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 MANUALSCHEVROLET1982S10,T10 P/U,BLAZER V6-173 2.8LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSIDLE/THROTTLE SPEED CONTROL UNITDESCRIPTION AND OPERATION

1982 Chevrolet S10,T10 P/U,Blazer V6-173 2.8L

Idle/Throttle Speed Control Unit: Description and Operation

1982 Chevrolet S10,T10 P/U,Blazer V6-173 2.8LSECTION Description and Operation

The ISC assembly controls engine idle speed according to ECM programming.

When the throttle lever rests against the ISC plunger, the ISC acts as a dashpot on throttle closing per second.

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.