FICM

[qcfarmer]

I have a bone stock 03 excursion that the ficm just went out on. I was wondering if there are any benefits to running a modded ficm compared to a stock ficm on a stock truck. Thank you

 

[PowerStrokeEnginuities]

better cold start, faster injector actuation and a lil umph on the pedal

 

[Jarrod B]

Tuning wise, it will help on the start up and go and see that up to 1500 rpms ish.

as for the 48/53/58 volt. not much gain. 48v is good enough.

 

[Derek@Vision Diesel]

58v's in stock and ready to ship!

 

[qcfarmer]

Just want to confirm its the ficm. KOEO I have 48v when I start it it drops to 28v and truck runs rough.

 

[fordfreak4life]

Just want to confirm its the ficm. KOEO I have 48v when I start it it drops to 28v and truck runs rough.

For sure the ficm

Sent from my Milestone X2 using Tapatalk 2

 

[strokin6L]

yup FICM is bad. You can have a FICM that'll read 48v with KOEO, startup and idle....and it'll still be bad, even though it reads 48v. For some reason the FICM's half shell will go bad, but still read normal. Had seen a few trucks like this and ford replaced just the half shell and then all was good.

 

[Derek@Vision Diesel]

Would also agree the voltage is not always the answer. But if it shows low, it DEFINITELY is bad.

Would suggest something other than a Ford unit though. Give us a call if you need any thing, we have them in stock.

 

[Kbryant777]

My truck starts like a champ in cold weather with a tuned ficm and has better throttle response then stock

 

[qcfarmer]

Update: installed ficm from a running truck and still have the same problem. The truck starts and runs fine when cold and as it warms up it starts to idle rough and lose power to the point that it will stall and barley start and then stall right away. I haven't had a chance to volt test the ficm but it did come out if a running truck. What else could it be? HPOP related? Injectors? My brother has an Insight to monitor his truck maybe we should hook it up to the Ex?

 

[bboteler]

try the insight, when did you change your fuel filters last and whats your fuel pressure?

 

[qcfarmer]

Filters have been a while (7-8 months ago). I will try to get the insight hooked tonight or tomorrow.

 

[bboteler]

I've seen filters cause similar issues but the ficm when running should maintain 48v.

 

[qcfarmer]

Ficm from friends truck maintains 48v. Truck still runs rough and loses power until it stalls out.

 

[strokin6L]

just because it says 48v doesn't mean the FICM is good

 

[qcfarmer]

This is a brand new reman that he hasn't installed in his truck yet.

 

[Mdub707]

Sounds more like high pressure oil leak to me...

 

[strokin6L]

could be a number of things...injector, ICP sensor etc.

 

[Dave]

For sure the ficm

Sent from my Milestone X2 using Tapatalk 2

When FICM voltage is this low always always always individually load test the batteries and have the charging system tested.

If the batts are more than 4 years old. Replace em regardless of what a load tester says

 

[qcfarmer]

Update 2: took it to ford and they said its an injector (number 2) that stays open allowing compression to enter the fuel passage which starves the other injectors of fuel. He said he has seen it before. He suggests I change the injector and the one beside it and that should fix it. My question is should I do all 8 (truck has 420 000 kms) or just the two?