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.
1986 Mazda 626 BaseFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor
- Unplug electrical connector from sensor. Insert a .016" (.40 mm) feeler gauge between throttle lever and throttle adjusting screw. Using an ohmmeter, check that continuity is present between terminals "B" and "D". If continuity is not present, loosen sensor mounting screws. Turn sensor until continuity is present.
- Replace feeler gauge with .022" (.55 mm) gauge and check that there is no continuity between terminals "B" and "D". If continuity is present, loosen sensor mounting screws. Turn sensor until continuity is not present.
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.
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