missing at idle but not under a load. Ideas?? - 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 12-10-2009, 09:35 AM
Powerstroke.org Rookie
 

Join Date: Jul 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
missing at idle but not under a load. Ideas??

My truck started missing and idling VERY rough a couple days ago for no apparent reason. The missing will smooth right out as soon as you touch the gas pedal and the truck will run great. I had the truck scanned and the dealer said that it had 3 injectors that were miss firing, so I changed them out with new ones but it still does it. The only thing that will make the truck idle better(I know this is going to sound strange) but is to crack open the water drain on the fuel filter housing and let some diesel run out the back instead of returning back to the tank. I know that sounds strange, but it instantly smoothes out.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-10-2009, 09:38 AM
Compression Ignition Addict
 

Join Date: Jul 2007
Posts: 5,424
Thanks: 1
Thanked 8 Times in 8 Posts
Feedback Score: 0 reviews
try unplugging your ICP and see if that smooths out your idle. if it does your icp is bad...mine idles rough like that and my ICP is to blame......but mine is an OBS.....
Reply With Quote Quick reply to this message
  #3  
Old 12-10-2009, 11:45 AM
Powerstroke.org Rookie
 

Join Date: Jul 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What and where is the ICP located?
Reply With Quote Quick reply to this message
  #4  
Old 12-10-2009, 11:53 AM
Compression Ignition Addict
 

Join Date: Jul 2007
Posts: 5,424
Thanks: 1
Thanked 8 Times in 8 Posts
Feedback Score: 0 reviews
on mine, its on the drivers side oil rail....towards the froint of the drivers side head......let me see if i can find a pic for ya, i unplugged mine when it was idling and it smoothed right out. http://rides.webshots.com/photo/2290...91838520sSnfJL

Last edited by ianstew; 12-10-2009 at 12:01 PM.
Reply With Quote Quick reply to this message
  #5  
Old 12-11-2009, 11:06 PM
Compression Ignition Addict
 

Join Date: Aug 2007
Location: Redmond, OR
Posts: 585
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
also, check the nut on the back of the IPR as well as the plug on it.... sorry i dont have any pictures but just trace the wires from the ICP sensor, down into the valley and you will find it...
Reply With Quote Quick reply to this message
  #6  
Old 12-16-2009, 04:24 PM
Powerstroke.org Rookie
 

Join Date: Jul 2009
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks for all the help guys, but the truck is still running like crap. I wonder if the cam position sensor could be bad even though it didn't show up bad on the scan???
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 09:23 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