Identify My Hoes!

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00'BlueSteel

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Was swapping out the dipstick tube and seal today and found these 2 rubber lines with plugs in them, one plug seems to be broken and fluid is leaking out. I think this is my leak, not the dipstick tube, cause the tube is fine and the seal I took out looked good as well.

Who knows what the 2 hoses with caps circled in red go to and if they should be capped or connected to something?8879C1FF-53CD-4111-A38E-050F823CFAD1.jpeg
 
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00'BlueSteel

00'BlueSteel

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Look like vents for something. Maybe emissions or diff?

I agree they are vents, I think they are the transfer case and transmission vent. I found them laying on top of the bellhousing behind the transmission’s dip stick tube. Something must be overfilled if it is leaking out of the vent. I think that’s where my highway speed leak is coming from, transmission and transfer case reach higher pressure at 65/70mph and push fluid out the vent? Sounds wonky, seems like it would come out the overflow line that goes out the back not out the vent?
 
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00'BlueSteel

00'BlueSteel

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Found this diagram, I am positive these are the 2 vent lines I found.
Now why is there fluid coming out of one of them?

AC738C72-E1C2-468C-9AD7-874AC9FF496C.jpeg
 

Tonyrodz

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Overfilled maybe? Is there some kind of filter inline somewhere? If so, maybe it's saturated? Maybe it's getting pressurized too much? I'm just throwing guesses out.
 
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00'BlueSteel

00'BlueSteel

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Overfilled maybe? Is there some kind of filter inline somewhere? If so, maybe it's saturated? Maybe it's getting pressurized too much? I'm just throwing guesses out.

I appreciate the extra guesses, that’s all I am doing right now.

The shop that rebuilt it did overfill it, I thought I had got it back to the right level but it is still over by a little bit, I am taking out the extra now.

I did find where people say that these transmission will do this when spun above 5600rpms, which is right where my shift is set at, I need to go do a pull and see if it indeed shifts right at 5600 or goes a little over. Every time I have noticed the leak it is right after I either get on the highway, which I usually do a WOT down the on ramps or hard full throttle down shifts passing people on the highway. Seems like it is a combination of overfilled, higher shift point spinning the transmission faster then it likes, and the added heat and expansion of the fluid at highway speeds.
 

swathdiver

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What's coming out, trans or diff fluid? Does your diff take trans fluid like the GMT900s? It's possible the seal between the two is leaking or weeping.
 

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