Idle RPM Question
OK, so I am sure this has been covered before, but after searching, I came up empty on my particular issue.
When I start my truck when it is cold out (30's-40's), no matter what the engine temperature is, the truck idles at around 1200RPM's for about 1 minute, then settles down to like 1000 for a minute or two, and then settles in to its normal idle speed of 750 or so after 3-4 mintes. It doesn't matter if the truck is cold or not, it still does it. If the truck is warm, then it takes less time for it to settle in to its normal RPM.
After the truck has been running, idle is fine.
Is this normal?
Thanks for your help.