Auto Trans Cooler Advice Needed?

[CCooper]

Hi everyone,

I am a new member and this is my 1st post. I have to replace an external auto trans cooler on my wife’s 93 2500 truck. The previous owner had it plastic tied to the radiator core. Just replaced radiator because of it. For the replace I think I will use the new B&M cooler with the 9. 5 in. fan and t-stat on it. I plan on mounting it under the truck somewhere and using hydraulic hose for the connections. The truck has the dealer installed cooler under the bed and the original heat exchanger on the engine. I would like an opinion on my set up and the best way to plumb it. Should it all be in series or should the coolers be in parallel? I want to add a trans temp gage now as well. Summit Racing has the best price I have found: $210 for the cooler and $47 for the gauge. Someday it will also get a pryo and a tach as well, but one thing at a time.



Thanks in advance for anyone’s help. The info you folks provide on this site is great.



C Cooper

 

[Philip]

If your orginal and the factory addon are good. I would just drop the third one out and don't even worry about it.



In cold weather with that third one you might not get the trans up to proper operating temps.





Welcome to the TDR.

 

[JKeith]

If it were me, I would install the temp. gauge first. Then see if you any more cooling. I towed a 16k trailer with 3:54 gears, and had no trans heat problems. But the rear axel ran hot.

 

[tugboatphil]

I had the aux cooler behind the fuel tank. The hoses were routed behind the tank and against the frame. Two summers ago, I got a pinhole leak where it had chaffed against the frame. Check out the hose and make sure it's in good shape. Mine is routed to the grill cooler, then to the aux and back to the transmission.



Welcome Aboard!!

 

[DBF]

Hi everyone,

I am a new member and this is my 1st post. I have to replace an external auto trans cooler on my wife’s 93 2500 truck. The previous owner had it plastic tied to the radiator core. Just replaced radiator because of it. For the replace I think I will use the new B&M cooler with the 9. 5 in. fan and t-stat on it. I plan on mounting it under the truck somewhere and using hydraulic hose for the connections. The truck has the dealer installed cooler under the bed and the original heat exchanger on the engine. I would like an opinion on my set up and the best way to plumb it. Should it all be in series or should the coolers be in parallel? I want to add a trans temp gage now as well. Summit Racing has the best price I have found: $210 for the cooler and $47 for the gauge. Someday it will also get a pryo and a tach as well, but one thing at a time.



Thanks in advance for anyone’s help. The info you folks provide on this site is great.



C Cooper

Welcome to our sometimes-odd world.



I've towed a small fifth-wheel trailer (7500#) all over helengone with just the installed mini-cooler above the radiator and the SuperDuty cooler under the bed. Maybe the PO was towing real heavy up & down Monarch Pass or somesuch and felt he had to have more cooling. Also sounds like he poked the pooch on the install.



If you're not going to tow or going to tow light loads like mine, dump the add-on cooler and go back to normal. DO install the gages. Then watch the gages and install something more in series if needed.



Regards, DBF

 

[CCooper]

Thanks for the responses. I will install the temp gauge 1st and see what is happening before proceeding with cooler. I should have stated that the truck will be caring a 9ft slide in camper and towing a 4 horse trailer around Colorado. My local trans shop lead me to believe I needed more cooling since I removed the aux. cooler from in front of the radiator.

Thanks again for everyone’s input.



C Cooper

 

[y-knot]

There is a new transmission cooler out that will take care of exactly what you specified. it's the Super Cooler by ProWeld Performance Parts and locates the transmission cool under the truck close to the transmission that it serves. The kit uses all high end matterials and comes as a complete kit with everything needed for the install.

 

[DBF]

Thanks for the responses. I will install the temp gauge 1st and see what is happening before proceeding with cooler. I should have stated that the truck will be caring a 9ft slide in camper and towing a 4 horse trailer around Colorado. My local trans shop lead me to believe I needed more cooling since I removed the aux. cooler from in front of the radiator.

Thanks again for everyone’s input.



C Cooper

Given this information, I'll bet you will as well.



The kit in the response above is about equivalent to the Mopar Superduty cooler installed under the bed as an option on our trucks. It will probably do what you need done.



Then, if the gages indicate you need more, add another one in series with this first one.



Regards, DBF