sounds like the butterfly valve, or IAC. idle air control? yeah, if tat thing is dirty inside or u gots a leak, then it'll affect ur idling and ur gas mileage too. i remember this cos i helped replace that butterfly valve on a crown vic. if the sensor or motor is out on the butterfly valve, i think there is no part for tat. u might have to buy the whole butterfly valve. but clean it up and see if it fixes the problem first.
2005 F-350 PSD 6.0 KING RANCH 4X4 DRW
Ravelco, Updated HFCM Plug, ScanGauge II, Blue Spring, Sinister Diesel Coolant Filter & Intake Elbow, Updated STC, SP & DP, Upgraded FICM (6/14/12), PMM EGR Delete (5/13/13), Updated Turbo Oil Line & Drainpipe, Shell ELC, Bilstein 5100 Shocks, Steering Stabilizer & Front Coils, Moog Ball Joints, Magnefine P.S. Filter, Jimmi Jammers, Fumoto, Riffraff Boots, 08 Mirrors, Hellwig, Mag-Hytec Front
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