviced as follows:
- On pickup body vehicles the FTP (Fuel Tank Pressure) sensor is serviced with the vapor tube assembly, it is not available separately. Do not attempt to disassemble the vapor tube assembly.
- On chassis cab vehicles the FTP (Fuel Tank Pressure) sensor is located on the fuel pump module flange and is serviced with the fuel pump module only, it is not available separately. For additional information, refer to Fuel Delivery and Air Induction.

NOTE: The 142 in wheelbase vehicle shown, other wheelbase vehicles similar. The fuel tank is shown in the illustration for reference only, the fuel tank must be removed to perform this procedure.









Removal

WARNING: Always disconnect the battery ground cable at the battery when working on an evaporative emission (EVAP) system or fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

1. With the vehicle in NEUTRAL, position it on a hoist.

2. Remove the fuel tank.

3. NOTE: The spare tire must be removed to access the Evaporative Emission (EVAP) canister.
Disconnect the Fuel Tank Pressure (FTP) sensor and vapor tube assembly-to-Evaporative Emission (EVAP) canister quick connect coupling.

4. Disconnect the FTP (Fuel Tank Pressure) sensor electrical connector.

5. Detach the FTP (Fuel Tank Pressure) sensor and vapor tube assembly from the retaining clips on the chassis and remove the assembly from the vehicle.

Installation

1. NOTE: If a new Fuel Tank Pressure (FTP) sensor and vapor tube assembly is required, it will be serviced as a kit. The kit includes 3 different lengths of convolute that must be installed on the vapor tube.
If installing a new FTP (Fuel Tank Pressure) sensor and vapor tube assembly, install the 3 lengths of convolute (1) in between the marks (2) on the vapor tube. The marks on the tube indicate the position of the retaining clips when the tube is installed in the vehicle.






2. Position the FTP (Fuel Tank Pressure) sensor and vapor tube assembly in the vehicle and attach the assembly onto the retaining clips on the chassis.

3. Connect the FTP (Fuel Tank Pressure) sensor electrical connector.

4. Connect the FTP (Fuel Tank Pressure) sensor and vapor tube assembly-to-Evaporative Emission (EVAP) canister quick connect coupling.

5. Install the fuel tank.

6. Carry out the Evaporative Emission System Leak Test. For additional information, refer to Evaporative Emission System Leak Test Testing and Inspection.