I've got an '04 supercab with the 4.6 and it idles really rough...been doing it for as long as i can remember. What could be causing this?

 

Have you cleraned your MAF?

 

i also have a 2004 f150 4.6l supercab and was running real rough for awhile then all of a sudden my engine light came out and it would shut off randomly. i ended up taking it to my buddies shop and all he did was clear the codes and clean the maf and it runs really smooth now try cleaning it. good luck.

 

i figured it was the MAF, i'll clean it up and see how she purrs

thanks guys

 

What is a MAF and how do you clean it?

 

Mass Air Flow sensor


rag and i believe WD40 will clean it?

 

denatured alcohol and a LINT FREE rag

haven't heard of using WD-40

 

my buddy used wd40...then again his truck was a ragged piece lol

 

i used CRC cd electronic cleaner bought it at autozone if im not mistaken. give that a try worked good for me.

 

Don't use WD-40... *shakes head*

 

http://www.fordf150.net/howto/clean-...low-sensor.php

 

LoLLLL...Sometimes it takes a picture to make people believe...

Could be a lot of things, but it's best to start with the easiest if you don't own a MODIS, or other expen$ive diagnostic equipment...