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 RX-7 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Testing with Green Lamp Function
- The Green lamp function on the digital code checker is used to test O2 sensor signal. Different Green light modes indicate proper or improper mixture ratios as sensed by the O2 sensor. Before testing O2 sensor, disconnect neutral switch connector. Start and run engine at idle speed. Disconnect throttle sensor connector. See Fig 2 . Digital code checker should read Code 6 with Green lamp on.
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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