Join Date: Jun 2014
Location: Roanoke VA
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Dissapointed in my 99 Power Stroke :-(
So two months ago I bought my low mileage (85k) '99(build date 4/99) supercab XLT. I have some issues all addressed now but even with all the money I have spent on it my mileage is terrible. I'm getting 10mpg at best in town. I have friends with 99' PS that are getting much better.
I went from a 2009 Jeep Commander with a Hemi and was getting 11.5 in town, 11 towing 7k at 70+ mph(with reserve power I might add) and easily got 17+ on the highway empty.
I thought and was told a diesel could do all that the Hemi could do and more and I'm disappointed to say the least.
I'm a mechanic, I have my degree from Nashville Auto Diesel College, I work on Diesel Electric locomotives and I understand engines and how to make them efficient. This truck responds in a negative way to everything I try to do to make it more efficient.
Is 10mpg in town and driving it like and old grandma normal? If so its time for another gasser. This truck is in perfect condition right now. I have had other hands and eyes on it and have gone over it, replaced everything that needed replacing. I don't understand why my Power Stroke just does not run right and efficient. Can someone give me something to look for?
To date I have;
Replaced the IPC, repaired all boost leaks, replaced the fuel filter, checked the up-pipes. Everything is good. No codes either. Its all stock, stock tires, no lift etc.