Just going to through this one out there because of the really frigid temps this winter and the problems with frozen moisture in the crankcase vent system including the crank vent valve, in December I had similar symptoms with no flashing or steady cel on a 3.0 and this included a 1,000 rpm idle at times until the engine hit operating temp, my remedy was a new crank vent valve with no issues.
I know I'm comparing a non aspirated engine to an aspirated one but the same rule applies with the vent system and vacuum where as my issues included a intermittent cold higher idle.
Yeah that's a good point it is single digits at night here.
Yep same here along with many days with temps in the teens and its and its been two months of this so far, many short trips over a long period of time exacerbate this problem and a good long highway drive can clear it up to a certain point.
Last edited by jcman; 02-17-2014 at 12:52 PM.
Reason: spelling correction