First truck ... the truck computer says I'm getting 8.4 mpg?

0server0.RemoveThis@comcast.net wrote:
> 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?

On my 2001 QC 1500 with 360 and 3.55 rear I averaged 14 city, 16 highway.
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

On Wed, 12 Mar 2008 17:06:58 -0700, 0server0 wrote:

> 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.

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.

--
Chris
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

"Miles" <nope RemoveThis @nopers.com> wrote in message
news:tK0Cj.5820$GW5.1337@newsfe12.phx...
> 0server0 RemoveThis @comcast.net wrote:
>> 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?
>
> On my 2001 QC 1500 with 360 and 3.55 rear I averaged 14 city, 16 highway.


The 4.10 rear end drops the MPG significantly at higher speeds. On my truck
it went from 3.55 to 3.73 and it dropped by 5 MPG at 70 MPH.
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

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
mixed highway/city.

<0server0.TakeThisOut@comcast.net> wrote in message
news:72455827-9db7-4be8-973b-4b7145cfbf68@e25g2000prg.googlegroups.com...
> 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.
>
>
>
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

On Mar 12, 8:06 pm, 0serv....DeleteThis@comcast.net wrote:
>
> 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.
>

'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
filter.

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.
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

On Wed, 12 Mar 2008 17:06:58 -0700 (PDT), 0server0.DeleteThis@comcast.net wrote:

>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.
>
>
>
Take a cruise down the interstate and check your odometer against the mile
markers.

beekeep
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

Thanksfor you input everyone, seems the seals just dired up, the freon
is holding after several weeks so if it is a leak, it's a small one. i
try to cycle the AC for a while each time I drive now to kep the seals
lubbed.
Thanks

On Mar 12, 8:06 pm, 0serv....DeleteThis@comcast.net wrote:
> 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.
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

I got 16-17 mpg with my '96 360. It had a 5 speed and a 3.55 axle.
Steve

"ballyg" <ssbswv RemoveThis @gmail.com> wrote in message
news:d8fff058-14c5-4aee-9175-506a89dd6edc@l64g2000hse.googlegroups.com...

Thanksfor you input everyone, seems the seals just dired up, the freon
is holding after several weeks so if it is a leak, it's a small one. i
try to cycle the AC for a while each time I drive now to kep the seals
lubbed.
Thanks

On Mar 12, 8:06 pm, 0serv... RemoveThis @comcast.net wrote:
> 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.
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

How did you get a 360 and a 5 speed?

--
If at first you don't succeed, you're not cut out for skydiving

"Steve Lusardi" <stevenospam DeleteThis @lusardi.de> wrote in message
news:fvkm21$oum$03$1@news.t-online.com...
>I got 16-17 mpg with my '96 360. It had a 5 speed and a 3.55 axle.
> Steve
>
> "ballyg" <ssbswv DeleteThis @gmail.com> wrote in message
> news:d8fff058-14c5-4aee-9175-506a89dd6edc@l64g2000hse.googlegroups.com...
>
> Thanksfor you input everyone, seems the seals just dired up, the freon
> is holding after several weeks so if it is a leak, it's a small one. i
> try to cycle the AC for a while each time I drive now to kep the seals
> lubbed.
> Thanks
>
> On Mar 12, 8:06 pm, 0serv... DeleteThis @comcast.net wrote:
>> 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.
>
>
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

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.
Steve

"TBone" <NoWay RemoveThis @nothere.com> wrote in message
news:481de636$0$5705$4c368faf@roadrunner.com...
> How did you get a 360 and a 5 speed?
>
> --
> If at first you don't succeed, you're not cut out for skydiving
>
> "Steve Lusardi" <stevenospam RemoveThis @lusardi.de> wrote in message
> news:fvkm21$oum$03$1@news.t-online.com...
>>I got 16-17 mpg with my '96 360. It had a 5 speed and a 3.55 axle.
>> Steve
>>
>> "ballyg" <ssbswv RemoveThis @gmail.com> wrote in message
>> news:d8fff058-14c5-4aee-9175-506a89dd6edc@l64g2000hse.googlegroups.com...
>>
>> Thanksfor you input everyone, seems the seals just dired up, the freon
>> is holding after several weeks so if it is a leak, it's a small one. i
>> try to cycle the AC for a while each time I drive now to kep the seals
>> lubbed.
>> Thanks
>>
>> On Mar 12, 8:06 pm, 0serv... RemoveThis @comcast.net wrote:
>>> 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.
>>
>>
>
>
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

How well is that transmission holding up to the new engine?

--
If at first you don't succeed, you're not cut out for skydiving

"Steve Lusardi" <stevenospam.RemoveThis@lusardi.de> wrote in message
news:fvkr8k$pmg$02$1@news.t-online.com...
> 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.
> Steve
>
> "TBone" <NoWay.RemoveThis@nothere.com> wrote in message
> news:481de636$0$5705$4c368faf@roadrunner.com...
>> How did you get a 360 and a 5 speed?
>>
>> --
>> If at first you don't succeed, you're not cut out for skydiving
>>
>> "Steve Lusardi" <stevenospam.RemoveThis@lusardi.de> wrote in message
>> news:fvkm21$oum$03$1@news.t-online.com...
>>>I got 16-17 mpg with my '96 360. It had a 5 speed and a 3.55 axle.
>>> Steve
>>>
>>> "ballyg" <ssbswv.RemoveThis@gmail.com> wrote in message
>>> news:d8fff058-14c5-4aee-9175-506a89dd6edc@l64g2000hse.googlegroups.com...
>>>
>>> Thanksfor you input everyone, seems the seals just dired up, the freon
>>> is holding after several weeks so if it is a leak, it's a small one. i
>>> try to cycle the AC for a while each time I drive now to kep the seals
>>> lubbed.
>>> Thanks
>>>
>>> On Mar 12, 8:06 pm, 0serv....RemoveThis@comcast.net wrote:
>>>> 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.
>>>
>>>
>>
>>
>
>
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg? 

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.
Steve

"TBone" <NoWay.RemoveThis@nothere.com> wrote in message
news:481e5cfb$0$20169$4c368faf@roadrunner.com...
> How well is that transmission holding up to the new engine?
>
> --
> If at first you don't succeed, you're not cut out for skydiving
>
> "Steve Lusardi" <stevenospam.RemoveThis@lusardi.de> wrote in message
> news:fvkr8k$pmg$02$1@news.t-online.com...
>> 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.
>> Steve
>>
>> "TBone" <NoWay.RemoveThis@nothere.com> wrote in message
>> news:481de636$0$5705$4c368faf@roadrunner.com...
>>> How did you get a 360 and a 5 speed?
>>>
>>> --
>>> If at first you don't succeed, you're not cut out for skydiving
>>>
>>> "Steve Lusardi" <stevenospam.RemoveThis@lusardi.de> wrote in message
>>> news:fvkm21$oum$03$1@news.t-online.com...
>>>>I got 16-17 mpg with my '96 360. It had a 5 speed and a 3.55 axle.
>>>> Steve
>>>>
>>>> "ballyg" <ssbswv.RemoveThis@gmail.com> wrote in message
>>>> news:d8fff058-14c5-4aee-9175-506a89dd6edc@l64g2000hse.googlegroups.com...
>>>>
>>>> Thanksfor you input everyone, seems the seals just dired up, the freon
>>>> is holding after several weeks so if it is a leak, it's a small one. i
>>>> try to cycle the AC for a while each time I drive now to kep the seals
>>>> lubbed.
>>>> Thanks
>>>>
>>>> On Mar 12, 8:06 pm, 0serv....RemoveThis@comcast.net wrote:
>>>>> 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.
>>>>
>>>>
>>>
>>>
>>
>>
>
>
 >> Stay informed about: First truck ... the truck computer says I'm getting 8.4 mpg?