THEY PUT GAS IN MY POWERSTROKE!

[bigcountrysg]

Originally Posted by RYAN SHAE

Sorry for the caps. My computer at work stays on caps because everything we do has to be in caps. I just got used to it. Anyway, I thought that the FICM was a module that converts 12v to 48v. That is why, if your alternator is going out or if a battery is going bad it over works it and it goes out. I heard that they are really sensitive like that. Is that not right?

How are you going to go from 12v to 48v. The truck only has 2 batteries and operates on a 12v system. The two batteries are hooked up in series so it does not raise the voltage to 24v. The voltage stays at 12v.

Now if your batteries were hooked up parrell then it would be a 24v system like all the military trucks run.

FICM is Fuel Injector Control Module.

[SCUFFY828]

injectors should not be hurt , i have seen this at least 100 times, never had to replace an injector because of it

[firestroke]

You didnt by any chance get that truck at the nissan place in midland They are crooked SOB''s

[07stroker]

Originally Posted by bigcountrysg

How are you going to go from 12v to 48v. The truck only has 2 batteries and operates on a 12v system. The two batteries are hooked up in series so it does not raise the voltage to 24v. The voltage stays at 12v.

Now if your batteries were hooked up parrell then it would be a 24v system like all the military trucks run.

FICM is Fuel Injector Control Module.

The FICM does fire the injectors at 48V.........

[SCUFFY828]

i agree , the ficm can generate 48 give or take to the injectors , ive seen 50 volts with the scanner , just like the 7.3 , raises the voltage

[APEowner]

How are you going to go from 12v to 48v. The truck only has 2 batteries and operates on a 12v system. The two batteries are hooked up in series so it does not raise the voltage to 24v. The voltage stays at 12v.

Now if your batteries were hooked up parrell then it would be a 24v system like all the military trucks run.

FICM is Fuel Injector Control Module.

The FICM does in fact provide an injector driver voltage of around 48 volts. I don't know what the exact circuit is but I would guess it uses a charge pump circuit of some sort. I don't have enough experience with the 6 Liter trucks to know if their sensitive to input voltage or not. I'd be a little surprised if they were since most DC-DC converters are relatively insensitive to that but I've been surprised before. The FICMs also have a computer in them so it's possible that circuitry entierly unrelated to the driver voltage is sensitive to supply voltage and commonly goes out when there are charging system issues.

Scuffy, have you seen a connection between charging system problems and FICM failures?

[SCUFFY828]

Originally Posted by APEowner

The FICM does in fact provide an injector driver voltage of around 48 volts. I don't know what the exact circuit is but I would guess it uses a charge pump circuit of some sort. I don't have enough experience with the 6 Liter trucks to know if their sensitive to input voltage or not. I'd be a little surprised if they were since most DC-DC converters are relatively insensitive to that but I've been surprised before. The FICMs also have a computer in them so it's possible that circuitry entierly unrelated to the driver voltage is sensitive to supply voltage and commonly goes out when there are charging system issues.

Scuffy, have you seen a connection between charging system problems and FICM failures?

not because of charging system issues no, when i see the most ficms drop, for one , ive seen the most drop after the inductive heat flash , and two, from heat of summer

[RYAN SHAE]

No not the Nissan in Midland, but it was the one in Odessa. Nice truck. I love it. Just wish I would have got to drive it more than 2 days before all of this. I am also glad that I am not a complete idiot about these things too or they would screw me, but these threads are a life saver when you need info fast.

[RYAN SHAE]

When this happened, I had parked it after it running and idleing for about 3 hours. It was in the early morning 5am and about 60 degrees outside. When I went to start it at 10 am it was about 75. Any thoughts?

[RYAN SHAE]

Thanks Scuffy. That makes me feel better. I really don't think it had gas in it. I mean the tank is what 32 gallons and we put 30 gallons of diesel in it. I think that they were just trying to blame me so they wouldn't have to come up with anything out of their own pockets. The service manager said that I would have to pay for the filters and mechanic time. I told him the only thing I would be paying was for my lawyer to sue their ***. All of the sudden this FICM thing showed up? Funny how that worked.