Question about 2005 Kia Sorento

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2.5 diesel engine revs slow to drop when gas pedal realeased

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Check for any throttle binding. Does it snap back quickly, it should. Check for any vacuum dampers holding the throttle open. This might be because of malfunctioning control circuits to hold the throttle open for air conditioning for instance.

Good Luck

Posted on Mar 17, 2009

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Posted on Jan 02, 2017

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The IAC valve is located on the throtle body and has 4 wires to it.

Sometimes the throtle body needs to be cleaned and then reset.

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