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.
1982 Mazda RX-7 GSL, Automatic TransFACTORY OEM SERVICE PROCEDURE
Heat Hazard Sensor
- Turn ignition on; "Overheat Exh. System" warning light should glow. Start engine and warning light should go out. Remove passenger seat, fold back carpeting, and disconnect heat hazard sensor; warning light should glow.
- If warning light does not respond as outlined, remove and test sensor. Wrap sensor and a thermometer in aluminum foil (electrical connector must be exposed for access). Place sensor and thermometer (wrapped in aluminum foil) in container filled with oil, place a second thermometer in container of oil. See Fig 1.
- Connect a battery and test lamp to sensor connector. Test lamp should glow. Gradually heat oil. Test lamp should go out when temperature inside aluminum foil is 248-284°F (120-140°C). If sensor does not respond as outlined, replace heat hazard sensor.NOTE: Do not heat oil above 302°F (150°C).
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.