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.
Throttle Position Sensor Learn (4.6L)
2002 Chevrolet Impala LSSECTION Throttle Position Sensor Learn (4.6L)
NOTE:
Ensure accelerator and brake pedals are free from any obstructions while performing Throttle Position (TP) sensor learn procedure. PCM will not perform learn function with accelerator pedal or brake pedal obstructions.
Turn ignition on. Wait one minute. Turn ignition off. Wait 15 seconds. PCM will now properly control idle speed.
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.