2003 6.0 liter idling very rough

[mikekellam]

I have a 2003 6.0 that has a pile of miles. 240,000 to be exact. It runs excellent but when it is parked and idling it spits and sputters and almost dies but when driving runs great. Someone told me to run injector cleaner through my fuel but that didn't work. Just wondering for some ideas.

Thanks

 

[cwilson]

try cleaning the throttle body and the idle air control valve.

 

[bigduly]

I'm having the same problems. Use sea foam to clean injectors and pour some into your brake booster line.