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.
Closed Throttle Position Switch
1999 Mazda 626 ES, 2.5 D, StandardSECTION Closed Throttle Position Switch
Switch detects fully closed throttle plate position and sends signal to PCM. On Millenia and 626 2.5L, closed throttle position switch is part of TP sensor, which is adjusted automatically when TP sensor is adjusted.
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.