Just a guess but it sounds like the truck is never warming up enough. The comp
is never getting out of closed loop mode.
Doug Fedeli
"William H. Hiatt III" wrote:
> Well, I got a 2k 4.7l w/ auto, and am only getting about 9.5MPG. I will
> admit, the computer, when I had to drive to have it relearn, I did drive
> very heavy footed, and I do drive lead footed sometimes. Most of my driving
> is just short trips, 5-6 miles. What's up here. I am a little lead footed,
> but that much. It has been around 50 degrees here lately too. Any ideas?
> Should I run fuel injector cleaner, or fuel system cleaner? What's the
> difference? I usually prefer the STP stuff.
>
> william
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