Mileage and truck computer not overhead

Mileage and truck computer not overhead

05-02-2005, 01:21 PM

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Trophy1

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Join Date: Oct 2003 Posts: 46

Mileage and truck computer not overhead

Took my 03 HO to the dealers as the mileage went from 19mpg to 13.3 running the same trip 5 months apart under the same conditions. Dealer said it was because of winter mixed fuel up north when I filled up. He also said that the computer in the truck told him how long the truck idled since new as well how many gallons of fuel burned and a bunch of qther stuff like how much the engine was under a tow load. My question what and where is this record kept. Will this also show a box? Truck showed no codes when I got this info.
Can the flash be corrupt to cause such a drop in mileage from 19 to 13.3 on a 5 and half hour trip at 68 mph, 1850 RPM. Any help with this would be appreciated

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