Good morning,
This could be the sender unit itself which is part of the fuel pump module.
https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump
Before assuming this, I would check the connector at the fuel pump on the tank and be sure the connector is clean, tight, and no corrosion. It may be a bad connection.
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/how-to-use-a-voltmeter
Roy
WARNING: Do not smoke, carry lighted tobacco or open flame of any type when working on or near any fuel related component. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury.
CAUTION: Fuel supply lines will remain pressurized for long periods of time after engine shut down. This pressure must be relieved before servicing of the fuel system is begun. A valve is provided on the throttle body for this purpose. Remove the air cleaner and relieve system pressure by using Rotunda pressure gauge tool T80L-9974-A or equivalent and drain the system through the drain tube.
REMOVAL
1. Depressurize fuel system.
2. Remove fuel from fuel tank by pump out through filler.
3. Disconnect supply line and return line fittings and vent line at the RH and LH side rear axle frame kick-ups.
4. Disconnect fuel sender electrical connector forward of tank.
5. Remove filler neck ring clamp screws.
6. Remove fuel tank support straps and remove fuel tank.
7. Remove any dirt that has accumulated around the fuel pump attaching flange.
8. Disconnect the supply line and return line fittings and the electrical connector.
9. Turn the fuel pump locking ring counterclockwise and remove locking ring.
10. Remove fuel pump and bracket assembly.
11. Remove seal ring and discard.
INSTALLATION
Fuel Pump Removal/Installation
imageOpen In New TabZoom/Print
1. Clean the fuel pump mounting flange, the fuel tank mounting surface and seal ring groove.
2. Apply a light coating lubricant on a new seal ring to hold it in place during assembly and install in fuel ring groove.
3. Install fuel pump and bracket assembly carefully to ensure that filter is not damaged. Ensure locating keys are in keyways and seal ring remains in groove.
4. Hold pump assembly in place and install locking ring finger tight. Ensure that all locking tabs are under tank lock ring tabs.
5. Secure the fuel sending unit and pump assembly by rotating the locking ring clockwise, until the ring stops against the stop tabs.
6. Raise tank partially and install vent line and fuel tubes.
7. Install electrical connector.
8. Install fuel line fittings.
9. Install fuel tank in vehicle and tighten straps.
10. Connect fuel sender electrical connector.
11. Install filler tube and attaching screws.
12. Connect vent line.
13. Install fittings on RH and LH side of vehicle.
14. Install a minimum of 10 gallons of fuel and check for leaks.
15. With a fuel pressure gauge on schrader valve, turn the ignition switch ON/OFF for three seconds. Repeat this ON/OFF switching (5 to 10 times) until the pressure gauge shows at least 35 psi.
16. Remove pressure gauge, start engine and check for leaks.
Images (Click to make bigger)
Thursday, February 25th, 2021 AT 3:58 AM