Here I am

Engine/Transmission (1998.5 - 2002) Need AIT education from you old and wise ones.

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2nd Gen Non-Engine/Transmission Bed Covering

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I never even new Air Intake Temps could be an issue until I installed the Edge J/A for my 24v.



The reason I started paying attention to it is due to a problem a lot of 24v folks seem to have.



Here's the problem; I have suttle miss under acceleration. Typically when I'm already cruising down the freeway at 60-80 mph and go to pass. as i accelerate, it will miss a bit but once i'm up to the desired speed the miss goes away.



Here's the confusing part; if i'm at a stop and take off, regardless of how hard i take off or what rpm, the miss never occurs. no matter how hard i try. but like i said, if i'm already cruising, i get the miss.



it's done it with the banks ottomind and now its doing it with the edge.



it's done it with the stock injectors and now with the f1 1. 6 injectors.



my next step was sensors but i've read thread after thread about this problem with all sorts of setups and folks who went through their sensors with zero luck.



quick note; the miss feels real similar to when the edge defuels due to my set egt and boost limits.



don't know if that tells me any thing but was thinking the stocker computer could be defueling for some reason and the only thing monitored that i don't know how to read is AIT.



my Air Temps as per the edge seem to stay above 100*, even right after start up, and rarely go above 125. i would expect a bigger range of temps from cold to 37lbs of boost.



finally the questions;



1. what are normal AIT to include thr whole range?

2. does the stock ecm defuel for AIT, too high or too low?



chew on that cr@p for me.



take care, jeff
 
I was trying to chase down a smoke problem on my truck and in the process of isolating the IAT sensor I wired a 10K ohm potentiometer in parallel with the IAT. This would allow me to 'dial-a-temp' anywhere from 80* to 180* from inside the cab. I saw no difference in visible smoke regardless of where the IAT was set. I felt no SOP difference in performance regardless of where the IAT was set.



My smoke problem turned out to be the MAP.



I would expect the temps inside the manifold to remain relatively constant - that's what the intercooler is for - at least until you drive the turbo out of its efficiency map.



I would expect to see a jump in temps if you turned on the AC since the condensor is in front of the intercooler.



Get a new IAT for peace of mind if you think yours is bad - about $35 down at your local Cummins shop.
 
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