97 PSD IPR problem? - 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 10-18-2010, 04:46 PM
Powerstroke.org Rookie
 

Join Date: Feb 2010
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
97 PSD IPR problem?

my 97 f250 started stalling while it was idling, but it would start right up again, now it wont start. i replaced the cps, still no start. i removed the ipr valve, the coil is good and the valve seems to be ok. the pcm is not switching the negative side of the coil to ground. i jumpered the negative side to ground and the truck started. i took it to a shop to have it scanned. the high pressure oil is at 725 psi at idle, but zero while trying to start with the ipr wired to the pcm. i measured the frequency at the ipr connector with the key on, it was zero, there is 12 volts to ground, but 0 volts to the B wire. i traced the wires to the pcm connector, all are good. do i need a new pcm? or is there another issue i am overlooking? should i read the 400hz frequency at the ipr with the key on? i was reading 45hz with the truck idling with the ipr ground shorted.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-18-2010, 05:07 PM
Banned
 

Join Date: Mar 2010
Location: alabamer
Posts: 1,078
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to harley1rocker Send a message via Skype™ to harley1rocker
maybe i missed somthin but ima ask any way...what was the ipr percentage??? should read between 19 and 30% any thing under that is a bad ipr. what kinda scanner did you hook to it? snap on,or auto enginuity?


just lookin at the ipr isnt gonna tell you if its bad,yo need to see the duty cycle
Reply With Quote Quick reply to this message
  #3  
Old 10-18-2010, 05:13 PM
Powerstroke.org Rookie
 

Join Date: Feb 2010
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
i think the duty cycle was 14%, i don't remember. i'm pretty sure it wasn't over 19%. the shop i took it to had a snap on scanner. so you say i have a bad ipr?
Reply With Quote Quick reply to this message
  #4  
Old 10-18-2010, 07:10 PM
Powerstroke.org Rookie
 

Join Date: Feb 2010
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
when i had the scanner hooked up at the shop, the engine was running with the ipr shorted to ground, that's when it was reading 14%. would that still tell me that the ipr is bad, since it was not being driven by the pcm?
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 04:51 AM.


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