Recently, the check engine light came on so. Off to my friend and Ford mechanic. Sam replaced the 3 oxygen sensors-the light was still on after replacing the sensors and then I noticed the truck idling VERY rough on hot days right after start-up and while idling at a stop on hot days. Sam re-checked and said the computer was bad. He completed a COMPLETE tune-up and the rough idle problem still exists - he suggested to replace the IAC (it think that's the air control valve?) Any other suggestions or advice?
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Tuesday, April 10th, 2007 AT 10:14 AM