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2001 RAM 2500 Heat Exchanger

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Hey guys,

 

My son has a 2001 Ram 2500 and the two lines (trans. lines) that come off the bottom seep/leak consistently.  I had the idea of just removing it altogether but wanted to see what everyone's opinion is.  He does not haul anything and just drives it to and from work.  

 

My idea was to just plug the two bottom ports (trans. ports) with NPT fittings and take the line from the front of the transmission to the transmission cooler.  The output of the transmission cooler to the rear port on the transmission.  Seems to be the easiest route and not having to mess with the coolant lines from the Heat Exchanger.  He has new flexible AN lines, but just can't seem to get them to stop leaking (leaks at AN fitting).  Would it be a good idea to upgrade to a better transmission cooler other than the stock one (mishimoto or something similar)?

 

What is everyone's thought on bypassing and also the method I would like to use to bypass?

 

Thanks,

Bruce

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  • Mopar1973Man
    Mopar1973Man

    I would say leave the cooler in place just me personally. 

  • Mopar1973Man
    Mopar1973Man

    Really simple get a Trans Temp gauge ISSPro EV2 and the pick up the relay adon then adjust the trigger point for the relay in temperature say 160-180*F and then set the warning light for 200*F maybe.

  • pepsi71ocean
    pepsi71ocean

    Where are you measuring your transmission temperatures, is a good question. I see it says Ohio is where you live. In which case you would be better the keep the exchanger to raise temperatures up to a

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  • Author

OK all,

 

I think you have convinced me to keep the HE in place.  I'll work on getting it to not leak (ugh).  However, does anyone know if there are replacement (aftermarket) lines available that come out the side of the HE on a 2001?

 

Bruce

  • Author

This would be the coolant lines...

 

B

 

 

This would be what I'm looking for.  Replacement of the mess that comes off the coolant ports on the HE.

 

 

image.png

Edited by IBMobile
remove duplicate diagrams

On 1/8/2022 at 2:48 PM, BDK said:

OK all,

 

I think you have convinced me to keep the HE in place.  I'll work on getting it to not leak (ugh).  However, does anyone know if there are replacement (aftermarket) lines available that come out the side of the HE on a 2001?

 

Bruce

 

Yes, I actually just bought one for good measure, I'm in the process of replacing the cooling system in its entirety.

 

https://www.amazon.com/Replacement-3935812-1998-2002-Cummins-Transmission/dp/B078NJK53D?fbclid=IwAR1lSSExUZFR4JsQpPxHlihsAkfE2OHl6UFydDAxooOg8jEZAeNv73KSg0w

  • Author

Thanks Pepsi,

 

Are your lines ok on the coolant side.  I believe my son's will need replaced and cannot find them at a reasonable price.  IB found some but they were VERY expensive and may just need to make my own or take the old one's somewhere and have then bend new lines.

 

Bruce

11 hours ago, pepsi71ocean said:

Yes, I actually just bought one for good measure

$410?!?!?  Holy smokes.

  • Author

That's what I'm thinking Silverwolf......👍

On 1/12/2022 at 9:36 AM, BDK said:

Thanks Pepsi,

 

Are your lines ok on the coolant side.  I believe my son's will need replaced and cannot find them at a reasonable price.  IB found some but they were VERY expensive and may just need to make my own or take the old one's somewhere and have then bend new lines.

 

Bruce

 

Surprisingly they are sill in good shape, I did have to replace the output line a one point, but I bought it from the dealership. I'm not sure what is reasonable anymore haha, I just pay it if it makes sense.

 

On 1/12/2022 at 8:16 PM, LorenS said:

$410?!?!?  Holy smokes.

 

that's cheap compared to the $2,000 that they want for an OEM one!

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