03 EXCURSION 6.0 PROBLEM NEED HELP ASAP

[SHARPCURTIS]

I have a 2003 excursion 6.0 that needs help bad.The problem im having is when im going down the road and the converter locks up about 50 mph or 1800 to 2200 rpm, when i try to accelerate slowly it surges really bad almost like jolting but as soon as i kick it down it takes off. I also have this problem when im cruising about 70 and accelerate to go up a hill it surges as well..I thought it could be the egr so i unplugged it and still have the same problem.I took it to get scanned and obviously i had codes for egr which was expected but these are all the codes that came up.. p1780 which is trans control switch.What doesn't make sense is my tow haul button works perfectly, the other code is p2284 which is icp, can this cause surging like i explained. next code is p0102 maf. the weird thing is when i have it to the floor it runs really strong through every gear. please help guys.thanks

[SHARPCURTIS]

bye the way this happens weather its cold or hot

[HAM_RADIO_MAN]

First of all If your EGR valve is giving you problems the best thing to do is remove it and clean it. This will take 15 min and cost a can of carb cleaner. If that doesn’t fix it then check the FICM voltage. If it is less than 48 volts when cranking or running you found your problem. Let us know what you find and we can go from there.

[SHARPCURTIS]

how do i check the ficm voltage?

[HAM_RADIO_MAN]

DTS Articles - 6.0L EGR Valve Cleaning

FICM repair/upgrade

Fix UR FICM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

These links should provide some insight. If you have a 7 pin FICM google ( 6.0 FICM VOLTAGE TEST ) and you will find all kinds of good info.

I would highly recomend getting a Sacngauge2 from bullet Proof diesel to help with your data gathering. Please read the links in my sig for more reason to get an engine monitering solution.

[NYC F-350]

Any mods done to your engine?
Have you checked fuel pressure?
Do you have any REAL gauges? (not those idiot lights on the dash)
There are so many things that could cause this, it won't be easy to pinpoint without testing.
I would be interested in seeing what your ICP pressure and your IPR duty cycle is when it is bucking. You can find those readings if you were to purchase the Scangauge2 and properly program it. You can get that at most autoparts stores, or you can get it already programmed from bulletproofdiesel dot com.
Fuel pressure readings can not be had without purchasing a fuel pressure gauge. As a preventative measure, I would replace the fuel pressure regulator spring. You can get that from your friendly local Ford dealer or through Tousley Ford. (Tousley 800-328-9552) Order part number 6E7Z-9C165-B, which should be under 40 bucks.

[SHARPCURTIS]

i tested the ficm and with the key on the on positin it reads 47.8..the problem almost seems trans related is there anything that can cause this problem trans related

[NYC F-350]

There are three times you check the FICM voltage.
Key on-engine off
cranking
engine running

How to check your FICM voltage

[flipp29]

I had same problem. Did the EGR cooler delete and Problem went away!
My truck would run fine till it got hot then forget about it.

[SHARPCURTIS]

Ok guys so i still use this truck as my daily driver. So it normally runs fine except for the shuttering at certain rpm's, so i brought it home and it sat for about 2 hours, i went to go back out with it and when i started it, it sounded like crap sounded like it was knocking pretty bad but no smoke at all. I let the truck sit for another hour and i went back out and started it and just took it down the road for a little test.The truck stumbled a little at low rpms but when i throttle into it it runs fine.So i decided to bring it to my mechanic and while i was driving it on the hwy at 70 i floored it and the son of a ***** took off like a rocket i was at 95 in seconds.Now keep in mind this truck is bone stock and has never felt like this since i owned it.From a dead stop i would punch it on dry pavement and it feels like it wants to break the tires loose.When i got to my mechanics i shut it off and then restarted it 10 min later to take for another test ride and the truck felt like it normally did..
what can cause this