code P0234 - Ford Powerstroke Diesel Forum
6.0L Problems Forum Having Trouble? Post here

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 03-24-2012, 05:45 PM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
code P0234

Been having my 05 SuperDuty going into Limp Home Mode when pulling a load. Took it to a well respected diesel mechanic and he showed me where the differences in my water and oil temps were to much. He did a EGR delete, coolant flush and a new oil cooler. He also recommended i get something to monitor everything, so I purchased an Edge Evolution CS. Today, while pulling a small load up and extended grade the truck went into Limp Home Mode again... My edge showed the code P0234 which I've learned is Turbo Overboost. My ECT was about 185 deg and my EOT was 193 dwg. Is this a problem with my turbo?

I read on another forum about someone having this same problem and his Ford Dealer said it was caused by TSB 11-5-17 (whatever that is) They reprogrammed the PCM and he was fine. Have any of you heard of this before?

Thanks for any help.

Last edited by mikewarner; 03-24-2012 at 07:46 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-27-2012, 03:43 PM
Powerstroke.org Rookie
 

Join Date: Oct 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Here are some numbers read from my CS as I was towing my 5er. The truck went into Limp Home Mode (showing code P0234) as I was pulling a fairly steep, extended grade at about 55mph. Outside temp was about 70deg......ECT-202, EOT-212, Turbo PSI 28

I turned off the truck which made the limp home mode go away and turned around and pulled the same hill again. This time I kept the speed down to about 45 with around 20 PSI of boost. She climbed the hill without going into Limp Home Mode.

Any thoughts??
Reply With Quote Quick reply to this message
  #3  
Old 03-27-2012, 10:38 PM
Compression Ignition Addict
 

Join Date: May 2010
Location: Warren, Oregon
Posts: 1,515
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Your deltas are OK mine have been as high as ECT 218* EOT 228* pulling 14,000lb 5er up a 7% grade 6 miles long in 90* weather so that part is good the PO234 is an overboost condition think you need to pull the turbo and clean 4C4Z-9V424-AA Turbo cleaning kit Max boost is 28lbs when i hit that i back out of it some.
DTS Articles - Turbocharger Reconditioning
2 stroker
Reply With Quote Quick reply to this message
  #4  
Old 03-28-2012, 04:43 AM
Powerstroke.org Rookie
 

Join Date: Oct 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I had this same problem last year and the dealership had to clean the turbo and have had no problem since.
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 02:21 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