I have a 07 5.9 and not every day but maybe once a week it will idle rough for the first start of the morning. I have had the oil changed I'm going to change the fuel filter tomorrow. Any Ideas what it could be.

 

I hate to admit it, but a few of us (local boys) have noticed a rough idle, every once in a while. I have not had it bad enough to consider chasing.

Tony

 

My 07 5.9 has done it as well. Usually after a long pull just as you are getting off the off ramp. Only time it did it in the AM was because my #5 injector failed...

 

it's kinda werd Sometimes if I don't use the truck for a few day it will do it. Then sometimes it will do it when it like 55 out in the morning just to hot to turn the grid heater on. I changed the fuel filter today put a 1qt of 2stroke oil in the tank. Then I filled the fuel filter houseing with power service then put the new filter on and started it. so far so good

 

i also have a 07' 5.9 - 13k and it just started doing this a couple of days ago, very rough idle when in drive and stopped, not park though. it doesnt happen all the time either, today the engine light came on? i think i may be bringing it into the dealer monday and i just checked , no codes?

 

my old 06 did the rough idle deal after a long(20-25 mile) pull up hill empty, and seemed to idle low enough that it almost died. My new 07 seems to also have a similar issue happening with it also. Is there something I need to be looking for????? BTW, no check engine light came on, on either truck.....

 

My 05 does that, but it seems only when I drive around trying to save fuel. If I punch it, I get a big cloud of black which gets less over a couple of times, then it runs smooth. Not sure if it is helping, but it feels good

 

Hate to say it but I am starting to believe it is the nature of these beasts.

 

Mine does it when hot but only with the a/c on.I'm not going to worry about it

 

I changed the fuel filter and ut a good dose of 2 stroke oil and it been starting fine every morning.

 

well it went into the shop , it was a bad injector. 13k miles ! YIKES.... good as new now though, plus they said if i bring back they survey that dodge will send me they will fill my tank with diesel for FREE ! so i will hand deliver that baby

 

Make sure you go back dead empty. It's sad when a dealer thinks they need to bribe you to fill out a survey. I always ask my dealer to send me the survey because they take good care of me as fast as possible.

 

i suddenly stopped getting the surveys in the mail, when things didn't go quite right with the new non-qualified techs doing warranty work on my truck. amazing how that happened, isn't it.

 

I think thats why some of the NON 5 star dealers actually doa better job!

 

i don't know if mine is a 5 star anymore, but cost cutting measures are turning the service dept. into a joke. after having trouble with a basic warranty repair on my truck, the same under qualified, non-ASE tech was given a customer's Viper for some warranty motor work!