1997 Ford F150 4.6L Change Oil Sending Unit
The oil pressure sending unit in a Ford F-150 controls the oil gauge on the pickup truck's instrument panel. This component is located near the oil filter. When the truck's engine is running, the oil pump sends oil through the sending unit, where the pressure of the oil activates electrical contacts that relay data to the oil pressure gauge. Replacing the oil pressure sending unit is a straightforward job that requires just a few common tools.
 Tools Used
|Open end wrench set|
|Oil drain container|
 Change Oil Sending Unit
Loosen the lug nuts on the front driver's side wheel with a tire iron. Raise the front of the F-150 with a jack, then place it securely on jack stands. Remove the lug nuts and the wheel.
Locate the oil sending unit under the driver's side of the vehicle, next to the oil filter. Remove the electrical connectors from the sending unit by pushing in the tab, and pulling the connector out of the fitting.
Place an oil drain pan under the sending unit; then carefully loosen the unit by turning it counter clockwise with an open ended wrench. When the unit is loose, continue to remove it by hand. Catch any spilled oil in the drain pan.
Wrap Teflon tape around the threads of the new sending unit in a clockwise direction.
Install the sending unit into the oil pan, and turn it clockwise by hand. When the unit is hand tight, turn it a quarter turn more with the open ended wrench. Do not over-tighten the unit. Push the electrical connector into the unit.
Turn the engine on. With the engine running, check around the unit for oil leaks. Check the oil pressure gauge also, to make sure the unit is operating correctly. Turn the engine off.
Replace the wheel, and lower the vehicle to the ground. Tighten the lug nuts evenly to 100 ft-lbs.