power loss or miss

[buck 01]

I have a 2004 f250 6speed 6.0. When I'm driving at a steady speed 25 or 55 sometimes I get like a miss or power loss. And sometimes when I'm pulling off from a stop or slowing down to pull in a drive way I get a loss of power but when I press on the go peddle it will pick up speed. The truck has 62000 on it and just changed oil and filter. I changed fuel filter's on last oil change. It seems to idel fine and run fine when I get on it just at steady speed with the fuel peddel pushed a little. Good it be fuel filters or egr.

[buck 01]

Come on guys any ideas???

[HAM_RADIO_MAN]

To best help you troubleshoot any problems you might be having with your truck over the Internet the members of this group need specific information. You will have to take some measurements, scan for codes, gather all the PID data from the PCM you can.

Without a physic connection to your truck solid data is the only tool we can use to help you with a solution via the web.

Here are some of the most useful bits of data to help us help you. Sometimes photos do a great job of helping explain the problem and helping the next guy to see your post solve his problem.

Trouble codes?
FICM voltage when cranking and running?
ICP and IPR data ?
T-shooting you have done ?
Have you load tested the batteries to be sure both of them are good?
Maintenance and repair history ?
What was changed last before your problem started?
Does it act up when hot or cold or both?
Were you towing or heavily loading your truck ?

CHECK OUT THIS LINK FOR SOME GREAT T-SHOOTING TIPS.
No start issue? Look here.

[HAM_RADIO_MAN]

How long have you had the truck? Is it a miss or power loss? Codes? CEL? Are you using Motorcraft filters? What oil is in it? Is it building boost OK. Your post is pretty vague. This almost sounds like you are describing the normal operation of the truck. At a steady speed under light load or at low speed the turbo will not be building much boost and you will be down on power till it spools up and starts making boost pressure. This is called turbo lag and is normal. Please get back to us with more data to help you.

To answer your last question: Yes, a dirty EGR valve will hang open and cause power loss, light smoking and poor drivability. It takes about 15min to pull the EGR valve and clean it.