help needed - rough running truck - 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 02-12-2014, 05:58 PM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
help needed - rough running truck

Last week while driving my 2000 F350 normally, the engine started running very rough. I was running my DP Tuner 80hp economy tune at the time. No SES light or significant codes. Truck starts easily, idles smooth, but runs very rough when driving and is down on power. Replaced CPS, no change.

Took to dealer after reloading stock tune. Dealer pulled two codes, P0470 and P1280. Recommended replace EBP sensor and clean tube and ICP sensor. Cost would be $1100. I declined.

Replaced EBP sensor and cleaned tube(it was clogged). Made no difference.

When I drove today, ICP looked to be in the normal range (~650 at idle, 1200 to 2300 when driving) and IPR duty cycle looked OK (~10 at idle and did not exceed 36 when driving). Measured by DPTuner Infinity.

Ordered ICP sensor and picked up IPR valve.

Am i on the right track? Other ideas? Thanks.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 02-16-2014, 11:18 AM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Still P0476. Pulled EBP to recheck tube. It was open. reinstalled.

Installed new ICP sensor. There was some oil in the top of the old sensor.

No other codes. Truck still runs like crap. Starts easily, idles smooth.

IPR? Anything else to check?

Thanks.
Reply With Quote Quick reply to this message
  #3  
Old 02-18-2014, 03:15 PM
Compression Ignition Addict
 

Join Date: Apr 2008
Location: Monterey Bay, CA
Posts: 346
Thanks: 2
Thanked 14 Times in 13 Posts
Feedback Score: 0 reviews
Pull the valve covers and check the UVCHs. It could be that one side or the other is starting to back out and causing intermittent contact.
Reply With Quote Quick reply to this message
  #4  
Old 02-25-2014, 06:04 PM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Pulled both valve covers. Under VC harnesses were slightly loose but not burnt connects or signs of arcing. Reconnected and re-installed valve covers. Still runs like crap. Starts easily, idles well, no codes.

I plan to install a new IPR valve this weekend. Any other thoughts or parts to check. I am out of ideas.

Thanks.
Reply With Quote Quick reply to this message
  #5  
Old 02-26-2014, 11:09 AM
Compression Ignition Addict
 

Join Date: Apr 2008
Location: Monterey Bay, CA
Posts: 346
Thanks: 2
Thanked 14 Times in 13 Posts
Feedback Score: 0 reviews
How much fuel do you have in the tank?
Reply With Quote Quick reply to this message
  #6  
Old 02-26-2014, 01:24 PM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
About 3/4.
Reply With Quote Quick reply to this message
  #7  
Old 03-02-2014, 01:31 PM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Update:
Replaced IPR. Did not help. Engine still runs rough. Starts easily. Idles well.
When first driving after replacing IPR, I did get a SES and the code that came up was P0344.

Using DP Tuner Infinity:
KOEO- No Codes
KOER- P0476 and P0541
Buzz Test- No codes
Cylinder Balance test- No codes

I have replaced:
CPS
EBP
ICP
IPR
Checked UVCH on both sides (did not see any real issues)

Not sure what to do next.
Reply With Quote Quick reply to this message
  #8  
Old 03-03-2014, 02:00 PM
Compression Ignition Addict
 

Join Date: Apr 2012
Posts: 164
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
If you have a stock muffler check to see if the muffler is clogged. Also check the orientation of the exhaust backpressure valve (which is found at the turbo outlet/ downpipe) Even though you might have a new sensor and clean tube, the solenoid/ actuator or electrical connector in the turbo pedestal might be bad or leaking oil. (Check to see if there is oil below the turbo. Also check your up-pipes for leaks (lots of black soot at the top where the two pipes leak). Last but not least, check your oil level.

Does It run rough all the time or only at a specific load or speed?
Reply With Quote Quick reply to this message
  #9  
Old 03-03-2014, 04:35 PM
Member
 

Join Date: Jan 2007
Location: Mechanicsville, VA
Posts: 33
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks for the feedback.

Exhaust is aftermarket stainless steel 4 inch turbo back. Oil level is at the top of the cross hatch area on the dipstick and looks clean. I will check the up pipes. How do i check the orientation of the exhaust backpressure valve?

The engine idles well. Seems to run really rough from about 1300 to 2000 RPM. But feels down on power across the board.
Reply With Quote Quick reply to this message
  #10  
Old 03-03-2014, 04:35 PM
Compression Ignition Addict
 

Join Date: Apr 2008
Location: Monterey Bay, CA
Posts: 346
Thanks: 2
Thanked 14 Times in 13 Posts
Feedback Score: 0 reviews
You said you have replaced the EBPS. Did you check the condition of the tube that runs from that sensor to the pass side exhaust manifold. It can become clogged with soot or have rust eat a hole through it.
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 06:27 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