lack of power on my 6.0litre

[knezfx]

i have an 07 6.0 litre, owned it for 2 yrs, and its stock. last little while ive noticed my power going down, when its cold it doesnt accelerate well and has trouble shifting. when it does get goin and i stomp on it a bit it will shift smoothly but wont accelerate and bury you into the seat like it did when i first got the truck. all maintence is up to date. i unplugged egr with no difference. I took to ford before my warranty was up and all they did was an egr replace as it was puffing black, but i never got my power back. my warranty is now up and any help would be great before i just hand my truck and my arms and legs over to ford.

the mileage is still great on the truck as I put on 950kms on the truck on the highway and burned 130 litres.

[Lilpooh]

Welcome to the org!!

When you stomp on the go pedal, is it throwing out any smoke? If so what color?

[knezfx]

thanks, i figured this is the best way for all my diesel problems.

It doesnt puff anything on acceleration, only time it puffs is on start up and thats only for a second or 2 when its cold, blue smoke. thats the other area i have problems, it takes a good 3 or 4 seconds of turning over for the engine to fire when its cold, but whats odd is when im at higher altitude it fires almost instantly, ive never heard of this prob on a fuel injected engine.

[Lilpooh]

I know this link says "no start conditions" but most of this info can also cause a "hard start condition", your gonna need to test and try these ideas. Start by pulling up and DTC's, then take it from there.
Troubleshooting a No-Start condition

[Fox'sFord]

As far as it being cold and shifting, I believe that is part of your strategy, mine does the same thing it seems to hold the gear just a little longer when cold. Everything else could be as simple as a little injector stiction, or it also sounds like your ficm is heading out. Do you have a monitor?

[jetjock15]

just food for thought, but what is you milage? an 07 with less then 100k still under warranty. ive had two injectors replaced under warranty, just take it to your dealer and tell them you symptoms, no work is easier then free work and parts! but they do charge a $100 deductible/fee

[PGreenSVT]

hard starts and cold natured are signs of injector stiction or a FICM going south. Check your FICM voltage and make sure it stays above 46v when cranking and running. (check when it is cold). If your FICM is good throw a couple bottles of Rev-X in your oil.