Ford 5.0 TPS Calibration Kit Instructions - Throttle Position Sensor Adjustment

This document is the first page of instructions for a Ford TPS (Throttle Position Sensor) Calibration Kit. It explains that the TPS is a rotary-potentiometer device mounted on the bottom of the throttle body that sends a voltage signal to the EEC computer indicating throttle position and rate of change. Per Ford service literature (referencing the 5.0 / "five-ohs" engine), the TPS signal ranges from .6 to 4.585 volts, with the low value at closed throttle and the high value at wide-open throttle. With the key on and engine off, the sensor should read .85-1 volt; an idle reading of .98-1 volt is desirable for performance service, and a 1-volt idle setting yields 4.6-4.8 volts at wide-open throttle. Adjustment involves loosening the two mounting screws and rotating the sensor; the meter's positive lead connects to the green wire and the negative to the black wire. Sensor mounting holes may need elongation to reach the desired reading, and TPS voltage should be rechecked whenever idle is adjusted. Numbered steps 1-4 (visible) cover installing the jumper harness inline with the factory TPS wiring, warming the engine, disconnecting the Idle Air Control (IAC) solenoid, and setting idle with the throttle-stop screw. Step 5 is cut off at the bottom of the scan.