Rough Idle When Hot! - 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 05-29-2011, 05:44 AM
Powerstroke.org Rookie
 

Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Rough Idle When Hot!

Mornin' fellas. I have a 96 PSD f250 with about 74,000 miles on her. When it gets hot, when I decel like on an off ramp, the idle gets rough and then smooths out in about 10 seconds.
1. It has about 2,000 on Rotella T15-40 oil, but the oil change was about a year ago. It hasn't been driven a lot last year.

2. The dipstick showed about a quart high a few days later after she cooled down.

3. I ran it up to about 2,500-2,800 rpms for about a minute and a half the other evening and pulled the dipstick. It had several small bubbles on the stick.

What gives? Change the oil, clean the IPR, replace the IPR? (Where can I get a diagram of where the IPR is? I also heard the Craftsman brand of deep socket is the only one that can reach the IPR.)

Thanks,
Mark
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 05-29-2011, 07:08 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Houston, Tx
Posts: 426
Thanks: 1
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Do you notice any hard shifting like it has a shift kit? Truck must be in amazing shape for that many miles on it!

Small bubbles on the dipstick is normal after running an engine.

Are you getting any engine codes too?
Reply With Quote Quick reply to this message
  #3  
Old 05-29-2011, 11:56 AM
Powerstroke.org Rookie
 

Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
There is no hard shifting, it goes into gear just fine for a diesel. Somebody else on another site suggested changing the oil since it was a year old first. Then clean the IPR if the oil change didn't take care of it. Is it a pain to get to the IPR? Can't find a diagram anywhere to give me an idea of where it is! Yeah, it's in great shape otherwise. It was my Dads from '96 to 2009 when he died, then my brother inhereited it. He only put about 2,000 miles on it, then a couple weeks ago I bought it from him.
Reply With Quote Quick reply to this message
  #4  
Old 05-29-2011, 11:57 AM
Powerstroke.org Rookie
 

Join Date: May 2011
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
P.S. I haven't tried to run a diagnostic on it. I am going to get one. Which one would you recommend?
Reply With Quote Quick reply to this message
  #5  
Old 05-30-2011, 12:05 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Houston, Tx
Posts: 426
Thanks: 1
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Found this through google http://www.dfuser.com/Install%20Guid...0Regulator.pdf

Change the oil and let us know how it runs.
Reply With Quote Quick reply to this message
  #6  
Old 05-30-2011, 12:40 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Houston, Tx
Posts: 426
Thanks: 1
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
Also check your trans fluid level and see if it looks/smells burnt. Your problem could lie in there too if this only occurs while driving.
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 05:42 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