PCM help!!! - 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 08-07-2012, 06:15 AM
Member
 

Join Date: Mar 2010
Location: ponca city
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
PCM help!!!

ok, so i was driving the other night and my truck just died like i shut the key off. i can crank, crank, crank and nothing. i have no wait to start light, no check engine light, GPR not clicking on, nothing. I checked #9 fuse under the hood and it is ok, people were saying that fuse controls PCM. so we hook up a scanner and it wont connect to the truck. reading on here it sounds like it is the PCM?? i pulled it out of the truck tonight, it doesnt smelled burned and doesnt have any signs of burning up. it is a F5TF-12A650-FJ BEG8. if have been looking and looks like it is going to be the double the cost of any other PCM. my main concern is #1 does this sound like PCM failure and #2 can i use another PCM as long as it is made for a 5sp tranny. please help guys, i have a job sat that i have to haul my skid steer 50 miles to go work......
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 08-07-2012, 07:33 AM
Compression Ignition Addict
 

Join Date: Aug 2008
Location: Madison, WI
Posts: 2,870
Thanks: 2
Thanked 55 Times in 53 Posts
Feedback Score: 0 reviews
It's the #22 fuse that energizes the PCM. Middle row in the fuse box, furthest away from the fender. But if it's blown, don't just replace it. Disconnect the fuel heater from the fuel bowl first (IIRC, midway down the fuel bowl, two wires, one of them red/green). It's probably shorted out and that's what blew the fuse.
Reply With Quote Quick reply to this message
  #3  
Old 08-07-2012, 11:58 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,636
Thanks: 0
Thanked 26 Times in 26 Posts
Feedback Score: 0 reviews
X2 on what madpoque suggests. Looks like you have a 94? Basing that on the BEG8 calibration on your PCM. If that's correct, then you can use any 49-state PCM for a manual tranny. My 94 PCM was refalshed to a 96 ALF4 calibration and that's what I replaced it with when mine went south. Cheers!
Reply With Quote Quick reply to this message
  #4  
Old 08-07-2012, 01:00 PM
Member
 

Join Date: Mar 2010
Location: ponca city
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
i checked all of my fuses last night and that fuse checked ok, with that said sounds like the PCM. what is a re-flash? it is the 94.5 BTW
Reply With Quote Quick reply to this message
  #5  
Old 08-07-2012, 05:58 PM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,636
Thanks: 0
Thanked 26 Times in 26 Posts
Feedback Score: 0 reviews
A reflash is when the programming in the PCM is changed. The dealers did this when new programming (some of it to fix problems) came out. They did mine to enable the better diagnostics capability of the later trucks. Make sure you check the fuses with a meter (plenty of folks have given it just the eyeball test and been wrong). If you do still have the BEG8 programming, a scanner will not connect at the underdash OBDII port as it is not activated (until they reflash it like mine). The only diagnostic port available on a factory 94 is under the hood (driver's side near the rear corner of the hood). Cheers!
Reply With Quote Quick reply to this message
  #6  
Old 08-08-2012, 04:07 AM
Member
 

Join Date: Mar 2010
Location: ponca city
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
i did go ahead and check all the fuses with a meter, i always do that just to be sure. interesting stuff on the flashing, i have always used my under dash port to check codes and it has always worked...sounds like the truck has been reflashed at some point. if i remember correct the under hood wasnt working for my mechanic. i went ahead and ordered a PCM that was BEG8 yesterday before i read this. i guess once it comes in and hopefully fixes the truck i need to have it updated flashed and send back my TW tuner that i had burned for the BEG8. always learing something new on here. will i have to take the truck to the stealership to reflash? thanks for your help.
Reply With Quote Quick reply to this message
  #7  
Old 08-09-2012, 11:45 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 1,636
Thanks: 0
Thanked 26 Times in 26 Posts
Feedback Score: 0 reviews
You may find a dealer that can do it, but some don't have a clue. Check with DP Tuner as I've heard they can reflash them. Cheers!
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 11:43 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