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.
1998 Mazda 626 DX, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Position (TP) Sensor Continuity: Adjustment
- Turn ignition off. Ensure throttle valve is in closed position. Disconnect TP sensor connector. Connect ohmmeter between terminals "C" and "D" of TP sensor connector. See Fig 1 -Fig 3 . Insert a feeler gauge of specified thickness between throttle lever and throttle stop screw. See TP SENSOR CONTINUITY (MILLENIA, MPV & 626 2.5L) .
- Loosen TP sensor screws. Rotate TP sensor until ohmmeter indicates continuity as specified. See TP SENSOR CONTINUITY (MILLENIA, MPV & 626 2.5L) . Tighten TP sensor screws. Open throttle valve fully a few times. Recheck TP sensor adjustment. If TP sensor is not adjusted as specified, replace TP sensor.
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.