Ninety-Eight V6-3800 3.8L Supercharged (1993)
Throttle Position Sensor: Service and Repair
Throttle Body
REMOVAL:
1.
Disconnect the TPS electrical connector.
2.
Remove the two TPS attaching screws and retainers.
3.
Remove the throttle position sensor.
INSTALLATION:
1.
With the throttle valve in the normal closed idle position, install the throttle position sensor on the throttle body assembly, making sure the TPS
pickup lever is located ABOVE the tang on the throttle actuator lever.
2.
Install the retainers and two attaching screws using thread locking compound on the screws, Loctite 262, GM Part No. 1052624, or equivalent
should be used. DO NOT tighten the screws until the TPS is adjusted.
ADJUST:
3.
Install three jumper wires between the TPS and the harness connector or use a "Scan" tool.
4.
With the ignition ON, use a digital voltmeter connected to terminals "B" and "C", adjust the TPS to obtain 0.38 - 0.42 volts (middle of the
operating range) with the throttle valve closed.
5.
Tighten the screws, then recheck the reading to ensure the adjustment has not changed.
6.
With the ignition OFF, remove the jumper wires and connect the harness to the TPS.
