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· /) ^3^(\ <- SO AWESOME!!
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It might be your IACV (idle air control valve). They're known to stick. I just unscrewed mine from my throttle body, pulled the gasket off and cleaned it with brake cleaner. Reassembled everything, put the gasket back on and screwed it back onto the throttlebody.

Option 2 is to get one of those IACV block-off plates.
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