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6.4 Check Engine Light

Blue Goose

Blue Goose

16,116
781
Fenton, Missouri
My nephews company has three '08 6.4's that the check engine lights have come on just this week during the cold weather. They blow big clouds of smoke going down the highway and fuel economy has gone into the crapper. Any ideas?
 
blacksnapon

blacksnapon

Moderator
Staff member
9,461
301
waynesville,mo.
The dpfe sensor on the diesel particulate filter can be faulty as well. And, if the incorrect fuel is used, premature filter failure can result, again, causing constant regen.
 

Bob Ayers

North Carolina Chapter member
1,474
111
Durham, NC
If all three have been fueled from the same source, I would suspect bad fuel.
 
Gunner

Gunner

Charter Member
1,480
57
Billings
blacksnapon said:
The dpfe sensor on the diesel particulate filter can be faulty as well. And, if the incorrect fuel is used, premature filter failure can result, again, causing constant regen.
Click to expand...

Incorrect fuel? Like dyed diesel, or bio diesel? What do you mean by incorrect?

Gunner
 
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