Electrical limp mode? - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 11-29-2011, 02:51 AM Thread Starter
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Electrical limp mode?

Hey guys,
This morning on my way to work all of my gauges dropped out and the truck went into a limp mode. Shifts hard, no power, won't really let me accelerate at all and it sounds much different. Any ideas??
Thanks,
Rocky


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post #2 of 14 Old 11-29-2011, 04:58 AM
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Same thing happened to me, I need my FICM replaced and both batteries
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post #3 of 14 Old 11-29-2011, 06:11 AM Thread Starter
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Damn. I have brand new batteries and just had my ficm reflashed at ford...


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post #4 of 14 Old 11-29-2011, 06:40 AM
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Test your FICM and you will know for sure if its bad.

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post #5 of 14 Old 11-29-2011, 06:59 AM
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Sounds as though it could be a failing/failed alternator to me.
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post #6 of 14 Old 11-29-2011, 07:31 AM Thread Starter
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Thanks guys I'll check those out.


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post #7 of 14 Old 02-09-2012, 04:08 PM Thread Starter
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Brought it to the dealer after last post and they said everything was fine.... Unfortunately, the truck did it to my wife today. I'm not sure where to start.. check volts on FICM? Anyone know what is goin on? Thanks

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post #8 of 14 Old 02-16-2012, 03:19 PM Thread Starter
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Tow/haul and check engine flash intermittently on occasion. The gauges go out and the truck shuts off. Start it back up and the gauges are all down and it's in a "limp" mode. No acceleration or gear change and shuts of again. I have no clue what's goin on 3rd time it's happened in a month now..... Any help would be greatly appreciated guys.


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post #9 of 14 Old 02-16-2012, 03:35 PM
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here's a guide to reading voltage.. its real easy

http://swampsdiesel.com/site/how_to_...latageTest.pdf

mine was fine key on, and turning, but once idling it dipped into the 30's.. thats where i'd start. i had a bad alternator that was putting out like 11 volts and it caused a chain reaction through my truck.. dealing with injectors now.. but thats a different story

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post #10 of 14 Old 02-16-2012, 05:50 PM
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Quote:
Originally Posted by ryan.sampson View Post
here's a guide to reading voltage.. its real easy

http://swampsdiesel.com/site/how_to_...latageTest.pdf

mine was fine key on, and turning, but once idling it dipped into the 30's.. thats where i'd start. i had a bad alternator that was putting out like 11 volts and it caused a chain reaction through my truck.. dealing with injectors now.. but thats a different story
Thanks Ryan,
Good article for testing the FICM voltages.


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