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 (TP) Sensor
Throttle Position (TP) sensor is located on side of throttle body. TP sensor delivers an input signal indicating throttle valve opening angle to Engine Control Module (ECM). Voltage signal to ECM increases as throttle opening increases. With throttle fully closed, ECM should receive a voltage signal of about .7 volt. With throttle wide open, voltage signal should be about 2.7-5.2 volts. ECM uses this input signal for adjusting air/fuel mixture, power increase correction and fuel cut-off operation.
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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.