Help Needed Tranny Over Heated

[Tbar]

We are in the high country this weekend. Yesterday the wife and I were running some logging roads between 10-11,000 feet when my transmission temp hit 225 degrees and had to pull over to let it cool. Don't know what caused it......

Stopped up cooler?
Lugging the engine?
Fan not turning fast enough?

I thought locking up my t/c would prevent this.

I am running synthetics so I am not concerned about damage but want to prevent a reoccurance.


Tbar

 

[BIG JOE]

I'm think'n Thin air T. At those altitudes everything works a little harder (?), with less air movement through the tranny cooler, even with the fan kicking in.

Maybe just keep an eye on things when you get back down off the "High Country" ?

Joe

 

[JLDickmon]

I'm gonna go with Big Joe on this one, too.
12,000 feet is considered "oxygen" level..

heck, Bandimere Speedway above Denver is only 5,500 feet, and look at the trouble it causes the top fuel guys...

 

[majek5]

Prolly not moving real fast on those roads=not much air through the cooler. Plus the air that was going through is thin.

 

[Tail_Gunner]

I was pretty much thinking along the lines of the previous statements, altitude & lack of air flow.

 

[NevrKnow]

Stumped here but I will throw this into the hat. Tranny bypass valve maybe? Just a thought.

 

[rammertide07]

At what temp do you need to be worried on the tranny temp gauge?

 

[RandyH]

Didn't see that you were pulling anything when if started getting hot, but an upgrade to the 6.0L trans cooler would probably help. It made a world of difference whenever I pulled my 5er up to 10K-11K here in Colorado with my old '99 7.3. Afer the upgrade, it rarely went over 190 pulling about 12K slowly up the dirt roads.

 

[trackspeeder]

We are in the high country this weekend. Yesterday the wife and I were running some logging roads between 10-11,000 feet when my transmission temp hit 225 degrees and had to pull over to let it cool. Don't know what caused it......

Stopped up cooler?
Lugging the engine?
Fan not turning fast enough?

I thought locking up my t/c would prevent this.

I am running synthetics so I am not concerned about damage but want to prevent a reoccurance.


Tbar

Lugging the engine with the converter locked will send the tranny temp through the roof.

A bigger cooler if you don't have one. Let the converter unlock at slow speeds.

 

[JRJ04]

x2 on the 6.0 cooler. it made a diff of 30-40* in mine.