Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
Jayco RV Owners Forum
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-11-2015, 01:18 PM   #1
Member
 
Join Date: Mar 2014
Location: millsboro
Posts: 54
Tranny temp How hot is too hot??

I have a 2010 dodge ram 1500 with the 5.7 Hemi, and I pull a Jay flight 22FB, it pulls it great, I try to keep an eye on my tranny temps, I went today to pick it up from the dealer after getting some warranty work done, and on the way home I was in a traffic jam and I was watching my temps, the tranny temp went up to 171 degrees, then came back down, how hot is too hot?? once traffic started moving it dropped down to 150-155. is this ok??
__________________
2010 dodge ram 1500
HEMI 5.7 4X4
2014 jay flight 22 FB
seaswirl is offline   Reply With Quote
Old 07-11-2015, 02:02 PM   #2
Senior Member
 
Join Date: May 2015
Location: Ottawa
Posts: 141
that is a pretty normal number. my rav4 used to hit 200 just doing city driving, installed a 14.4k btu cooler and now I'm around 160. On the oil cooler box, they say that over 195F is where the oil / transmission life suffers
__________________
2011 Swift SLX 154bh /2012 Rav4 V6 with airbags & 15k btu transmission cooler.
km counter: 1700
octane is offline   Reply With Quote
Old 07-11-2015, 02:04 PM   #3
Senior Member
 
tugboat95's Avatar
 
Join Date: Jul 2014
Location: New Bern
Posts: 402
You are well within normal range. 225 and above is cause for worry....sometimes. Reason your temp went up was you quit moving and had no air flow over your cooler. Some rigs have auxiliary fans that kick on in that situation. Either way 170 is very much right on the money. The cooler the better. Watch your temps as you drive and you Will see either when your thermostat opens or the fan comes on depending on your set up.
tugboat95 is offline   Reply With Quote
Old 07-11-2015, 02:36 PM   #4
Senior Member
 
Join Date: May 2013
Posts: 1,588
It depends on the vehicle. The newer F150s are designed to have hotter running trannys... I can only guess the reason is for better efficiency with hotter/less viscous oil. The hottest I have ever seen mine go is 95*C but I have heard of other guys seeing temps past water's boiling point. Apparently it's when you get into the 230s that you have to be careful... I have never seen my tranny temp gauge go a hair above the middle mark.
__________________
2013 F-150 EcoBoost MaxTow, Roush tuned (415hp 506tq), lifted on 33s, R.A.S.
2013 Jay Flight 28BHS Elite (Equalizer 10K hitch)
SkyBound is offline   Reply With Quote
Old 07-11-2015, 02:42 PM   #5
Senior Member
 
tugboat95's Avatar
 
Join Date: Jul 2014
Location: New Bern
Posts: 402
Quote:
Originally Posted by SkyBound View Post
It depends on the vehicle. The newer F150s are designed to have hotter running trannys... I can only guess the reason is for better efficiency with hotter/less viscous oil. The hottest I have ever seen mine go is 95*C but I have heard of other guys seeing temps past water's boiling point. Apparently it's when you get into the 230s that you have to be careful... I have never seen my tranny temp gauge go a hair above the middle mark.
My 09 ford escape transmission temp runs 190-200. Water temp is 212-220. Go figure. My 99 suburban xmission runs 175 or so light But goes to 190 towing. My water temps stay below 200. So yeah,,,newer Ford's seem to be hotter. As a rule though transmission oil doesn't start to break down until it hits 225 and that's dependant on type brand etc.
tugboat95 is offline   Reply With Quote
Old 07-11-2015, 03:33 PM   #6
Senior Member
 
Join Date: Jan 2014
Location: Aurora CO
Posts: 2,334
I found this helpful

Name:  image.jpg
Views: 194
Size:  11.2 KB
__________________
Jim & Kim from Colorado

2014 Eagle 30.5 RLS
2015 Dodge 3500HD SRW 6.7L
Click on my profile for Mods and notes
Jmooney is offline   Reply With Quote
Old 07-11-2015, 03:53 PM   #7
Senior Member
 
Join Date: Feb 2014
Location: MD
Posts: 3,856
Tranny temp How hot is too hot??

Quote:
Originally Posted by SkyBound View Post
It depends on the vehicle. The newer F150s are designed to have hotter running trannys... I can only guess the reason is for better efficiency with hotter/less viscous oil. The hottest I have ever seen mine go is 95*C but I have heard of other guys seeing temps past water's boiling point. Apparently it's when you get into the 230s that you have to be careful... I have never seen my tranny temp gauge go a hair above the middle mark.

So your saying the new ford transmissions are designed to normally run at hotter temps. Did they design a new fluid that was also designed to handle those hotter temps? Just asking as I don't know. I would think the engineers would want to overbuild the transmissions so they would not get hotter when towing what the truck is rated for as... Maybe that's what you meant. Again only curious.
__________________
2017 JayFlight 28BHBE
2014 JayFlight Swift 264BH (Sold)
2007 GMC 2500 Sierra Classic Crew Cab LBZ Duramax / 6spd Allison
SouthCo is offline   Reply With Quote
Old 07-11-2015, 04:01 PM   #8
Senior Member
 
NVGun40's Avatar
 
Join Date: Feb 2015
Location: Eagle River, AK
Posts: 900
I have now seen a couple of posts in which 'tranny' temps are discussed. Many of these posts have some good advice and primarily discuss the bigger 3/4 ton and larger 'heavy duty' towing and hauling vehicles. However, for those who are new to towing and hauling, I would like to point out something I have not seen mentioned.
Very few vehicles (even those with tow packages, and including the larger heavy duty rigs) come with a dedicated 'tranny' temp guage. Usually, (especially on gas engines) to gain an accurate tranny temp, you have to install a separate gauge.

Just for the general knowledge of those who are new to towing.
__________________
We are just a humble drinking couple with a hunting and camping problem.
2018 Jayco Octane 260
2019 Dodge Ram 2500, 6.4 Hemi, 8 spd A/T
2021 Argo Aurora 8x8/2008 Arctic Cat M1000 SnoPro
Previous: Komfort 5er/Jamboree MH/Lance Cabover/Jayco Whitehawk 25BHS TT
NVGun40 is offline   Reply With Quote
Old 07-11-2015, 04:11 PM   #9
Senior Member
 
Join Date: Feb 2014
Location: MD
Posts: 3,856
Quote:
Originally Posted by NVGun40 View Post
I have now seen a couple of posts in which 'tranny' temps are discussed. Many of these posts have some good advice and primarily discuss the bigger 3/4 ton and larger 'heavy duty' towing and hauling vehicles. However, for those who are new to towing and hauling, I would like to point out something I have not seen mentioned.
Very few vehicles (even those with tow packages, and including the larger heavy duty rigs) come with a dedicated 'tranny' temp guage. Usually, (especially on gas engines) to gain an accurate tranny temp, you have to install a separate gauge.

Just for the general knowledge of those who are new to towing.

So where is the tranny temp gauge getting its reading from on those vehicles? Good info.
__________________
2017 JayFlight 28BHBE
2014 JayFlight Swift 264BH (Sold)
2007 GMC 2500 Sierra Classic Crew Cab LBZ Duramax / 6spd Allison
SouthCo is offline   Reply With Quote
Old 07-11-2015, 04:25 PM   #10
Senior Member
 
tugboat95's Avatar
 
Join Date: Jul 2014
Location: New Bern
Posts: 402
Both of mine are factory sensors feeding the ECM. They are both on the line coming from the cooler into the transmission. I read my temps with an app on my kindle and phone connected thru the OBDII port. This is what the engine computer reads and in such it's is the number the computer uses to evaluate running condition if the engine and gear.
tugboat95 is offline   Reply With Quote
Old 07-11-2015, 04:28 PM   #11
Senior Member
 
Join Date: Oct 2013
Location: Black Mountain
Posts: 138
Any automatic transmission regardless what the O.E.M. documents as a safe operating temperature will not survive above 200F long term even if using exotic synthetic oils. The optimal temp range is 165-180F. On an F150, regardless if it has a tow package of not, if your towing above 50% of max capacity, I would install the largest capacity trans cooler you can find. The additional volume of oil the new cooler will take is as important as surface area. I had many F150's over the years as T.V, last was a 2005 with the H.D. towing package. First trip towing 8,000 lbs had paint / undercoating melting off the floor board / drive shaft tunnel. I didn't have time to put an aftermarket cooler in there before we left. I see lots of folks this year towing massive trailers with newer 1/2 ton trucks. Seems to be a war going on with manufacturers to see who is willing to out it on the line to tow the most. Whats concerning is what we are discussing is smaller trans, coolers, brakes, axles, springs. I went with the 250, got tired of burning out 1/2 ton trucks.
__________________
2011 Powerstoke
2013 334RBTS
East Bound & Down- We Love Camping :)
Firefighter78 is offline   Reply With Quote
Old 07-11-2015, 04:56 PM   #12
Member
 
Calgary5er's Avatar
 
Join Date: Jun 2014
Location: calgary
Posts: 87
Don't know about Fords but on the newer 1500 & up Rams the Transmission temp is in the EVIC display.
__________________

2014 Jayco Eagle 30.5 RLS | Curt 20K sliding Hitch | Champion 3100 Inverter Generator | 2012 Ram 3500 6.7L Cummins CC Laramie Longhorn
Calgary5er is offline   Reply With Quote
Old 07-11-2015, 05:57 PM   #13
Senior Member
 
Join Date: Jun 2011
Location: Athens Ohio
Posts: 238
Even in 100 degree temps pulling mountains in WV my tranny never runs hotter than 180 degrees. I did put in a dedicated transmission temperature gauge in my truck just for peace of mind but have never seen anything temp wise that would begin to worry me.

I also meant to say the times it does get up near 180 are usually in stop and go traffic where there is very little airflow to cool it.
__________________
2013 Jayco 28BHS :campfire:
2004.5 Dodge Cummins running a Hypertech Tuner
certified106 is offline   Reply With Quote
Old 07-11-2015, 06:14 PM   #14
Senior Member
 
NVGun40's Avatar
 
Join Date: Feb 2015
Location: Eagle River, AK
Posts: 900
Another nice caveat to this for those who are just learning and/or new to towing. Even manual transmissions are subject to failure if they get to hot. On my truck, there is a heavy duty trans cooler installed and a temp gauge from Glowshift.com. A lot of the newer trucks are incorporating trans temps on the EVIC display but for those of us with older trucks and those who are using smaller 1/2 tons and SUVs for towing their TT's, coolers and guages are wise investments.
__________________
We are just a humble drinking couple with a hunting and camping problem.
2018 Jayco Octane 260
2019 Dodge Ram 2500, 6.4 Hemi, 8 spd A/T
2021 Argo Aurora 8x8/2008 Arctic Cat M1000 SnoPro
Previous: Komfort 5er/Jamboree MH/Lance Cabover/Jayco Whitehawk 25BHS TT
NVGun40 is offline   Reply With Quote
Old 07-11-2015, 08:30 PM   #15
Senior Member
 
1wayhighway's Avatar
 
Join Date: Feb 2014
Location: Ortonville, MI
Posts: 123
I run 193 just driving around and 200 to 203 towing.
__________________
2018 GMC 2500 Duramax
2014 White hawk 28DSBH
1wayhighway is offline   Reply With Quote
Old 07-11-2015, 09:43 PM   #16
Senior Member
 
Join Date: May 2013
Posts: 353
Same as above ^^ for me. 2014 ram 3500 ctd towing 16k
__________________
2014 Ram 3500 SRW CTD
gtsum2 is offline   Reply With Quote
Old 07-12-2015, 06:33 AM   #17
Site Team
 
norty1's Avatar
 
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,772
I had an aftermarket trans. Temp gauge installed on my old 7.3 psd. It avg'd 180 and if it ever got to 210 in the mtns. I would pull over and let it cool.
The mechanic I dealt with said the temp can vary depending on where the coolant line is tapped. He said to set a normal bench mark and use it for a reference. Having a gauge is key. As the 7.3 only had a idiot light.
__________________
Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
norty1 is offline   Reply With Quote
Old 07-12-2015, 06:56 AM   #18
Member
 
Join Date: Jul 2015
Location: Southern Ontario
Posts: 88
I have a 2014 Dodge Ram 1500 with the 5.7 Hemi. The towing portion in my truck manual says, if I get stuck in a traffic jam while towing a trailer, put the transmission in neutral and give the truck a bit of gas. This will bring the temperature back down.
#1Remembories is offline   Reply With Quote
Old 07-12-2015, 07:36 AM   #19
Senior Member
 
Join Date: Jan 2011
Location: Vienna
Posts: 2,044
My 2015 ram 2500 6.7L Cummins has all the temperatures displayed in one display panel. Shows coolant temp, transmission temp, oil temp, and oil pressure. With me towing on level ground water temp runs 199, trans temp runs 176, oil temp runs 205, and oil pressure was about 50 psi. This was after running for over an hour on mostly level ground. Outside temp was 98 degrees also!
__________________

Joe Hinson
2010 Jayco Quest G2(SOLD)
2014 Jayco Eagle 33.5RETS
2007 Ram 2500 5.9L Cummins(SOLD)
2015 Ram 2500 6.7L Cummins 4WD
:)
namusmc65 is offline   Reply With Quote
Old 07-23-2015, 06:44 PM   #20
Junior Member
 
Join Date: Jul 2015
Location: Debary
Posts: 7
I have a 2013 5.7 Hemi and tow a X23F. My tranny temp runs about 158 when towing and this seems to be well within range according to others on the Dodge Ram Forum. I have told to double-check the temperature rating of the transmission fluid as well.
dougmarrs is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 12:16 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.