So I was wondering if anyone could help me out. I don't know if it is a problem yet or not. My truck has had a wierd mis at idle since I purchased it it will idle around 600-700 then it will mis and shake the truck acts like it wants to die but only lasts a second it is pretty similar to when I had my cummins and it would go through the battery voltage on start up. One day it was really bad and I could actually watch the rpm move while it was in park just a couple 100 rpm up and down up and down and then it went away. I took it to ford and they could never figure it out so I did what most would do and just got rid of all the emissions thinking that had something to do with it and unfortunately it is back. Today it was really interesting i was on cruise at about 2000rpm going about 80mph and the truck would act like it would just slightly surge like u just barely tapped the throttle I have read some posts about the surging once EGR is deleted but never when it is in contact. I'm at a loss with it. My mileage is always the same the truck dynoed great an the only mods I have are 250 tune and exhaust. Any ideas? Thanks in advance