Hot trans temp

[jimdritru]

Just installed trans temp guage and took a ride. Temps were pegged at 250! Sensor installed on side of trans. Tranny has about 40k on it, a sonnax shift kit, and a magnefine inline trans filter. The pan feels hot, the stock cooler feels warm. What am I missing here? Is there some kind of bypass valve that is failing? Any ideas? Thanks

[JSchuricht]

Check the fluid to see if it's burned. I am guessing that it is fine and you have a issue with the gauge not getting ground or even just a faulty gauge. Does the gauge gradually go up to 250 or does it just jump right up there?

[jimdritru]

Guage temp goes up gradually and fluid isn't burnt- nice red color. I have been reading up on this bypass valve. I am wondering because of having the shift kit with raised pressures if the bypass isn't allowing full flow up to cooler??? I also have a magnefine filter that I was thinking might restrict flow also. The cooler is warm-not hot like the pan.

[jesilvas]

What do you mean by hot pan? It's a subjective term.
The shift kit will not mess with the bypass.
You never said if the gauge just goes right up to pegged out out is gradual.
if it's gradual, then does it rise even with just key on engine off?

I made my Samsung SGH-I997 send this.

[1Dieselman]

I would pull the magnafine filter out. The shop that built my trans said they don't like to use them because they can severely restrict flow.

[CT Performance, Inc.]

10-4...

You can also upgrade to SD lines..3/8"

Install a trucooler max long on the back of the bumper..get rid of the stocker.

[jesilvas]

Originally Posted by 1Dieselman

I would pull the magnafine filter out. The shop that built my trans said they don't like to use them because they can severely restrict flow.

Unless they have differrnt kinds, they are designed to keep flow going.
Before you go spending money or trying to fix something that isn't broken, verify the temp.

I made my Samsung SGH-I997 send this.

[jimdritru]

Figured it out- there are 2 grounds on back of guage. 1 for light and 1 for guage. I forgot to hook up the ground for the guage. I hooked it up and temps are running around 160* empty and stock cooler. I am picking up a 6.0 cooler for $50 today- couldn't pass it up. Any write ups on an OBS install?

[jesilvas]

Dang, awesome. I'd be sure to flush it out good first.