I have been on the org for quite a while now just searching around and researching on the 6.0. well i finally bought mine last weekend! i also went to auto zone today and picked up the scan gauge II... after getting the gauge for the FICM it read 44-44.5 for a couple seconds before a cold start and for a couple after it started then it jumped right up to 47-48... I'm pretty sure i know the answer,but does this mean a new FICM for me?
my second question is about the "buzz" when the key is on-engine is off... my truck will do it for about 2 or 3 seconds then stop. if i listen closely after it stops, it seems like i can hear it "flicker" like its trying to come back but won't... I'm really hoping this doesn't mean more money lease:
also, is says that my crank and cam position sensors are not in sync... could this have anything to do with the FICM???
any help is greatly appreciated! i have learned so much from you guys already on here! thank you very much. lots of good people on here!
I am going to have them individually tested today... it just seems weird to me because they charge 13.7v while the truck is running and 12.1v or maybe just a tad lower when the glow plugs are cycling. but before i start the truck, with the key on and cranking, they are down to between 9 and 10v. would that be enough to pull the FICM down to 40v?
well, i got them tested individually. he said they look like brand new batteries. plus the date sticker on them is 6/12 so they are fairly new. they are motor craft. so i think the batteries are not really the issue. i guess its a rebuilt one from ficmrepair!
Weak batteries or a bad FICM will cause the voltage drop. But one thing to note is what was the EOT (engine oil temp)? The load placed on the FICM will vary when the oil temp is colder than when its warm.
The buzzing is the spool valve in the injector operating. The signal is sent from the ficm based off EOT. This is called inductive heating, it will warm the oil inside the injector solenoid body to create better cold start conditions.
Weak batteries or a bad FICM will cause the voltage drop. But one thing to note is what was the EOT (engine oil temp)? The load placed on the FICM will vary when the oil temp is colder than when its warm.
That is great information! the FICM voltage with the oil temp cold (about 40 degrees) will drop down to about 40v and any colder than that and it may even drop to the 30's voltage wise...
ed a ficm repair.com is pretty good but you have to remember that is just a repair. IMHO save yourself the $ in the future and get the bullet proof diesel FICM, it is a completely re-engineered unit using military grade electronics. With their new cnc billet case it reduces heat up to 40% compared to the stock unit, also the mother board is twice the thickness which makes a huge difference. they will have their unit at your door way faster than ed can which in turn leads to less down time hope this info helps you out
i would if i had the extra $$$ now but unfortunately, i do not at the moment :doh:
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