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 MANUALSCHEVROLET1986C 10 P/U 2WD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESPOSITIONSAIR SWITCH-AIR CONTROL SOLENOID
1986 Chevrolet C 10 P/U 2WD V8-350 5.7L
Air Switch-Air Control Solenoid
1986 Chevrolet C 10 P/U 2WD V8-350 5.7LSECTION Air Switch-Air Control Solenoid
This switch can be used to check for proper operation of the AIR system by directing air to the exhaust ports to test effect on readings such as the O2 sensor voltage or MC solenoid dwell. When activated, the solenoid remains energized for up to 20 seconds. After 20 seconds, a timer energizes the solenoid to prevent heat damage to the catalytic converter.
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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.