"F I V E D L DGY TPS CALIBRATION KIT The throttle position sensor (TPS) is housed on the bottom of the throttle body' This rotarypotentiometerbased device Sends a voltage signal to the EEC to indicate the position (and rate of Change Of position) of the throttle shaft. Ford Service literature shows that a five-ohss throttle position sensors signals range bEtWeen .6 and 4.585 volts, the lower number indicating that the throttle is closed and the higher signaling wideopen throttle With the engine off and the lgmtloh key switched on , a digital voltmeter connected across the sensor8 wires should read .85-1 volt. At idle, a reading of .981 volt is considered desirable for Performance service. A TPS setting of 1 volt at idle produces 4.64.8 VOl'iS at wrde open throttle Adjustment involves loosening the pair of screws that attach the SENSOF to the throttle housing and rotating the sensor until the meter reading is corrected. The meter's positive connects to the sensors green wire and the negative lead goes to the black wire. Due to variations in production eqmpment. the holes in the sensor housing may require elongation before it becomes . possible to obtain the desired reading_ TPS voltage shouid be checked anytime engine idle is adjusted. The following steps must be completed 1 Ofdel' Connect the jumper harness inline with your factory TPS wiring. (Figure 1) 1. 2. Start engine and get to operating temperature. 3 Disconnect Idle Air Control Solenoid (lAC). if engine stalls, turn throttle-stop screw in one full turn and restart. (Figure 2 Item 11) 4. Set idle using throttle stop. Idle speed will vary depending upon modifications made to the engine. Set to where you are comfortable with idle speed. 5. Set TPS anywhere from .96 to .98 volts. This is done by loosening the mounting screws, and lightly rotating the TPS. if you can not obtain the desired range. you may need to make the mounting holes slightly larger. This is done by drilling them. 6. Stop engine. Disconnect negative terminal battery cable for 15-20 minutes. You may wish to tap the brakes or turn the headlight on and off a few times as this will help to ensure that you have purged any remaining electrical current from the vehicle. This will reset the computer to factory defaults. 7. Remove jumper harness and reconnect factory TPS wiring. 8. Reconnect lAC Solenoid. 9. Reconnect battery cable to negative terminal. 10. Restart engine 11.lf problem persists, inspect for mass air meter problems and possible vacuum