Just purchased a 2000 dodge 2500 with a 360 v8, 265x75x16 tires, quad
cab, 8' bed, I was thinking about the diesel but since it would be
used just one in a while, I went the gas engine route.
I expected around 16mpg highway with the 4.10 rear doing about 55,
but the truck's computer is saying I'm getting 8.4 mpg with an
unloaded bed? I went out on the highway and cruised about 55 for 10
miles and still reading a tenth better at 8.5 mpg. When I fill up I
will hand calculate... but how accurate is it to read the mileage from
the on board computer?
Is there any sensor or other issue that could justify such a bad gas
mileage if I find out that it really is that bad?
Thanks in advance.
On Wed, 12 Mar 2008 17:06:58 -0700, 0server0 wrote:
May be a little low but I think the 14 is even a stretch for that
combination. I would expect 11~12 real world. My old v10 actually
averaged the same as what my friends with the 5.2 and 5.9 was claiming
around town. I got 10 mpg 12 on a good day when i talked real sweet to
it. Most my friends around here were claiming 11 to 13 and I think most
of them were running 3.73 or 3.55 gears not the 4.10 you have.
My computer is consistently off by +10% (that is it shows I'm getting about
10% better than my actual mileage). The same goes for the Distance To Empty
(DTE). FWIW, my '99 Ram, quadcab, 4x4, 360, 3.55 gears gets about 13-14
On Mar 12, 8:06 pm, firstname.lastname@example.org wrote:
'02 Dakota 5.9L: 12 MPG. Sold it!
8.5 is very bad, but I'm not surprised. Depending on the miles, it
could be time for plugs, wires, cap, rotor, O2 sensor. Check the air
Also watch the oil consumption. 2 out of the 3 Dodge 360's I've been
acquainted with would use up all the engine oil between changes.
Broke the crank at first main on my 5.2. Droped in a 5.9 from a 2001. Wacked
off a chunk of the flywheel opposite the bob weight on the original
flexplate with my end mill. The 5.9 is externally balanced and the 5.2 is
internally balanced. Used the 5.2 standard ECM and used the original
injectors from the 5.9 by modifying the wiring harness. Worked perfectly and
increased fuel economy by almost 2 mpg. As a side benefit, the truck really
woke up. Goes like hell.
Absolutely no problem. The truck drives better because the engine produces
40 ft lbs more torque right off idle speeds over the 5.2. So, less throttle
is used to get the truck to move and maneuver in traffic. That's where the
mileage increase has come from. The difference in drivability is really
phenomenal. Dodge really missed the mark when they only offered the
combination in the 2500 & 3500. There has been more than 50K miles since
this conversion was done.
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