Throttle Position Sensor: Description and Operation

1996 Chevrolet G 30 Van V8-5.7L VIN RSECTION Description and Operation

Diagram:






The non-adjustable Throttle Position (TP) sensor is mounted on the throttle body assembly opposite the throttle lever. The TP sensor senses the throttle valve angle and relays that information to the VCM. Knowledge of throttle angle is one of the inputs needed by the VCM to generate the required injector control signals (pulses). For further information on replacement, refer to TP Sensor. Service and Repair

Legend
(1) Throttle Body Assembly.
(2) IAC Valve Assembly 0-ring.
(3) IAC Valve Assembly Attaching Screw.
(4) Idle Air Control (IAC) Valve Assembly.
(5) TP Sensor 0-ring
(6) Throttle Position (TP) Sensor.
(7) TP Sensor Attaching Screw.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.