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.
1988 Mazda 929 AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Sensor
- Disconnect throttle sensor connector. Connect an ohmmeter between throttle sensor terminals A and D. Resistance should be 3500 6500 ohms. See Figure .
- Connect ohmmeter between throttle sensor terminals B and D. Gradually open throttle valve and note resistance. With throttle valve closed, resistance should be less than 1000 ohms. With throttle valve fully open, resistance should be 3500-6500 ohms. If not within specifications, check adjustment.
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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