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Discussion Starter #1
I have an 07 6.0 that is totally stock. It has 170,000 miles on it. Started it today and it seem to have a rough idle. Continued to idle this way even after warmed up. It also seems to be down on power until above 50 mph or so. Runs down interstate at 70 good but doesn't seem right getting to that point. No check engine light or stored codes at least not that my scanner will see. Im leaning twords a malfunctioning egr valve. Anybody give me some ideas on where else to look? Thanks!! :smile:
 

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EA - Eggfarts Anonymous!
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18,846 Posts
usually an egr valve hanging open will give you a bit more smoke than your used to as well as low power, bucking, etc... especially under throttle, which makes me wonder if you are doing fine on the highway. notice any smoke like unburned fuel smoke?
 

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Discussion Starter #3
I didn't notice any smoke, but it was dark and pouring rain while going down the highway to work. I did notice a diesel smell a couple times, but was thinking it was coming from the semis I was passing.
 
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