TPS Adjustment Procedure - 4.0 Liter Engine With Manual Transmission
1. Turn the ignition switch to the "ON" position.
2. Do not remove the electrical connector from the TPS. Connect the positive lead of the voltmeter to terminal A and the negative lead to terminal B of the TPS connector (Figure 1). The leads must be inserted through the back of the connector to make contact with the terminals. The terminal identification letters are molded into the connector.
3. with the throttle plate in the closed position, note the "input" voltage. It should be approximately 5.0 volts.
4. Remove the voltmeter positive lead from terminal A and connect it to terminal C. The "output" voltage should be 0.8 volt (16% of input voltage). If this is not the case, continue with this procedure.
5. Adjust output voltage as follows: with the voltmeter leads still attached, carefully loosen the sensor mounting screws and slowly rotate the sensor until the output reading is 0.8 volt with the throttle closed. Then, tighten the sensor mounting screws securely. Be sure not to disturb the sensor's position while tightening the screws. Adjustment is now complete.
Group W Bench