Firebird V6-173 2.8L VIN L 2-bbl HP (1983)
Throttle Position Sensor: Adjustments
Fig. 29 Throttle Position Sensor (TPS) adjustment specifications. E2SE Carburetor
Do not remove plug sealing TPS adjustment or adjust TPS unless carburetor is overhauled or ``Computer Command Control (C3)'' system diagnosis
indicates a problem with the sensor.
1. Using a 5/64 inch drill, make a hole in TPS adjustment screw hole plug. Use caution to prevent damaging TPS adjustment screw.
2. Using suitable slide hammer, remove plug from hole.
3. Disconnect TPS connector, then using suitable wires, jumper all three terminals.
4. Connect digital ohmmeter J-29125-A or equivalent to TPS connector center terminal (B) to bottom terminal (C).
5. With ignition On and engine not running, turn TPS screw with suitable screwdriver to obtain specified TPS idle voltage, Fig. 29.
6. Turn ignition Off, then install new plug over TPS adjustment hole.
