Charging, FICM and glow plug issues - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 06-02-2013, 03:25 PM Thread Starter
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Charging, FICM and glow plug issues

Hey guys here's my problem.
This morning truck flipped all 8 glow plug codes P0671-P0678. Truck still started and ran fine. Just now alternator was showing 16volts+ on my edge which is usually a volt lower than that on the battery. It lasted for 15 minutes and flipped a high ficm voltage code. Not sure what it could be. Alternator was new last year but still thinking maybe voltage regulator. Any suggestions would be hugely appreciated. Thanks ahead of time guys!


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post #2 of 14 Old 06-02-2013, 04:44 PM
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Yea 16+ volts is not good, most things are designed for 15.5 volts max so be carefull and get that thing replaced before you need a new stereo, head lights and pcm computer.
Check all the battery connections and the output on the alt along with the grounds. May not know what voltage it's putting out if there are some corrosive connections


2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
Atlas40 or Atlas80 Ficm Tune
CAT EC-1 Coolant, IPR Coolant filter
BPD Waterpump, BPD way of thinking
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 amp alt
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
All riding on some Fatty-Daddy 38/15.50/18 Toyo's
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post #3 of 14 Old 06-02-2013, 05:02 PM Thread Starter
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Quote:
Originally Posted by mhatlen View Post
Yea 16+ volts is not good, most things are designed for 15.5 volts max so be carefull and get that thing replaced before you need a new stereo, head lights and pcm computer.
Check all the battery connections and the output on the alt along with the grounds. May not know what voltage it's putting out if there are some corrosive connections
Okay thanks for the input. I've checked all my connections and they are all good and free of corrosion. I will replace the alternator first thing in the am. Hopefully that's all it is. Weird that all these problems happened together.


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va
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post #4 of 14 Old 06-02-2013, 06:12 PM Thread Starter
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Charging, FICM and glow plug issues-imageuploadedbyautoguide1370225499.805120.jpg

Just a picture of what my edge is reading. That was at a stop light at an idle.


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va
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post #5 of 14 Old 06-02-2013, 06:26 PM
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I would put a Fluke voltmeter on it too just to make sure nothing is out of whack and you don't waste any money on a new alt. 14.4 at idle is high unless you are pulling big power from something.


2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
Atlas40 or Atlas80 Ficm Tune
CAT EC-1 Coolant, IPR Coolant filter
BPD Waterpump, BPD way of thinking
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 amp alt
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
All riding on some Fatty-Daddy 38/15.50/18 Toyo's
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post #6 of 14 Old 06-02-2013, 06:29 PM Thread Starter
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I will test it next time it does it at the alternator. Weird thing is that it only lasts 15minutes give or take. I have big stereo but it wasnt playing so it shouldn't still be drawing. Checked all connections to amps as well just to be sure


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va
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post #7 of 14 Old 06-02-2013, 08:14 PM Thread Starter
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Just tested voltage on the alternator on startup after it sat for a while and got a 16.5 volts. Still flipping all 8 glow plug codes.


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va
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post #8 of 14 Old 06-03-2013, 08:45 AM Thread Starter
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Update:
Replaced alternator and still over charging. Load tested both batteries independently and are good. Tried swapping out the Glow Plug Control Module and still overcharging. Without the module plugged in the truck will not overcharge. Without the module plugged in my edge will not read any boost neither will the dash guage.


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va

Last edited by dcbutcher; 06-03-2013 at 10:15 AM.
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post #9 of 14 Old 06-03-2013, 01:28 PM
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That is crazy sounding ?? Could a glow plug be pulling crazy power for some reason ?
Perplexed with the 15 minute thing too. Why would the glow controls be engaged for such a long period. Have you looked at the amperage draw ??
How is the ground wire at the chassis?? There should be a cable from battery ground going the fender, make sure it's in good order. You may try throwing on a additional ground cable from block to chassis to rule out a ground issue.
Usually when electrical stuff goes whacky it's ground related. Look here first.
You have used a Fluke or another voltmeter to confirm? correct ??


2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
Atlas40 or Atlas80 Ficm Tune
CAT EC-1 Coolant, IPR Coolant filter
BPD Waterpump, BPD way of thinking
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 amp alt
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
All riding on some Fatty-Daddy 38/15.50/18 Toyo's
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post #10 of 14 Old 06-03-2013, 02:45 PM Thread Starter
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Problem solved. The fuseable link from voltage regulator was bad. Not sure how it managed to set off glow plug codes. It also still had power on both sides of link. Weird but it's fixed and a reminder to check the simple things first. Thanks guys!


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2005 F350 6.0 King Ranch
SCT SF3 w/ Looney Wild Tune
Air Dog 2
XDP Fuel Sump
EGR Delete
Head Studs
4" Turbo Back
Edge Insight
Cat ELC coolant
Garret Powermax GT3788va
dcbutcher is offline  
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