Trans slip? under load then ok? - 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 10-06-2010, 10:30 AM
Member
 

Join Date: Jul 2007
Location: Redding, CA
Posts: 69
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Cool Trans slip? under load then ok?

Last week my son called and asked me to tow a trailer loaded wih two cord of oak 20 miles up toward Mt lassen from Redding. All good as normal, for first 15 miles , then on a long grade at about 50 mph (In tow/haul Mode). there was a strange noise from the engine or tranny and I lost power till I was down to 10 mph so I pulled over and stopped. found no apparent problem and the check engine function showed no problem. I restarted and all ok till I hit 45 -50 mph and it repeated. This time I pulled it down into 2nd gear slot and completed the climb at about 25 mph ok. Unloaded the trailer and have had no repeats at all. Any one have any ideas what might have happened. i suspect either trans did not shift properly or maybe a turbo hang up that cleared up afterwards.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-06-2010, 10:56 AM
<b>Premium Member</b>

 

Join Date: Aug 2006
Location: Cooperstown, NY
Posts: 1,767
Thanks: 18
Thanked 9 Times in 9 Posts
Feedback Score: 0 reviews
Sounds similar to an issue I had with my truck a couple weeks back, going up an incline the truck doesn't want to shift, and you lose power dropping to 10mph. It was a problem with the Fuel Rail Pressure Sensor. Basically the tech said the sensor was telling the computer that the fuel psi at 65-70mph wasn't 22,000psi, but was 600psi(Idle pressure). So they replaced it (under warranty) and no more issues.
This problem will not throw a code, unless you have one of the techs computers hooked up to the truck looking for that specific code.

James.
Reply With Quote Quick reply to this message
  #3  
Old 10-07-2010, 06:20 PM
Member
 

Join Date: Jul 2007
Location: Redding, CA
Posts: 69
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
My dealer service writer says he thinks a EGR valve stuck he wants to read the codes to check. I also think you are on to something with the fuel rail pressure sensor. So far my truck has not repeated the power loss episode. thanks for your note.
Reply With Quote Quick reply to this message
  #4  
Old 12-10-2010, 06:18 PM
Powerstroke.org Rookie
 

Join Date: Nov 2010
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
my truck is doing the same thing but i get a code some times fuel rail pressure to low also if you shut off the truck and restart it it works fine until i put a good load on it. but i also think i have a trany problem between 3rd and overdrive put hopefully this is causing that problem
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 04:31 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