Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
V6 Throttle Position Sensor
Throttle Position Sensor (TPS) can be adjusted using "Scan" tester or the following procedure.
1) Ensure engine is at normal operating temperature. Install 3 jumper wires between TPS and TPS wiring harness connector.
2) Turn ignition on with engine off. Connect a DVOM to Dark Blue and Black wire terminals. With throttle at closed position, adjust TPS to obtain specified voltage. See TPS ADJUSTMENT VOLTAGE table.
3) Tighten screws and recheck readings. Turn ignition off. Remove jumper wires and reconnect harness connector to TPS.
| Application | (1) Voltage | |||||
|---|---|---|---|---|---|---|
| 3.1L (VIN T) | ||||||
| Cavalier, Sunbird & 6000 | (2) .29-4.8 | |||||
| All Others | (2) .50-4.8 | |||||
| 3.3L (VIN N) | .33-.46 | |||||
| 3.4L (VIN X) | (2) .50-4.8 | |||||
| 3.8L (VIN C & L) | .33-.46 | |||||
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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.