Hey guys am new here,
I have a fx4 5.4 2004 and sometimes it has a loss of power on the first and second shift...?The 3 mechanics just couldnt fix it.. they change the speed sensor.. the throttle body.. turbine speed sensor.. they reset the computer and its still the same.. like I said.. it just made it sometimes.. on freeway runs great.. feels like no power for a few seconds and then comes again.. they just told me send it to the dealer.. it has 150000 miles.. Help! Dont know what else to do!

 

My guess would be tranny related. My 04 kinda did something like that. After a bit my tranny went out, after it got rebuilt, it hasn't done it since. (Now that I think about it)