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.

2003 Pontiac Sunfire StandardFACTORY OEM SERVICE PROCEDURE

Throttle Position (TP) Sensor

NOTE: TP sensor is not adjustable. For further testing procedures, perform TP sensor related diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 2.2L ALERO, CAVALIER, GRAND AM & SUNFIRE - GASOLINE article.

TP SENSOR SPECIFICATIONS

Application

⁽¹⁾ Specification

All Models

⁽²⁾

⁽¹⁾	Range is from idle to wide open throttle.

⁽²⁾	PCM computes the throttle position (TP) from the TP sensor voltage input. The TP angle will auto zero to zero percent at idle when the TP voltage is below 0.90 volt. The TP angle will read 100 percent at wide open throttle.

Factory Service Tools

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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.