Ok I've searched and can't find this exact issue. My truck starts fine, runs fine just has no power whatsoever , it's like driving a stock 6.0 maybe a little worse. In June I was towing a friends camper and the truck was towing like a champ, plenty of power! On a long hill I noticed the truck was slowing down as I climbed the hill even with pressing the pedal more. I looked in my side mirror and saw a ton of black smoke. So I matted the throttle, the truck would down shift and the smoke would clear and it would speed up. It just wasn't the same power that it had. Ever since my truck just has no *****, I've been thinking a stuck turbo but I'm wondering if that could happen so suddenly. I bought a Dashboss and my FICM is good, my ICP,IPR readings seem good. Truck doesn't blow any smoke when I drive it. It almost feels like someone removed the turbo, it moves but it just doesn't sit you back in the seat anymore. I hate driving the truck now. I plan on cleaning the turbo when I can, still recovering from a triple bypass and it'll be to cold out when I'm healed enough, so it will be Spring until I work on it. So I'm hoping it might possibly be something not as major to fix, like a sensor or something. My trucks an 04' ( early build) blue fuel spring, cat back exhaust with empty cat, air intake, SCT w/ Innovative tunes. Just changed both fuel filters and cleaned EGR a couple months earlier, I don't drive the truck much since I have a company vehicle. Thanks guys!

 

Any codes? Do you show boost and if so how much boost will it make? Does the VGT% ever hit 15 or 85% while driving?

 

I forgot to mention my Dashboss is showing no codes and it shows me getting up to 21lbs boost when I punch it and my vgts go from 85% to I think 15% if I remember correctly.

 

You can take a shot at unplugging the EGR and driving it, see if anything changes.

 

lol just tried that yesterday to no avail! Actually that's not 100% true, the truck did seem to build some boost yesterday but nothing like it should.

 

The EGR could be stuck and not in the full closed position. Just trying the easy to do things first since you had surgery. SCT turns Off the EGR, mine is still there but welded in the closed position.

 

I was actually wondering about that. I'll have to pull it out and give it a check see. I had it unplugged for a while a couple weeks before my towing I plugged it back in. Thanks for the input.

 

Since we're talking about easy fixes right now, what's your EBP sensor showing? Sounds like what mine was doing a while back and I had a bad EBP sensor. It was reading 43-44 psi all the time. Replaced the sensor and cleaned the tube and all was good after that.

 

Map, BARO and EBP numbers at key on engine off, idle, and 2,500rpm will likely tell ya what's happening. 9 numbers, let it warm up before taking the readings.

 

Awesome I'm definately going to give these a shot tomorrow and I'll post the readings, thanks

 

Ok so I just checked out what you guys told me to here's the results
Engine off
EBP- 14.9
Bar Press- 29.8
Map- 29.5

Idle
EBP-18
Bar Press- 29.8
Map- 29.5

2500 RPM
EBP- 30.8
Bar Press- 29.8
MAP- 44.0

Hope this helps because I have no clue what that all means.
Thanks Again Guys!

 

At key On/engine Off, it should be within 0.5 PSI of BARO and MAP sensor pressure signals.

 

So your saying it's a bad EBP sensor? Please

 

Good place to start, check the wiring and tube to make sure it is clean.

 

I shoulda posted this link for ya earlier. It's spreadsheet listing what all the sensors should read. Very handy! I recommend saving a copy or even printing it out and keeping it in the truck. https://www.ford-trucks.com/forums/a...1&d=1364848489

EBP (exhaust back pressure) is listed as EP (Exhaust pressure) on the sheet. It looks like your key on reading is correct but it jumps up on the other two readings when the engine is running. Would make it seem like exhaust is stopped up (or sensor/reading is wrong).

BAR (barometric pressure) at 29.8 doesn't make any sense. Operating range for it is 50-120 in kPa and 7.3 to 17.4 when measured in psi. So the weather is really weird there (or sensor/reading is wrong). It is behaving correctly as it didn't change when you cranked the truck.

Likewise MAP (Manifold Absolute Pressure) is also wacked out. 29.5 isn't in range for kPa, psi, or volts.

I'd go back and check the setup options on your monitor. (I forgot what kind of monitor you're using) I would say it's possible just looking at the behavior of the numbers you posted (even though the values are wrong) it may be worth cracking the exhaust pipe loose at the flange under the truck and see if it picks up some lost power. The converter may be clogged. Kinda rare but possible.