This problem is getting worse and the engine runs rough(2002 4.7) it has loss of power and bogs down under hard acceleration, no codes show, no check engine light ????
anyone ever come across this ?
Thanks, B

 

What transmission do you have? Give us as much info a you can. Has it overheated at all?

 

It's the automatic 4x4 fluid is full and looks very clean, single cab, short bed and I did have a coil pack go a while ago, but it set off the check engine light, I'm not getting any light with this and thought to get it read in case the light burnt out and nothing?

 

Also never overheated.

 

I don't want to start replacing sensors, coil packs, etc, and throwing money at pieces that may be working fine.
Any ideas what it could be ?
Thanks, B

 

you can learn a lot by pulling the plugs out and looking at them..

 

Last tune up??