Archived what is a IAT

[msmithac]

what does the IAT sensor do or stand for, and where is it located on the engine

I have a 98. 5 dually 3500 at with 275 injectors

 

[BarryG]

IAT =intake air temp



Purpose-= it keeps track of the air temp in the intake and uses that for the grid heaters (the grids may use the battery temp sensor) and vp 44 timing I think. It probably provides input for some other things as well but not sure. Many have reported that a dirty sensor can adversely affect fuel mileage. If you do a search on it I think you will come up with several threads on how to clean it and check for proper voltages



On my 01 it is the farthest back plug on the drivers side rear of the engine. Past the lift pump are 2 plugs first one is the map and the farthest one back is the IAT.

 

[kboettcher]

Check out number 7 on the picture here

 

[msmithac]

what is IAT

thanks guys... ... found it at the *******

 

[kboettcher]

don't know what happened there ... . didn't like my hyperlink

try copy paste this http://dodgeram.org/tech/dsl/mt_2_feb98/fuel_sys_comp.htm