When I start the truck in the morning it idles at about 650 rpm, after 3-5 minutes the idle jumps to 1000 rpm, so I get in put it in drive and it goes back down. Went and bought bagles this morning and as i was waiting at the drive through to get them the truck did it again, was idling at 1000 rpm after a few minutes.

Is this normal?

 

It is the automatic high idle that comes on under 32* F. Enjoy!

 

Yeah and sometimes when it's really cold it'll just automatically idle up to 1000 soon as you start it up.

 

Well its 20* F right now here in SLC, makes sense, tyvm