transmission cooler lines - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

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post #1 of 3 Old 08-22-2009, 07:22 AM Thread Starter
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transmission cooler lines

I have a 2001 ram 1500 4x4 5.2 liter. The transmission lines did not run through the radiator, they went to an auxiliary cooler only.My transmission burned up and the dealer did'nt understand why it only had the auxiliary cooler.I have taken it to a transmission shop and they said they had never seen this.I have looked at another two wheel drive truck and it was the same way.Why would Dodge only use the auxiliary cooler and not run it through the radiator?I had to replace my radiator and the new one comes with the line hookups for the transmission lines.I need to know if the line from the pump goes to the top or bottom of the radiator before it goes to the the cooler and then back to the transmission.Does anyone know if this will help keep the tranny fluid cooler?I My truck has the tow package on it,I believe that dodge installed a radiator for a manual shift in this truck from the factory.
Thanks for any help with this.
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post #2 of 3 Old 08-22-2009, 09:08 PM
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The line from the front of the trans (and check ball) goes to the bottom on the radiator.
Does this help? (pay no attention to the aux cooler hook up)

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post #3 of 3 Old 08-27-2009, 06:05 PM
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i had to study the picture for a while just to learn. thats a unique set up for a trans cooler. someones been doing some work. the cooler set up you run flows in parallel. this causes the fluid to run for the path of least resistance. is it the heat exchange on the rad or the cooler that flows better? to do it this way also increases flow. how well do you think it works for you? most rebuild shops exempt the rad heat exchange to cool better. i run my heat exchange to lower crank case oil temps. my trans cost me $2500 for the HD rebuild and i'm very interested in conserving it! originaly the trans exterior lines run in sequence. the hotter side being the check ball side. was it supposed to go in the bottom of the heat exchange first then to the cooler then back to the trany? i hear alot about your advice and respect your opinions. thanx
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