OBD2 information overload.. not sure if I should be worried?

[GO0BER]

Hey all,

I just access to my first 'big kid OBD2 reader'.. its from a friend and I was able to borrow it for the weekend. Looking at data I have never been able to see before (or rather.. seeing it in a different format) was quite interesting..
First.. I noticed my cooling is not as 'done' as I thought it was.. I am still pushing 215 degrees or so when I should be 210 ish.. I didn't see if it ever went above that.. but what caught my eye was the engine load percent. I thought it was weird to have 40ish % engine load at idle (in park/neutral I was ~34%).. so I got on the forum here and found that items such as MAF and Intake Air Temp can alter this reading.. so I took my MAF out, cleaned it.. nothing.. went and bought a new one and my idle smoothed out quite a bit (I didn't even realize it was rough) but my load % is still very high.
Now I am in Arizona and my ambient temperature is definitely more than some other places.. today was ~104, my ECU says ambient temps were ~90, but my IAT was ~180 while sitting in my yard idling.. Does this seem normal? Should I be worried about the engine load %?
I checked my 02 suburban and that has the 5.3 (compared to the 6.0 in the yukon) and that read engine load % of 2.5%..
Anything else I should check since the MAF (and by default the IAT being in 1) replacement did nothing?

New item by Clint Hecht

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[swathdiver]

My engine load at idle is about 28%. IATs get hot when idling in place, that's normal. Air that hot will certainly affect the performance of the motor and its idle percentage.

 

[Foggy]

You are pretty normal there... The IAT should drop down as soon as you start moving...
Mine hang around 110-120 sitting still on a 90* day... So about 20* over ambient...
You might want to check how your air filter box is sealed ( or lack of) to the inner fender where
it gets it cooler air from outside the engine compartment

 

[GO0BER]

You are pretty normal there... The IAT should drop down as soon as you start moving...
Mine hang around 110-120 sitting still on a 90* day... So about 20* over ambient...
You might want to check how your air filter box is sealed ( or lack of) to the inner fender where
it gets it cooler air from outside the engine compartment

Mine don't ever stabalize... continues to rise to 180+.. though I did just have a CEL pop on for efficiency in bank 1 and 2 (most likely bad cats... SUCK!).. I can pretty much promise they are cats because I have already done maint on all other possible causes (head gaskets, exhaust gaskets, intake gasket, plugs, wires, etc)..
I am assuming when I sealed up the exhaust manifolds this past week and the engine is now forcing all exhaust where it belongs, a problematic cat from the previous owner is starting to show.. hesitation on acceleration, low power feeling, and I am starting to overheat at idle almost immediately again.. Guage starts ticking up within ~30 seconds of stopping at a light. And the ENTIRE cooling system is all brand new.. so I am trying to chase down cats atm.