Reply
 
Thread Tools Display Modes
Old 04-01-2013, 10:59 AM   #21
Senior Member
 
jevanb's Avatar
 
Join Date: Dec 2012
Location: Michigan
Posts: 1,446
Quote:
Originally Posted by f1100turbo View Post
Doesn't the Allison/gm go into limp mode and de-fuel when trans overheat occurs?
The 08 duramax for sure has the cooler mounted underneath the truck and just ahead of fuel tank..
I wonder how optimal that is ?
I've been looking for a small shrouded fan to mount on it but its a pretty small cooler@ 8-1/2 by 10-1/2.

Turbs
that is a fuel cooler, not trans.. my engine code is not reliant on this cooler but the LLY is because your FICM is cooled with fuel, no fan is required on any trucks at this cooler
__________________

__________________
2012 Wildcat 344QB

06 LBZ ,CC 4x
lots of mods
Superglide
jevanb is offline   Reply With Quote
Old 04-01-2013, 11:15 AM   #22
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,422
Quote:
Originally Posted by jevanb View Post

that is a fuel cooler, not trans.. my engine code is not reliant on this cooler but the LLY is because your FICM is cooled with fuel, no fan is required on any trucks at this cooler
My bad your right.
I thought I traced the lines.
6 two many buds I guess.
__________________

__________________
TURBS is offline   Reply With Quote
Old 04-01-2013, 09:20 PM   #23
Junior Member
 
Dalroo's Avatar
 
Join Date: Mar 2013
Posts: 14
Good info!

Quote:
Originally Posted by Hipshot View Post
Thanks Lou. I asked my dealer service department what the max temp was when I bought the truck and they did not know. They "thought" 220 was max. I did not know until your post that the DIC gives an alarm at 250. That is good to know. On our trip to Big Bend last spring I had a long climb into a strong headwind. The trans temp got to 216 and worried the heck out of me. Knowledge is good, thanks again.
I am glad to learn this as well. While pulling my 25ULA behind my (now replaced) RAM 1500 HEMI I had trans temps get above 210 on a couple of occasions and it concerned me. On one trip through west Texas, on a long grade it got to 217 and I too was sure I had done damage - now I know while it wasn't good, no significant damage was probably done.

Transmission concern was one of the reasons I upgraded to 3/4 ton CTD.

Good info all around.
__________________
2012 RAM CCSRW CTD
2010 W&P 25 ULA
2012 JEEP Unlimited
1971 LeMans Sprint Convertible
2010 ZG1400 Concours
Dalroo is offline   Reply With Quote
Old 05-05-2013, 03:25 PM   #24
Junior Member
 
Join Date: Apr 2013
Posts: 12
I recently bought a 2008 Surveyor SV-291 that I'm towing with my 2006 Yukon XL.

This truck is (from an power train perspective) a Chevy 1500. 5.3l V8 flex fuel with a 4l65e Transmission.

I added a 40k GVW transmission cooler and a ScanGauge II to monitor the transmission temps. Prior to the cooler I sat around 176F, after the transcooler the truck barely gets over 125F while pulling. It gets up to about 190 (highest I've seen it go) when the truck is idling for 10+ mins. This is a result of the fluid being warmed up as it passes through the radiator by the engine coolant.

The faster you go the lower the temps it seems, even when pulling up grades the temp does not climb hardly at all. I'm very happy with the unit, it replaced the factory tow package cooler, and will hopefully provide a longer life for my 4l65e.

I also put some lucas oil severe gear 85w140 in the rear diff, and replaced my track bar bushings and the truck tows beautifully when the Reese hitch and 1200lb bars. I'm really impressed. I was very afraid that I was going to end up wanting to buy a heavier duty truck because I would be "white knuckle" driving with a 1/2 ton
__________________
blackseven is offline   Reply With Quote
Old 05-05-2013, 03:27 PM   #25
Site Team
 
acadianbob's Avatar
 
Join Date: Mar 2008
Location: St. Paul, Minnesota
Posts: 2,871
Good work!
__________________
http://i421.photobucket.com/albums/pp297/acadianbob/IMG_2757.jpg
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs
acadianbob is offline   Reply With Quote
Old 01-03-2015, 11:58 PM   #26
Senior Member
 
Join Date: May 2013
Posts: 568
Quote:
Originally Posted by blackseven View Post
I recently bought a 2008 Surveyor SV-291 that I'm towing with my 2006 Yukon XL.

This truck is (from an power train perspective) a Chevy 1500. 5.3l V8 flex fuel with a 4l65e Transmission.

I added a 40k GVW transmission cooler and a ScanGauge II to monitor the transmission temps. Prior to the cooler I sat around 176F, after the transcooler the truck barely gets over 125F while pulling. It gets up to about 190 (highest I've seen it go) when the truck is idling for 10+ mins. This is a result of the fluid being warmed up as it passes through the radiator by the engine coolant.

The faster you go the lower the temps it seems, even when pulling up grades the temp does not climb hardly at all. I'm very happy with the unit, it replaced the factory tow package cooler, and will hopefully provide a longer life for my 4l65e.

I also put some lucas oil severe gear 85w140 in the rear diff, and replaced my track bar bushings and the truck tows beautifully when the Reese hitch and 1200lb bars. I'm really impressed. I was very afraid that I was going to end up wanting to buy a heavier duty truck because I would be "white knuckle" driving with a 1/2 ton
Blackseven: does your truck have the same interior as a chevy pickup truck??????

Nevermind, just noticed its a 2006
__________________
Kuba is offline   Reply With Quote
Old 01-04-2015, 04:24 PM   #27
Senior Member
 
hoffkm's Avatar
 
Join Date: Jul 2010
Location: Wauseon, Ohio
Posts: 249
Has anyone else noticed that the manufacturers are running higher temps in the new transmissions? The six speed in my 2015 Silverado runs 195 to 200 degrees wether I am towing or not, no matter the outside air temperature (it just takes longer to reach 200 in the winter). The only logical explanation I have heard is that the warmer fluid flows easier increasing the efficiency of the converter and the gear train as well.
__________________
2011 Rockwood 2901SS Ultra Lite
2014 Chevy Silverado Z71---Hensley Arrow Hitch
my other toy---1969 Camaro 396 SS
hoffkm is offline   Reply With Quote
Old 01-05-2015, 08:16 PM   #28
Senior Member
 
Join Date: Oct 2014
Posts: 255
That's about what my 2010 ran when daily driving - I added an additional cooler and now it is around 170 although that fluctuates more depending on ambient air temp.
__________________
2008 FR Salem 26TBUD
2010 FR R-Pod 171 (2009-2015)
2010 Chevy Suburban
Honda EU3000is inverter-generator
techntrek is offline   Reply With Quote
Old 01-07-2015, 02:59 AM   #29
Senior Member
 
Join Date: Nov 2014
Posts: 140
Turbs, that cooler is for diesel fuel. For the return. To cool down the fuel going into the fuel tank. It's not a transmission cooler. Jfyi.
__________________
jimmyt11664 is offline   Reply With Quote
Old 01-07-2015, 08:34 AM   #30
Infractee
 
Join Date: Aug 2010
Posts: 817
Quote:
Originally Posted by hoffkm View Post
Has anyone else noticed that the manufacturers are running higher temps in the new transmissions? The six speed in my 2015 Silverado runs 195 to 200 degrees wether I am towing or not, no matter the outside air temperature (it just takes longer to reach 200 in the winter). The only logical explanation I have heard is that the warmer fluid flows easier increasing the efficiency of the converter and the gear train as well.

The newer transmissions are thermostat controlled, you could have a cooler the size of the bed in my truck and it will still be 195F loaded or not.

I guess, according to that chart, my trans will only be good for 85K miles??
__________________

__________________
RhoZeta is offline   Reply With Quote
Reply

Tags
transmission temperature

Thread Tools
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




» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:20 AM.