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 MANUALSCHEVROLET1985C 30 P/U 2WD V6-262 4.3LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESPOSITIONSISC/NOSE-IDLE SPEED CONTROL NOSE SWITCH
1985 Chevrolet C 30 P/U 2WD V6-262 4.3L
ISC/Nose-Idle Speed Control Nose Switch
1985 Chevrolet C 30 P/U 2WD V6-262 4.3LSECTION ISC/Nose-Idle Speed Control Nose Switch
This position indicates the on or off condition of the ISC nose switch. The switch, mounted in the ISC housing is closed (on) whenever the ISC plunger is in contact with the throttle lever.
RENDER: 1.0x
NO RELATED
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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.