Transmission Overheat and Leak - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-17-2009, 04:01 PM
Powerstroke.org Fanatic
 

Join Date: Sep 2009
Posts: 146
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Transmission Overheat and Leak

Hi All.
I am posting this for my step dad. We have a mysterious problem.

He has a 2002 F350 Diesel Auto.
The other day we were out hunting bison here in northern BC while it was
-40C and while we were cruising around the transmission overheated and started to puke ATF out of the bell housing.

I thought that the front seal on the tranny had let go. The tranny was working fine while leaking, hadn't slipped or done anything strange.

Anyways, we hitch hiked to the nearest truck stop to wait for a buddy to pick us up(all the while I was riding my stepdad like Seabiscut about his Fing Ford...I drive a Duramax). Anyways long story short we happend to run into a guy while waiting and he said his did the same thing once and never leaked again once it cooled off.

So the next day we returned armed with my truck, a big trailer(to haul her back, ATF, heaters and tarps. We got her fired up, filled it with Tranny fluid and drove it home, and it never leaked a drop. Works Flawlessly!!

I think what happened was the tranny cooler froze off/gelled and then the trans couldn't circulate the oil which caused the trans to overheat and there must be a pressure relief on the ford tranny which bleeds ATF?

Has anybody heard of this?
Could there have been any seal damages?
We put in about 5-6 L (1.5Gal) of ATF.
Thanks for your input.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-17-2009, 04:35 PM
Compression Ignition Addict
 

Join Date: Oct 2006
Posts: 1,361
Thanks: 0
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
I too would like to know too. I have had by second cooler gel up and cause the trans to bypass the coolers.
Reply With Quote Quick reply to this message
  #3  
Old 12-17-2009, 04:45 PM
Super Moderator

 

Join Date: Jul 2008
Location: Orangevale, CA
Posts: 12,124
Thanks: 28
Thanked 148 Times in 140 Posts
Feedback Score: 0 reviews
There is a front seal on the tranny. I was towing my 5th wheel(12K) and once my tranny got hot, it puked fluid from the bell housing. Cooled off over night, went sight-seeing (not towing), no leak. But it did do it on the way home. Took it to a tranny shop and they replaced the front seal. They said it's a common issue with these trannies. Hasn't leaked since and I have towed my 5er on some pretty hot days.

You may be onto something thinking the cooler got too cold and didn't allow circulation. Have your dad keep an eye on it....Now that it's been hot like that the seal may be weakened.
Reply With Quote Quick reply to this message
  #4  
Old 12-18-2009, 04:40 AM
Powerstroke Junkie


 

Join Date: Aug 2006
Location: Mayberry, NC
Posts: 8,309
Thanks: 0
Thanked 41 Times in 9 Posts
Feedback Score: 0 reviews
They have a new updated seal for the trans, and having one puke when they get warm is not uncommon. The 4R100 has a bypass line that is on the pass side of the trans and runs between the line to the coolers and the return line, if it senses pressure ( not temp) it will open the bypass valve allowing the fluid to not run through the cooler and simply return to the trans where it will get very warm quick. My guess is under those temps the fluid was so cold it couldn't flow as if it were warm so the bypass opened and returned the fluid back into the trans. I would flush with new fluid ( only Mercon/Dexron III) and keep an eye on it.
Reply With Quote Quick reply to this message
  #5  
Old 12-18-2009, 09:09 AM
Powerstroke.org Fanatic
 

Join Date: Sep 2009
Posts: 146
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks for the input.

So what I get from this is there is no pressure relief that let the fluid out. It would have pushed fluid past the front seal which should be replaced?

Thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 12:25 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors