Because it runs fine, then won't restart, I am inclined to believe that is an IACV problem. The IACV is simply sticking once in a while- probably due to the cold weather and crud buildup. I would clean the IAC.
There is no reason not to investigate the PCV, check it, and repair it as needed. This is a common problem causer, and should not be overlooked any time you're having problems with the car. It will help you to know this one, and know it is repaired. It is not expensive to repair if you purchase 90 deg plastic elbows and line to build your own. A re-designed hose from Ford is available for $20.
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Moderating everything now, let me know if I can help.
Originally Posted by the user formerly known as ZX3_Chick
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