Excursion 7.3 hesitation on acceleration - 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 07-11-2012, 07:33 PM
Powerstroke.org Rookie
 

Join Date: Jul 2012
Location: In my house
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Excursion 7.3 hesitation on acceleration

I just bought a 7.3 excursion with 200,000 miles. I noticed a hesitation or engine misfire/cut out(best I can explain it) while accelerating and holding speed (around 50-60). Truck does seem to lack power.maybe. It seems like the problem is most evident on initial startup then drive. I check codes and I've got a glow plug mod bad and back pressure sensor bad. I don't think these things can cause these problems. I also notice a miss at idle sometimes. Can a injector cleaning solve problem? Is there a option to run a cylinder balance test on a scanner for the 7.3?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-11-2012, 10:39 PM
aussie=effie
 

Join Date: Apr 2010
Location: melbourne, australia
Posts: 268
Thanks: 0
Thanked 3 Times in 3 Posts
Feedback Score: 0 reviews
acceration

get a new CPS for starters maybe ?
Reply With Quote Quick reply to this message
  #3  
Old 07-13-2012, 07:55 PM
Powerstroke.org Rookie
 

Join Date: Jul 2012
Location: In my house
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I don't think the cps would cause a misfire. It kinda feels like it bucks espescially when accelerating at around 2000 rpm. When running seems fine. I'm still getting around 17-18 mpg on hwy. no chip just intake. Anyone has luck using injector cleaner?
Reply With Quote Quick reply to this message
  #4  
Old 07-13-2012, 08:07 PM
Powerstroke.org Fanatic
 

Join Date: Jul 2012
Location: Ogden Utah
Posts: 117
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I run powerservice (think thats the name) and have had great luck with it. can get it at walmart for about 7$. when I bought my truck it seemed like maybe some injectors were sticking on startup (rough idle, misses kinda like you describe) but after I ran a few tanks of that have never seen the problem again. Not to mention I get about 2 mpg more when I use it. Pays for itself, I will always run it!
Reply With Quote Quick reply to this message
  #5  
Old 07-13-2012, 08:40 PM
Powerstroke.org Rookie
 

Join Date: Jul 2011
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by Indy View Post
I don't think the cps would cause a misfire. It kinda feels like it bucks espescially when accelerating at around 2000 rpm. When running seems fine. I'm still getting around 17-18 mpg on hwy. no chip just intake. Anyone has luck using injector cleaner?
When my cps went bad, it did cause a misfire. It would act strange at odd times and the rest of the time I never knew I had a problem. I would just start there, as they are cheap and easy to replace. Also they commonly to go bad many people keep a spare.
Reply With Quote Quick reply to this message
  #6  
Old 08-19-2012, 06:33 AM
Powerstroke.org Rookie
 

Join Date: Feb 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have had the same issue as Indy (I think). Have owned my 01 for about 18mos. The random misfire seems to be more apparent at lower speeds or just beginning to accel after coasting. I can always power through the stumbling effect by applying more pedal. I always have plenty of power and no codes. It may just be a coincidence, but my issue seems to better itself after an oil change. This issue is driving me nuts! Any suggestions would be appreciated.
Reply With Quote Quick reply to this message
  #7  
Old 08-25-2012, 05:38 PM
Powerstroke.org Rookie
 

Join Date: Feb 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Update to the hesistation/misfire. I replaced the CPS since it was cheap and while checking sensor plugs for signs of oil, I found the ICP was leaking oil through the plug. I cleaned it and the sensor with brake clean and packed it with dielectric grease - bad idea cause I think it acutally made the issue worse. Today, I "rebuilt" the IPR, pulled the ICP to clean it (hoping to find something) cleaned the plug and used no grease this time and then crossed my fingers for the better. My test drive seemed to be sucessful! I cant say exactly what I think was causing the issue sinc I did several things at the same time. I ran across an ICP on ebay for $54 so I'll swap it out anyway since it shows signs of leakage.

Last edited by dsw140; 08-25-2012 at 05:44 PM.
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 05:34 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