Wandering Idle when cold

Recently I have started having issues with my idle when the engine is first started. It will hunt for 30-60 seconds with the variance between the high and low decreasing as time goes on. When I first start it I will sometimes go as high as 1500rpm and then settle down to about 850, then up again but not as high and then back down, this goes on for about a minute or less then it settles out at 860. As winter is now getting closer I am organizing all of the things I want to do this winter and getting rid of this will be at the top of the list. So, what would be a logical sequence of things to check to ferret out this issue?

bob

i thought that was normal

Mine's got the wiggly idle issue too. It's normal. Sometimes it gets the 2000 tantrum.

And if it rains... mine goes nuts for a few days.

Finally, after 5 years it is starting to act normal!!!

Well, this winter is coming quick, I am doing valves, and will do all the other maintenance required around 20K miles, I'll see what happens.

bob

Mine is sounding mean since I dropped Nels tune in mine from the resource section.