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High idle

i have a 2000 dodge durango that will idle up on its own what might be the cause? thanks

Idle speed is controlled by the computer via the Idle Air Control (IAC) valve. A dirty or sticking IAC valve, or a problem in its control circuit, can cause abnormal idle speeds.

Without knowing more about your vehicle, such as mileage, engine option, and maintenance history it’s hard to say much more.