Idle issues? Is this normal?!?

[tag187]

I have a 2000 F250 with a 6 Speed manual when the tempature outside is cold and I have the heater running the Idle jumps to just over 1000 RPM and holds there for a few minutes then back to normal Idle then a Few minutes later jumps again. If I press the clutch or the break pedal it also causes it to drop down again. Is this normal or not? I am new to diesel trucks, any info please?

[monster energy]

Ive got the 06 6.0 and when it is cold out it kicks to high idle and when you put your foot on the brake it drops back down after a bit it will go back up. sounds normal to me

[Barrie in Maine]

That is the ebpv and computer trying to warm up your engine. Mine does it all the time in the winter. With muffler delete it will sound like a jet taking off. ha ha

[DKR]

I know the 05 and newer (maybe earlier years too) have a computer comtrolled high idle that bumps to 1000 in the right temp range. Totally normal.

[tag187]

Thanks guys, I was kinda worried there for a bit, glad to know I dont have any problem.