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09-09-2015, 10:19 AM
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#1
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Member
Join Date: Jun 2015
Location: Oswego
Posts: 52
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Transmission Temperature Question
Hi all, I'm towing a 2016 Jay Flight 27RLS with a 2010 Chevy 2500hd with 6.0L and 6 speed tranny. I noticed that when towing the trailer, the tranny temp is ~100 degrees F greater than the ambient temp. Does this sound about right? Is there a temp where I should start to be concerned? Thanks for any guidance.
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09-09-2015, 10:24 AM
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#2
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Senior Member
Join Date: Oct 2014
Location: St. Clairsville
Posts: 225
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Some questions for you so we can give a better answer. What temp does the transmission stay at when not towing? What is the actual temperature when towing and does it change when going up and down hills? My transmission temp typically runs between 165-180 when towing.
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2000 Ford 4x4 Crewcab Dually 7.3 PSD
2015 Seismic 3712
2013 Jay Flight 32BHDS (sold)
2009 Jay Flight 31BHS (sold)
2005 Jay Flight 27BH (sold) - probably my favorite
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09-09-2015, 10:33 AM
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#3
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Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
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On my 2003 F350, the gauge has white, yellow and red bands. Pretty clear on what's OK and what's unacceptable operating conditions.
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TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!
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09-09-2015, 11:00 AM
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#4
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Senior Member
Join Date: Sep 2013
Location: South Texas
Posts: 7,217
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I never looked at it that way, but 100 over ambient doesn't sound out of line.
Mine stays at 175 most of the time, I've had it up to 185 once or twice (ambient in most cases so far has been 90 or more, even up to 100 or better a time or two). In my old 2012 GMC 1500, I had it up to 240 on a hot trafficky day, and I was getting worried, but that's still within spec for that truck (allegedly).
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-2018 Greyhawk 29MV
-2020 Jeep Wrangler Unlimited (JLU) (Primary Toad)
-1994 Jeep Wrangler YJ (Secondary Toad)
-2014 Jay Flight 28BHBE & Ram 2500 6.4L CC 4x4 (sold)
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09-09-2015, 11:35 AM
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#5
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Senior Member
Join Date: Sep 2010
Location: New York
Posts: 2,210
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I would say anywhere between 160-210 is normal and that is subject to vehicle, tranny and cooling capabilities as well as road conditions. In stop and go traffic my tranny will climb 10-15 degrees depending on outside temps. I have yet to hit 200 under any condition, but friends 2500 and 3500 series Chevys get into the low 200's under certain conditions regularly.
I have a tranny cooler and it also flows through the radiator which can add heat at times like when in traffic and my coolant is running over 210.
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2014 375 BHFS Eagle Premier
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09-09-2015, 12:14 PM
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#6
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Site Team
Join Date: Nov 2010
Location: Virginia`s Eastern Shore
Posts: 17,093
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Have approached but not passed 200 on mine. But have not towed up a steep grade yet in Summer heat, that would likely push those temps up even more. But the newer synthetic Dexron VI can take more heat then the old conventional Dex III.....
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2017 Coachmen Catalina 283RKS
2018 Ford F250 Super Duty 6.2l CCSB
2010 Jayflight 28BHS (sold)
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09-09-2015, 12:40 PM
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#7
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,861
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My last truck had a actual temp gauge, not an indicator. If it got to 205 I would pull over and let it cool down at idle speed. It would approach it on a steep grade while towing my last rig.
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Moderator
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09-09-2015, 07:35 PM
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#8
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Senior Member
Join Date: Jul 2014
Posts: 957
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Might want to look into a ScanGuage II, connects to the OBDII port on vehicles, and you can select what parameters you want to monitor, even program some into the unit, tranny fluid temps is one of 'em. You won't be "guessing" what the ATF temp is, and you can find out what is normal for your vehicle's make via the web, but every vehicle seems to be different by several degrees.
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09-09-2015, 07:51 PM
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#9
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Senior Member
Join Date: Aug 2012
Location: Kalamazoo
Posts: 769
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We just got got back from a trip to South Dakota. My transmission temp never exceeded 170. On the cooler days towing it never reached 160.
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09-09-2015, 07:52 PM
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#10
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Senior Member
Join Date: Nov 2014
Location: Jersey
Posts: 310
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As most said 100 Deg over ambient is fine.If it got over 220 id start to worry.I just towed in 104 Deg weather with ac blastin and 9k trailer in tow and trans hit 190 195 in traffic and stayed around 185 while cruising.Im running Transynd Full synthetic which helps also with dissipating the heat
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06 2500 Duramax. Air lift 5000 air bags,Equalizer WDH, EFI live,fass fuel system,4" straight pipe
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09-09-2015, 09:31 PM
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#11
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Senior Member
Join Date: Mar 2015
Location: Port Orchard
Posts: 2,065
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__________________
Don
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09-10-2015, 08:33 AM
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#12
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Senior Member
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,726
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If you are ever worried about your transmission fluid just pull the dipstick out and sniff the fluid. If it smells burnt it needs to be changed..
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Seann
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 900watts of solar, Lithium batteries (400amp hour), 2000 watt (4000 surge) whole house inverter.
145days /2023 2022/151 2021[/COLOR]
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09-10-2015, 09:04 AM
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#13
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Senior Member
Join Date: May 2015
Location: Campbell Hall
Posts: 2,835
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Quote:
Originally Posted by Seann45
If you are ever worried about your transmission fluid just pull the dipstick out and sniff the fluid. If it smells burnt it needs to be changed..
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At that point its too late. The fluid is cooked (or partially), and the resins in the clutches have been exposed to higher than rated temps.
The whole point of a gauge is that the driver is aware of detrimental operating conditions and takes remedial action before they become damaging operating conditions.
__________________
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!
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09-10-2015, 12:02 PM
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#14
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Senior Member
Join Date: Jul 2014
Location: New Bern
Posts: 402
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Quote:
Originally Posted by cosmo
Hi all, I'm towing a 2016 Jay Flight 27RLS with a 2010 Chevy 2500hd with 6.0L and 6 speed tranny. I noticed that when towing the trailer, the tranny temp is ~100 degrees F greater than the ambient temp. Does this sound about right? Is there a temp where I should start to be concerned? Thanks for any guidance.
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First thing I would look at would be the gauge. Take an infrared thermometer and measure the actual transmission line and compare it with what the gauge says both towing and light. Check the gauge calibration. Get a baseline of what's "normal" for your truck. 100 degrees sounds like a lot. But it's really not. My Escape tows at about 200 degrees but my suburban does about 170. Both in the middle of 90 degree summer temps. All that being said I wouldn't expect your towing temps to be more than 20 degrees warmer than your light temps. If so them a cooler or fan combo needs to be looked into
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09-12-2015, 12:39 PM
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#15
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Junior Member
Join Date: Aug 2015
Location: Cedaredge
Posts: 12
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I agree with jimp. I have a scan- gauge 2 and use it on my 09 Toyota Tacoma. It will
give you trany temp and other indicators for your engine. Good idea to get a infrared
temp gauge and compare it to the scan- gauge 2. I don't leave home with-out my scan-gauge 2.
Jon- Luc
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