Software update?? - Ford Powerstroke Diesel Forum
General Diesel Discussion Discuss everything else pertaining to Diesel Pickups.

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 08-09-2007, 09:05 AM
Powerstroke.org Rookie
 

Join Date: Jul 2007
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Software update??

I have just purchased a 95 F250 PSD with lots of miles. Over all it runs great, no oil usage and got 19 miles per gallon on the trip home to Virginia from Georgia. It does however have a lope when you first start it and it almost but never completely goes away within about 15 seconds. I ran a scan on the engine, found no codes, did the buzz test and the contribution test. All came back good. I did however read somewhere that an update to the ECM could make the contribution test more sensitive and possibly display more accurate results. Is there anything else to be gained from updating the ECM that would make it worthwhile to have it done. Dealer quoted me around $100.00 to update.


Thanks,

Frank
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 08-09-2007, 09:39 AM
im fat and ugly


 
Join Date: Aug 2006
Location: Shreveport, LA
Posts: 15,684
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
welcome to the site


heres a lil bump to get some more attention on yur question
Reply With Quote Quick reply to this message
  #3  
Old 08-09-2007, 09:43 AM
Banned
 

Join Date: Jan 2006
Location: central coast, california
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
definately get the reflash. It will put a stratagy in injectors that fixes your concern within a day on 95% of trucks!!!
Reply With Quote Quick reply to this message
  #4  
Old 08-11-2007, 06:11 PM
Powerstroke.org Rookie
 

Join Date: Jul 2007
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks, I had it done and it made a huge improvement. Now when I run the contribution test, it points to my #7 cylinder as having a problem, so now I know which way to go. Going to be checking injectors next.


Thanks,

Frank
Reply With Quote Quick reply to this message
  #5  
Old 08-12-2007, 01:12 AM
Banned
 

Join Date: Jan 2006
Location: central coast, california
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
if you have any way to run a power balance, watch cyl 7....odds are if its still failing a contribution and a powerbalance.....its dead. Even if the buzz test is good, the injector can be mechanically dead. If the buzz test fails and the wiring tests good, then its going to be an injector as well..
Reply With Quote Quick reply to this message
  #6  
Old 08-22-2007, 07:51 PM
Powerstroke.org Rookie
 

Join Date: Jul 2007
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well, I replaced the number 7 injector and that cylinder still fails the contribution test. While I had the valve covers off, I ran the engine and pulled the connector on each injector. It is fireing on all cylinders, but there is still this very very small sensation and very slight shake when it is at idle and in gear. I did not do a compression test, I need to find a gauge with the correct adaptor however when it cranks I don't hear any difference while it is cranking that sounds like a weak cylinder.

I did remove the schrader valve and plumbed a pressure guage to the regulator. While at idle, the guage fluctuats so fast between 20 and 80 that you could not read it. It appeared to be in time with each stroke of the pump. An increase in engine speed only makes it worse. I pulled the filter bowl, found that the vaccuum switch was leaking and that the regulator screen was totaly blocked. Cleaned everything and replaced the ageing hoses, but guage still reads the same. Also blew air through the return line to the tank, so no blckage there. I am sure if I had some type of metering device in the line with the guage, I could make it steady enough to read, but I am wondering if this is normal or if using a guage with the schrader valve in place would read different.

If this is abnormal, then is is possible that when the pressure is on the low point, could this be happening at the same time that the number 7 injector fires and could the slight weakness or shake be that it is not getting quite as much fuel pressure as the rest of the injectors?

Also, what is the max pressure that the guage should show at high engine speeds or wide open throttle?

All help is much appreciated, I have learned alot from this forum, it is great!!

Thanks,

Frank
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:16 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