Starting to worry about my new FICM... - Ford Powerstroke Diesel Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 3 Old 01-29-2014, 08:51 PM Thread Starter
Join Date: Nov 2013
Posts: 68
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Starting to worry about my new FICM...

So I got a new FICM from Ed @ Nothing to fancy, just a new ficm with the "ultimate" warranty and the Eco-Tune in November 2013 of last year. I haven't really been to concerned about the FMP readings (Ed's reputation) but when I saw the Scanguage readings today I started to worry. Now granted, here in Indiana it's damn cold (today is the first day it hit 29 degrees in about a week). With that said, I was driving home today (about an hour drive), when I looked down at my guage and the FMP voltage was going up and down like crazy. At a stop light or stop sign, it reads 48-48.5 volts. When I hit the throttle, whether it was slowly or a kick to clean out the turbo (traffic jam), the FMP dropped to 46.5 volts at one time, then repeatedly hit as low as 46.5-47 volts on other occasions. The truck has new Interstate batteries and a 130 amp alternator that according to the Scanguage2 is running anywhere from 13.6/8 at idle to 13.8/14.0 while driving. Should I be worried or what is the actual difference in FMP voltage reading s that I should be getting used to? My fear is that at 46.5 volts, I am getting close to the "fall below 46 volts" everyone talks about.
rhillman75 is offline  
Sponsored Links
post #2 of 3 Old 01-29-2014, 09:19 PM

Dave's Avatar
Join Date: Nov 2006
Location: Trempealeau, WI
Posts: 31,774
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 132
Thanked 177 Times in 157 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Dave
Thats perfectly normal. Its 45v you cant drop below. Although 29 isnt that cold by any means.

Sent from App

2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
Dave is offline  
post #3 of 3 Old 01-30-2014, 04:03 PM
Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
Posts: 4,217
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 62 Times in 58 Posts
Feedback Score: 0 reviews
I wouldn't worry too much about an occasional spike or dip. Now if it begins to happen often that is a horse of a different color.

Lord I shall lead them to the water but I will not try to make them drink
dannyboy950 is offline  
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:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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

For the best viewing experience please update your browser to Google Chrome