Unplugged my EBPV a few years ago and never affected my high idle when cold. Toward the end of last winter my high idle quit working. Any suggestions on where to start?

2001 F250,4x4,6spd.

 

Check to make sure your parking brake is set. Check that your clutch interlock is working as well.

After that, check your intake air temp sender...

 

Ahhhh……I failed to mention I did a DIY intake after reading your post, if I could’ve; I would have kicked myself in the nuts. I failed to reconnect the intake air sensor when I installed the DIY intake, last night I reconnected the sensor and bingo it worked this morning

Thanks