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.
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HOMESERVICE MANUALSCHEVROLET1985NOVA BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMCARBURETOR - AISAN 2-BBLTESTINGTHROTTLE POSITION SWITCH
1985 Chevrolet Nova Base, Standard
Throttle Position Switch
1985 Chevrolet Nova Base, StandardSECTION Throttle Position Switch
- Connect a tachometer to engine. Start engine and warm up to normal operating temperature. Disconnect throttle position switch connector. Connect an ohmmeter between throttle position switch connector and ground.
- Slowly raise engine speed. Check throttle position switch setting speed when ohmmeter shows continuity. Setting speed is approximately 1800 rpm. Adjust setting speed by throttle position switch adjusting screw.
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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.