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post #11 of 13 (permalink) Old 06-21-2016, 09:30 AM Thread Starter
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AC holds up just fine!
The brown leather gets a bit hot though.

I've driven offroad out in the desert with it almost this hot. AC pumping the whole time without any problem.
The transmission starts to heat up a bit, especially with low range. Otherwise the heat doesn't bother the TH much at all.


'14 White Cherokee TH - Grand Canyon Brown
1.5" aussie lift, RRO step rails, rear hatch LED lighting
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post #12 of 13 (permalink) Old 07-02-2016, 01:11 AM
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ua_who said "The transmission starts to heat up a bit, especially with low range." I've had my TH tranny heat up quite a bit off-road when crawling up and down hills and such. What I have found differs in that it seems to handle the temperatures better (stays lower) if I do go into low-range and limit the tranny to shifting no higher than 3rd. I suspect that keeping it in low-range forces the RPMS higher and thus forces more fluid through the transmission cooler. That is just a guess on my part but I can't come up with any alternate explanation. In the past I've had the tranny temperature go up as high as about 232° (in hi-range) with no ill effects but I try to keep it no higher than around 200° and low-range seems to help with that.

2015 Trailhawk w/ V-6. Factory trailer package includes transmission cooler.
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post #13 of 13 (permalink) Old 07-02-2016, 07:52 AM
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Originally Posted by warzim View Post
ua_who said "The transmission starts to heat up a bit, especially with low range." I've had my TH tranny heat up quite a bit off-road when crawling up and down hills and such. What I have found differs in that it seems to handle the temperatures better (stays lower) if I do go into low-range and limit the tranny to shifting no higher than 3rd. I suspect that keeping it in low-range forces the RPMS higher and thus forces more fluid through the transmission cooler. That is just a guess on my part but I can't come up with any alternate explanation. In the past I've had the tranny temperature go up as high as about 232° (in hi-range) with no ill effects but I try to keep it no higher than around 200° and low-range seems to help with that.

2015 Trailhawk w/ V-6. Factory trailer package includes transmission cooler.
I believe gears 1-4 use the dog clutches, so there is less mechanical slip. Slip is where a lot of heat is generated.

I'm sure somebody will direct me on the exact gears.

'15 Deep Cherry Red TH w/Brown Interior. 3.2L V-6
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