Transmission heater unit bypass??

[Steiblerm]

By 2017 V6 ram recently filled transmission with water and I suspect it was from the unit on the side of the transmission that flows coolant to it. Is there a way to by pass or delete this all together so it doesn't happen again?

 

[crash68]

If the transmission had water in it, most likely from being submerged in/under water. Check the breather tube that comes off the top of the trans if the tube is still in place and not broken.
If ithe transmission TMU was the culprit you would have coolant in the transmission, it should have been distinguishable from water. The TMU would have been replaced.
Usually the only reported problem with the TMU is the thermal bypass acts up and the trans runs hot.
You would need to bypass the coolant piping from the TMU

 

[Steiblerm]

It wasnt underwater because it was in my garage after an engine replacement. Do you think the TMU would get water in the trans? Its being fed from somewhere because it was milky and it keeps coming out pink after flushing it again and again

 

[caulk04]

It would be worth pressure testing the coolant system and finding the leak. You could also just remove the heat exchanger from the TMU and pressure test that. I suppose you could also just remove and loop the coolant lines, if it's leaking you should end up pushing trans fluid out of the heat exchanger.

To do what you're asking, remove the heat exchanger, loop the coolant lines, drill/tap/plug the ports from the TMU-heat exchanger, remove the thermostat in the TMU.

A little work yes, but not expensive really.

 

[Steiblerm]

How do you think it's possible that coolant/water got in the transmission in such high quantity?

 

[18CrewDually]

Yes a bad cooler can cross contaminate the ATF.
Remove the cooler fill the ATF side with fluid. Pressure test the coolant side. There should be NO bubbles coming up out of the ATF ports. If there is, that's the issue.
I've seen external coolers and internal (inside of radiator) coolers fail.

 

[Wild one]

How many threads do you think you need on this subject

3.6 water in transmission after new engine

I recently had to swap out the engine in 2017 ram 3.6 the engine runs very well, but I noticed the transmission was making a weird noise so I pulled out the filler plug and white oil came out so I'm assuming the water I put in the radiator was mixing into transmission. Does anybody know how...

www.ramforum.com

 

[18CrewDually]

How many threads do you think you need on this subject

3.6 water in transmission after new engine

I recently had to swap out the engine in 2017 ram 3.6 the engine runs very well, but I noticed the transmission was making a weird noise so I pulled out the filler plug and white oil came out so I'm assuming the water I put in the radiator was mixing into transmission. Does anybody know how...

www.ramforum.com

 

[Wild one]

How do you think it's possible that coolant/water got in the transmission in such high quantity?

Start reading here,there's pics of the TMU,and there's even a pic of how i originally looped the coolant hoses together,before i broke down and replaced the heater hoses with the factory 5/6 speed heater hoses.

RevMax 8 speed thermostat bypass

I'd do exactly what I did with my Harley. Heat the thermostat up and take measurements of it when it opens up. Then make a solid plug (likely aluminum) that copies those dimensions. This way, the cooler/heater operate exactly as the factory designed it to when the trans is HOT. It would just...

www.ramforum.com