Ford Powerstroke Diesel Forum banner
1 - 1 of 1 Posts

·
Premium Member
Joined
·
2,140 Posts
Hmm, reading up on FICMs and found that weak batteries can be a factor, so I decided to focus some attention there.

A "cool" start at lunch after sitting 4 hours in 30-35 degree weather and I caught a glimpse of 10.6v during cranking after 12.3v koeo. Those both seem low to me. 14+ volts while idling, so I think the alt is ok. I guess I need to get them load tested.
Yep, have the batteries load tested and go from there.

In my opinion anything less than 47V would be a sign of a bad FICM Power Supply.
 
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top