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.
Temperature Switch
Install vacuum gauge in line to distributor vacuum advance unit. With engine temperature below 65°F, observe vacuum gauge for a manifold vacuum reading. Replace temperature switch if vacuum gauge registers "O". On engines equipped with "Hot" override provision, connect hot override temperature switch connector and observe vacuum gauge. If engine temperature is above 232°F and vacuum gauge registers "O", replace hot override switch.
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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.