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fuel mileage sucks

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Old 02-19-2007, 12:25 AM
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fuel mileage sucks

kinda wierd that everybodys getting better mileage than me, whats wrong? 14.5 on the highway maybe a little off from larger tires? but i thought that would help on the highway. i used to get aroung 18 but seems mileage keeps going downhill. i drive 70 to 75mph.
Old 02-19-2007, 01:34 AM
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Did you get your speedo recalibrated for the tires? If not, your mileage will appear to have gone down. I bet your tranny issues would also play a role in bad mileage.
Old 02-19-2007, 02:05 AM
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how do you recalibrate the speedo
Old 02-19-2007, 04:34 AM
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A smarty I think can do it, your juice might be able someone else might know with that. You can also go to your local dodge dealer and they can do it. Transmission might have something to do with it, but larger tires are hard to turn.
Old 02-19-2007, 05:21 AM
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Hey I got a 96 4x4 auto trans just rebuilt with 5" turbo back cold air intake big tires 305-70-16 i get about 14 mpg
Old 02-19-2007, 07:57 PM
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Mines dropping too. Taking it in tomorrow to pull codes and check out my tranny. It could be your auto going out or an injection pump. Hopefully it isn't one of those components, but it seems like the weak link on these trucks.
Old 02-19-2007, 08:01 PM
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you can recalibrate it with a Snap-on Scan tool
Old 02-19-2007, 08:07 PM
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don't forget winter fuel=lower fuel mileage
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