gotta an o5 f150 5.4

dont ask why i did it but up on the firewall behind the battery is a gray box. computer i think???. i unplugged and plugged back in the plug on the far left and now my truck idles realy rough and has no power when i put it in gear. and won't go over like 20mph.

what did i do

what do i need to do

and help fast i gotta go to work tomarro

 

unplug the battery for half an hour, reconnect and see if it still does it.

 

you unplugged the pcm
if you did it while the key was on you prolbably fried the pcm

try disconnecting the battery like patman said and if that doesnt work you may have to take it in to get looked at

 

everything is OOOOKKAAAYY ha. i just cut the truck off and cranked it back up and it ran fine.

sorry i jumped the gun