Loss of mpg after getting stuck - 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 10-27-2013, 07:35 AM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Loss of mpg after getting stuck

I went hunting two weeks ago in Colorado. Towing my camping trailer possibly 2.5-3k pounds. Hunting camp is at 9500' When I got there I loss traction in the snow and had to put it into 4wheel drive. Trying to get out I noticed the truck jumping in place as I was giving it skinny pedal. Never notice this before in any of my trucks prior to this. Also I could smell something was hot when I got there. Not sure if that's coming from the tranny or the engine. I had changed the oil the night prior.

After I got unstuck and got moving again and at the camp site. I turned the truck around and went to back up and all I could get was black smoke to roll out and the truck barely apply pressure to the tires. I had to rock the truck to get it to back up. Once I got it to move if I let off the pressure, I would have to restart the process of rock the truck forward and back to get it to move again.

Now on the way out there I went up in elevation from SLC to Co. On I-80 cruising at 75mph or just under 2k rpm and averaged 15-16.5 mpg.
On the way back I went on I-40 which top speed was 65. N but probably averaged 55 mph and got 10. Mpg. Now that I'm home and unhooked at at my normal cruising weight. I'm only getting 11.5 mpg.

My question are, did I screw something up in the tranny when I was stuck? or is all that normal because of the elevation? Or is the oil change part of my problem cause I used rotella?

Truck has 200k miles on it now. PO said that he had the tranny rebuilt around 100k mark. Is this a normal 100k mile rebuil?


Any thoughts would be appreciated.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-27-2013, 07:41 AM
Compression Ignition Addict
 

Join Date: Jul 2008
Location: Wake Forest, NC
Posts: 4,128
Thanks: 28
Thanked 30 Times in 28 Posts
Feedback Score: 0 reviews
Have you checked your hubs to make sure they aren't stuck locked?
Reply With Quote Quick reply to this message
  #3  
Old 10-27-2013, 08:09 AM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
How do I ensure they r unlocked? Lift the front end up and spin a wheel? Hubs dial should be turned counterclockwise?
Reply With Quote Quick reply to this message
  #4  
Old 10-27-2013, 10:37 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Chico, California
Posts: 3,316
Thanks: 14
Thanked 89 Times in 85 Posts
Feedback Score: 0 reviews
if they are stock hubs they should have a arrow pointing which way to lock them.

jack up the front end with the wheels off the ground, if you spin a tire and the drive shaft spins they are locked in.

have you done any trans or transfer case maintenance?

trans case is often never maitenanced, it only takes 2 quarts of atf and 10 minutes to flush and refill.
Reply With Quote Quick reply to this message
  #5  
Old 10-27-2013, 02:34 PM
Compression Ignition Addict
 

Join Date: Jul 2008
Location: Wake Forest, NC
Posts: 4,128
Thanks: 28
Thanked 30 Times in 28 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by gr8outdoorzman View Post
How do I ensure they r unlocked? Lift the front end up and spin a wheel? Hubs dial should be turned counterclockwise?
U should be able to just reach behind and spin the axle with the u joints in the hubs.
Reply With Quote Quick reply to this message
  #6  
Old 10-27-2013, 06:14 PM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I had the wife who isn't colorblind to look at the trans oil. It's probably browner then it should be. So I will drain that and replace the filter. Anything else besides the trans case. Which I might as well do all at the same time.

And they r stock hubs, But they have no visible markings.

Last edited by gr8outdoorzman; 10-27-2013 at 06:21 PM.
Reply With Quote Quick reply to this message
  #7  
Old 10-27-2013, 06:18 PM
Ordnance on coordinates

 

Join Date: Jun 2013
Location: Camden County
Posts: 1,149
Thanks: 4
Thanked 16 Times in 16 Posts
Feedback Score: 3 reviews
If the fluid smells like cat piss, start saving your pennies.
Reply With Quote Quick reply to this message
  #8  
Old 10-28-2013, 04:50 PM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Smells like maybe a slight gasoline smell, but r we talking like a litter box that has been used by a 15 cats and hasn't been changed in a month or a fresh litter box with a small fluffy kitten
Reply With Quote Quick reply to this message
  #9  
Old 10-30-2013, 04:39 PM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What should I use for decron. Valvoline, Lucas, or Royal P? And what's the difference between decron V & VI?
Reply With Quote Quick reply to this message
  #10  
Old 10-30-2013, 04:58 PM
Ordnance on coordinates

 

Join Date: Jun 2013
Location: Camden County
Posts: 1,149
Thanks: 4
Thanked 16 Times in 16 Posts
Feedback Score: 3 reviews
15 kittens.
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 05:08 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