I've noticed a loss in power in my 05 6.0.... today when i went to start it i turned the key to the on position and waited like always, the glow plug light came on the went off after a couple of seconds. but i noticed i didn't hear that buzz sound i usually hear before hittin the start position and my truck cranked and cranked and cranked for about a minute (4 15 second intervals) without firing one single bit or semming like it was trying to. i had to turn the ignition on and off a couple times before it would start... last night i added some diesel fuel supplement + cetane booster to my tank. before the truck gets to about 150 degrees it has no power at all and seems to have a bit of a miss and i'm noticing that at running temp. (190 degrees) i don't have the power i had a couple weeks ago

Any ideas as to what could be my problem? Thanks for any help!

 

icp sensor

 

Do you have any way to check for DCT codes? It may also be a glow plug controller, or possibly FICM issue.

 

yea my edge pulls codes, i'm gettin a code that says FICM circut voltage low.... but it only throws the code when the truck gets turned off and the turbo timer keeps it running....

 

What code are you getting? Mine is throwing P2552 all the time, of course the dealer can't find any issue with it on there test equip.I was getting P0611 before they changed my head gaskets and glow plug control module. What voltage are you getting from your batteries? If you have a multi-meter ; unhook one of your batteries so you can check each individually. once you check batt. voltage, hook em back together,start the engine, and take another reading on one of them.Without the truck running they should be 12 volts or higher, once the truck is running they should read around 14 volts.

I was doing some research on FICMs and came across a procedure for checking your FICM voltage, but before we get into that you have to have proper batt. voltage, and a good working charging system.

 

batteries are pretty good and it runs at 13.8 when engine is running... I think it might be my HPOP or the injectors the other day i added some power service diesel supplement and it seems to be running better... i was thinkin about tryin some 2 cycle oil in the fuel to see if that lubes up my fuel system and cleans out the injectors and helps them run smoother... any advice on that?

 

Why do you think its the hpop? If the only code your getting refers to FICM. You first stated that you weren't hearing the injectors rattling anymore. This would lead me to think the Fuel injection control module has some sort of problem. An article I read has a way to test hpop, but it sounds kindof involved.

Diesel Technician Society

What was the code that you did pull?

 

Okay i have have been goin off hunches and stories from other people that have lead me to what i have been saying. My edge is pulling 2 codes. u0155- which is lost connection with instrument cluster and p1378- which is - ficm supply voltage low. both of those areonly tripped when my turbo timer keeps the enigine running w/ ignition off... common edge code when using the turbo timer.

But last night i got something real to go off of when i hooked a scan tool up to it and ran diagnostic tests. i pulled this code that my edge wasn't and maybe you can help me with this...

p0261- injector circut low cylinder 1

If you know how to fix this or what part it is or can even narrow it down to my problem i would greatly appreciate it.

Thanks for your help so far!

 

Unfortunately the only experience I have to work with, is my own bad luck. My truck recently had P0273, P0275, P0335, P0611. I took it to ford dealer,ended up head gaskets, and a glow plug control module. Fortunately it was still covered under the 100K engine warranty. But previous to this, I had just changed batteries. (a week prior to going to ford) Once it was in the shop the first thing they said I needed was a new alternator.over $400 'cause my voltage was still to low to diagnose. The day I picked it up and ever since I've had P2552 on my livewire.FICM Issue. ford hooked it up again, still can't pull any codes, Still hard to start, Had to jump it to get home this afternoon. Still sounds like a FICM issue. I'm not sure if your warranty has expired yet. But if so here is a thread from another site that might be helpful. It's my next step.


6.0's, FICM's and Cold Start Problems - Powerstroke Nation

http://www.aeswave.com/images/Produc...-DIAGTESTS.pdf

 

I'm at 115k so no warranty but i need to figure this out because i have lost power and i'm getting shitty mileage now which is not cool with the price of diesel!!