transmission temps - Ford Powerstroke Diesel Forum
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Old 05-16-2014, 02:57 PM
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transmission temps

Hello everyone its been a long time since ive been on here and for that I apologize.

First off I need to update my sig bit dont really have time right now. New mods on the truck are lift kit running 38 inch toyos.

My problem is running around town empty with no load and not hot rodding around my trans temps are running around 180 degrees I know that is way to hot with the outside temp being 82 degrees.

I know I need to do a mod of some sort for my trans cooler but even without that I don't think I should be running that hot. I did notice a little bit of leaking tranny fluid from around the inspection plate. Is there a way to check and see if the current cooler lines are plugged and the fluid going thru the bypass? Or do you have any other ideas?
Thanks in advance.
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Old 05-16-2014, 03:34 PM
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actually IMO that's not to far off. I run about 155-160 in town and im on 33's. in town on 38's with stock gearing I can see 180. IIRC 60-100 degrees above ambient temp is good. if you were around 200 that's when I'd start worrying.

DISCLAIMER: im not a transmission guru
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Old 05-16-2014, 04:56 PM
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Im worried about once it gets in the 100s here.
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Old 05-16-2014, 05:24 PM
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if a cooler line was plugged wouldn't it puke out some trans fluid rather than leak just a little?
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Old 05-16-2014, 06:11 PM
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on a stock cooler, i dont see anything out of the ordinary there. get you a 6.0 cooler.

Mine stays pretty much exactly 80 degrees hotter than ambient air temps with a tru cool cooler
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Old 05-17-2014, 03:18 PM
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Ok today outside temp is onky around 72 and driving around easy temps got to around 210.
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Old 05-18-2014, 10:46 AM
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How's the fluid look?
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Old 05-28-2014, 03:52 PM
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Fluid looks ok doesnt smell burnt.
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Old 06-21-2014, 06:46 PM
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do the 6.0 Transmission swap. it will take you about 2-6 hours depending on how much yu know about your truck.

It took me about 4 hours. and i was slacking off. I have never seen over 165 on my transmission temp and its gotten above 110 here in NC. I did see 160 with about 7500lbs on my trailer and it was around 95 outside.

other then that my best friend has the small 7.3 transmission cooler in his truck and he sees around 200-210 all day and he has yet to have a problem. so i honestly wouldnt worry too much about it till about 250 then you need to pull over.

Im also not a guru on transmission just telling you my personal experience.
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Old 06-21-2014, 08:53 PM
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250 is to hot. Iirc 230 than pull over and high idle in park or neutral. And did u mean 6.0 trams cooler?
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