Friday I was driving around had about 40 miles on the drive. I pulled up to a light and the ac quit working and truck started to run like a bad plug.
I stopped and did some shopping came out it was still doing same thing..no air it wasn't kicking on but running rough the as I was driving home the ac started working and the engine was running smoothly. Sat everything OK then as I left home depot. It started again. I'm thinking it has to do with maybe the relay acting up or going bad. Any ideas I bought a new relay but its 115 outside ill check it later I have two big fuses in the box under hood and a couple of blade fuses one small fuse outside the box. Which one is the ac relay lol

 

You need to describe your vehicle in detail (down to the trim package) so that your request can be accurately addressed

 

2004 f150 fx40

 

2004 fx4

 

You do know you can edit your post... no need to repost. What motor is in your truck ? That's what Jimboy asked you to post.

 

so you have an answer to the question?

 

Do you have a motor in your truck ?

 

please excuse yourself from this thread you apparently are just here to troll.
For your reading edification:
http://www.trucktrend.com/truck-reviews/112-0407-2004-ford-f-150-fx4

 

short in cop wiring 4 cylindet