Transmission Cooler
04-04-2013, 05:33 AM
#651
JK Enthusiast
Join Date: Dec 2008
Location: Camp Humphreys Korea
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Have you noticed if your engine temps have gone up since you installed the unit in front of your radiator? That is my biggest concern. I have had my cooler for a little over a month and have been trying to decide whether to install it in front of the radiator or not. It gets real hot here in the summer and I'm not wild about blocking air to the radiator. The unit I bought does have an electric fan on it, so that should help, just don't want to force more hot air through the radiator fins especially on trail rides when you driving slow and things tend to heat up more.
04-04-2013, 05:39 AM
#652
JK Jedi Master
I have not yet installed a tranny cooler yet, but it should actually help the engines cooling system as well. From the factory the tranny oil runs thru the bottom of the radiator cooling the fluid and raising the water temp. Cooler running trans from the aux cooler = cooler trans fluid running thru the oil cooler portion of the radiator. Yes it will indeed raise the air temp of air flowing thru the radiator, but it shouldn't be enough to off set the benefits of cooler trans fluid.
When I installed the aux transmission cooler on my '08 JK, I saw no increase in engine temp, or change A/C performance.
Last edited by ronjenx; 04-04-2013 at 05:43 AM.
05-26-2013, 12:55 PM
#654
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Join Date: Oct 2009
Location: Hickory, NC
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Anyone else have coolant come out at the cap on their initial drive and get all over the passenger side lower? Can't really understand why that happened. Drove it for 6-7 miles and returned home, added about 16oz of ATF+4, and noticed the coolant spray. Any ideas? ( BTW, no leaks at any of my clamps
05-26-2013, 02:19 PM
#655
JK Super Freak
Anyone else have coolant come out at the cap on their initial drive and get all over the passenger side lower? Can't really understand why that happened. Drove it for 6-7 miles and returned home, added about 16oz of ATF+4, and noticed the coolant spray. Any ideas? ( BTW, no leaks at any of my clamps
05-26-2013, 02:28 PM
#656
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Supechips shows transmission at 150* F, and engine coolant steady at 90*C. I hooked up my lines to the Top hose, and they show no leaks. Also, I used the diagram on p.19 or 20 of the thread.....top hookup of cooler to left (passenger) side and bottom to right (driver) side of the cut.
05-26-2013, 07:20 PM
#657
JK Super Freak
How much tranny fluid did you add after the cooler install? I was supposed to see mine was a little overfilled from the factory and didn't need any additional fluid.
05-27-2013, 03:12 AM
#659
JK Jedi Master
Anyone else have coolant come out at the cap on their initial drive and get all over the passenger side lower? Can't really understand why that happened. Drove it for 6-7 miles and returned home, added about 16oz of ATF+4, and noticed the coolant spray. Any ideas? ( BTW, no leaks at any of my clamps
If you have normal engine temp with coolant coming from under the properly installed radiator cap, replace the cap.