Originally Posted by matthewavogt
The brakes seem to be ok. And because i am anal i just drove to the nearest autozone which is about 20 miles away and had them test my alternator and battery. Both tested fine. I am wondering if the DPFE could be causeing the EGR based problems. If the dpfe is bad i wonder if that could be causing be bad ideling because the air to fuel ratio is of and if that could be causeing my fuel economy issue assuming there is one
i also would like to add that I do the seafoam treatment about once every 4 months.
Ease down on the seafoam. You don't need to do it that often.
Check the EGR. If that tube is rusty, it could have a hole in it.