rough idle

[timgco]

The tech said when I started the truck up in th bay, the lights were dim and found a bad cell in the battery. We put 200 miles on since the dealer "fixed" this. The ruck has beenon and off a dozen times since also. This rough idle has had few diffferent tanks of gas in it, and also from different stations. The rough idle is when cold or warrmed up. The only thing i haven't tried is a high octane gas. I have been using the cheap stuff. I am under 1/4 tank now, so I will try this next I guess.