Ran the A/C for a few minutes in stop and go traffic yesterday. Engine temp came up to about 205 F. It was hot yesterday and this is the first day it's done this. Idle was a little erratic for about ten minutes, then perfectly normal again. Going to check the basics here at lunch but wanted to get other opinions. I appreciate it.

Thanks,
Tim

 

Or should I even be concerned in an '01 with no load on it like that?

 

bet ya need to clean yer radiator ,spray some degreaser or soap on it let it sit then use the water hose inside the fan shroud ,your gonna be suprised what all comes out

 

Here is what I would do, pull the puke bottle and relocate it. Then pull the rad and throughly wash it. Here are my before and after pics. Now is a good time to flush the cooling system too.

https://www.dieseltruckresource.com/...7&ppuser=61630
https://www.dieseltruckresource.com/...6&ppuser=61630

https://www.dieseltruckresource.com/...n_fan_side.JPG
https://www.dieseltruckresource.com/...n_fan_side.JPG

I also tried to wash it without taking the rad out. You can tell by the pictures that did not work too well....

 

Mine will pull that on a hot day when I am mostly setting. I know my fan clutch is weak, rest is clean.

If cleaning the Rad. doesn't do it, check out your fan clutch.