need help - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 02-03-2013, 02:28 PM Rookie

Join Date: Jan 2013
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
need help

have figered out ficm bad has 48.5 till crank goes to around 20 then comes back up after stop cranking with no start my ? is batteries check 12.5 when cranking goes to around 10 is that norm batteries are 6months old motercraft from ford dealer had them droped off and checked said they were good but on only had 725 cca is that normal or do they just not want to cover ,they have three year free replacment wondering if thats what burned ficm up how low should they go here s what they read
key off 12.5
key on glw plugs on 11.2
crank around 10
Reply With Quote Quick reply to this message
Sponsored Links
Old 02-04-2013, 04:58 AM
Emergency Services


Join Date: Apr 2011
Location: Geraldton
Posts: 751
Thanks: 1
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
need help

The battery voltage drop cranking is normal and you already know the FICM voltage drop isn't. The batteries tested "good" even though one was a little low on CCA (idk how low it would need to be for them to replace it under warranty) so fix the FICM. Is your battery voltage coming up to 14.4ish after 30 seconds or so running? If not you could have an alternator issue.

Sent from Free App
Reply With Quote Quick reply to this message
Old 02-04-2013, 06:34 PM
Powerstroke Techie


Join Date: Nov 2010
Location: South Fayette/Pittsburgh PA
Posts: 5,763
Thanks: 33
Thanked 136 Times in 123 Posts
Feedback Score: 4 reviews
we can't just replace batteries at will anymore. we have to hook them up to a charger/diagnostic tester and let it run it's course. It is going to try and recover the batt first and after that if it determines it's still not charging properly THEN it spits out a code and lets us warranty the battery.

you need a ficm by the way
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


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 02:02 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.