FICM Helps please

[T Bone0416]

well the old 6.0 has been acting crazy lately so checks the ficm volts and when starting and at idle it reads 42 volts. so i guess its time to rebuild. who should i send it to and should i get it tuned? will i gain any from it? 48 or 58?

[elm302]

I didn't notice a lot with the 58. Look on ebay there's a lot of companies that do it cheap. Or ficmrepair.com

[T Bone0416]

ok thanks ill look

[trickynicky17]

go to ficmrepair.com just got mine back from there on Friday truck runs great now

[Lilpooh]

Weak batteries can give a false reading.

[dabeeler]

Originally Posted by Lilpooh

Weak batteries can give a false reading.

Would weak batteries cause the ficm to be below 40 volts till the vehicle warms then drop to 46-47 when vehicle is given little extra throttle?

[Lilpooh]

Originally Posted by dabeeler

Would weak batteries cause the ficm to be below 40 volts till the vehicle warms then drop to 46-47 when vehicle is given little extra throttle?

It could, this is why when you test the FICM and have lower than normal FICMv readings,you should always have your batteries and alternator tested to be sure they are in tip top shape.

[tnet69]

I sent mine to Swamps deisel, got it back in four days. I had it converted to the 58volt and the PHP tune put on it. I noticed a slight difference, I guess I was hoping for more though.

[417brobinson]

Ficm repair.com is who I just went with. Ed is very good to work with and great communication.

[kdogg85]

I got the swamps 58v with tune and noticed a hair better behavior. Nothing otherworldly, but am happy.