FICM good. But low voltage.. Any ideas??? - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 12-10-2011, 03:46 PM Thread Starter
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FICM good. But low voltage.. Any ideas???

I have swamps 58v FICM and my Edge Insight showed my voltage was around 40v on cold startup and would go up as truck warmed up. I checked manually with multimeter and it was low. I sent it to swamps and they said theres nothing wrong with it and to check my batteries, alt., connections and injector wire harnesses. I put it back in and when trucks up to temp it will only get to 47ish volts when it used to max the Insight out at 50v.

Anyone ever have this problem? Or any ideas? Thanks.

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #2 of 16 Old 12-11-2011, 12:04 PM Thread Starter
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well i just put new batteries in, cleaned connections, and checked alt. and still does the same thing.

any help on thing to check would help a lot. thanks

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #3 of 16 Old 12-11-2011, 12:12 PM
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Not sure why, but did you check and clean all the negative battery connection to the engine block. The pass side negative cable connects to the front of the engine block by the AC compressor, it has a issue of coming loose,corrosion, or damage.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #4 of 16 Old 12-11-2011, 01:24 PM Thread Starter
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thanks for the reply. i just went and took it off and cleaned it. still does the same thing.

any other things to check?

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #5 of 16 Old 12-12-2011, 11:07 AM Thread Starter
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Bump for any other things to check??

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #6 of 16 Old 12-12-2011, 11:15 AM
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Its the FICM if that all tests good.

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2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
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
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #7 of 16 Old 12-16-2011, 02:29 PM Thread Starter
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Well I swapped ficms with a friend and everything was good then put mine in and still low voltage. Swamps still think it's my trucks wiring but they would take another look at it if I wanted. So I sent it back to them. Im almost positive it's not my truck.

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #8 of 16 Old 12-16-2011, 05:15 PM
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I know its not your rig if the other FICM is good.

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2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
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
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #9 of 16 Old 12-16-2011, 05:25 PM Thread Starter
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That's what I told them. He said they tested it on the bench and put it in a truck and drove it a couple hours and it was ok. There's has to be something going on with it.

2004 F250 CCSB King Ranch
4" MBRP Turbo Back Exhaust
Insight CTS with Fuel PSI and EGT Sensors
SCT with Gearhead Tunes and more to come
Gryphon FICM Programer
IPR Gen2 EGR Delete
ARP Headstuds with OEM Gaskets
Sinister Coolant Filter and ELC
Redhead Steering Box
285/75R16 Cooper Discover ST Maxx tires

And the wish list keeps getting bigger!!
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post #10 of 16 Old 12-16-2011, 07:30 PM
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I have a stock FICM but it does act similarly. I've concerned about the FICM ever since purchasing the truck about 6 months ago. So I bought a Scan Gauge and began to monitor some of the critical values. What I noticed was that my FICM started low at 35v, but warmed up to 48v within 5 seconds or so. I don't have a CEL or codes and seemingly no issues, but still I'm concerned.
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