Engine/Transmission (1998.5 - 2002) Engine Temps

[hackengineering]

Juice w/attitude Engine Temp reading

I noticed this weekend while towing i am getting very conflicting gauge readings when it comes to my engine temp. I have an edge juice chip with the attitude controler. I have the Engine Temp as one of my read outs while driving. When i was pulling two trailers this weekend up the mountains i notices my original temp gauge located next to the spedo rose to nearly 220 maybe 225 while the attitude display made it to 204 and never moved and then quickly went back down once i was going down hill. My question is do these two gauges refrence two very diffrent temperatures. Like maybe one does the engine block the other is actual water. Do we know which is more reliable?

Thanks in advance.

 

[DNewell]

Where is the wiring for the Edge tapped into? If it's tapped into the same wiring as the factory temp sensor, then I would probably think it's the gauge in the truck. not too sure though...

 

[aharman]

Maybe one of the sensors is reading engine in temp, and the other is reading engine out? A temperature rise of 20F through the engine under heavy load is reasonable.