80* and truck goes into high idle mode???

[BradyYoung]

Leaving the fire station this morning I noticed my truck was idling close to around 1k rpm. Rolling the walmart parking lot I noticed it was still idling high, although the truck temp was well up by the and the outside temp was close to 80*. It felt like the truck was shifting funny too, but I figured that was due to the idle being off. Is this anything I need to be worried about? Has anyone else had this happen? I'm still pretty new to the 6.0 so any help is appreciated.

[Snake]

Any idea what your coolant temps were?

[dannyboy950]

Was your a/c on and did your clutch fan seem louder as well. Without knowing the temps all any of us can do would be guess. Maybe an educated guess but still just a guess. More detailed info you can give the better we could all try to help.

[BradyYoung]

my gauge wasn't reading high at all, but yesterday I had my OBDII reader plugged into it and they were staying right at 183. I turned my a/c on and off but that didn't seem to effect anything. Even thought my temp appeared to be up on my cluster, could the thermostat be stuck open therefore making my truck think it needs to be in high idle? It still wouldn't seem like it would be cold enough to trigger the sensor...

[BradyYoung]

I can only read so much with that dumb OBDII ha.

[dannyboy950]

That is the key difference between a real scan tool and a code reader.

By the way if coolant temps are below 190/195 your thermostat is stuck open.
The 6.0 thermostat is a 190/195 degree device to open.

[BradyYoung]

Ok, I just started the truck up again and now I have a code. P2285 ICP sensor. My truck is an '03 and I read that the sensor is under the turbo??? Also I replaced my FICM a few months ago and got one with the Atlas 40 tune.