I got a 04 5.4 fx4 screw. Has 171k miles on it. I'm noticing it has became weak like dogish. No check engine lights ect truck just feels weak what could be going on? I got a rattling noise to only before operating temp, and the first 2 min while in drive while accelerating. Once truck gets warm it fades away won't do it again until truck cools completely down? What am I hearing

 

sounds like time to do plugs and coils

 

Plugs and coils done in the last 10k miles

 

If the charge motion plates aren't opening will it throw a cel?

 

I got torque converter shudder on take off to like bad.

 

notastockdohc, my truck was running pretty sluggish for a couple weeks, couldn't figure it out because it started and sounded right. I had to change my brakes and after doing the rear brakes, the truck had all of its speed and power back. No signs of the brakes dragging until I finally ended up doing the brakes but apparently they were dragging enough to slow the truck down. I hope you figure it out, let us know.

Tom

 

I got my code for "intake manifold runner control stuck open" cleared by half a bottle of seafoam through the brake booster line. That code popped up 4 times.....hasn't came back. 10k later after Seafoam.

 

Were the plugs Motorcraft?

 

Not sure they are 1 piece design I bought the truck with plugs done I did the coil pack oe ford

 

i had similar type problems with mine as well