Electrical limp mode?

captainr0ck · #1 (**permalink**) 11-29-2011, 02:51 AM

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

Sent from my Autoguide iPhone app

Twin Terrors · #2 (**permalink**) 11-29-2011, 04:58 AM

Same thing happened to me, I need my FICM replaced and both batteries

captainr0ck · #3 (**permalink**) 11-29-2011, 06:11 AM

Damn. I have brand new batteries and just had my ficm reflashed at ford...

Sent from my Autoguide iPhone app

**WarChild** · #4 (**permalink**) 11-29-2011, 06:40 AM

Test your FICM and you will know for sure if its bad.

**NYC F-350** · #5 (**permalink**) 11-29-2011, 06:59 AM

Sounds as though it could be a failing/failed alternator to me.

captainr0ck · #6 (**permalink**) 11-29-2011, 07:31 AM

Thanks guys I'll check those out.

Sent from my Autoguide iPhone app

captainr0ck · #7 (**permalink**) 02-09-2012, 04:08 PM

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

captainr0ck · #8 (**permalink**) 02-16-2012, 03:19 PM

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.

Sent from my Autoguide iPhone app

ryan.sampson · #9 (**permalink**) 02-16-2012, 03:35 PM

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

**dee004** · #10 (**permalink**) 02-16-2012, 05:50 PM

Quote:

Originally Posted by ryan.sampson

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.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Powerstroke.org Advertisement