How to Replace an F150 Speed Sensor

The vehicle speed sensor (VSS) in a Ford F-150 is located on the rear section of the transmission. When the vehicle is running it produces a pulsing voltage that quickens or slows proportional to the speed of the vehicle. This information is sent to the power-train control module, the vehicle's main computer, where it is used to manage engine functions, such as fuel delivery and transmission shift control. Replacing the VSS in an F-150 is simple and straightforward.

Step 1 - Park the vehicle on level ground and turn off the engine. Raise the F150 with a jack, and lower it securely onto jack stands.

Step 2 - Locate the VSS mounted to the side of the transmission case.

Step 3 - Disconnect the electrical connector by pulling it out of the fitting.

Step 4 - Remove the retaining bolt with a socket wrench, and withdraw the VSS from the transmission.

Push the new VSS into the transmission, then replace and tighten the retaining bolt. Replace the electrical connector by pushing it into the fitting.

THINGS YOU'LL NEED: Jack, Jack stands, Socket set, Replacement sensor

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