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 MANUALSHYUNDAI1991SONATA V6-3.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE FULL CLOSE SWITCHDESCRIPTION AND OPERATION
1991 Hyundai Sonata V6-3.0L
Throttle Full Close Switch: Description and Operation
1991 Hyundai Sonata V6-3.0LSECTION Description and Operation
Idle Switch:
The Idle Switch, which is a contact type switch, senses accelerator operation. The switch is installed on the throttle body. When the throttle valve is in the idle position, the free lever pushes the push-pin to turn on the contact.
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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.