On 1/28/08 10:48 PM, in article Neynj.6307$yE1.1742@[EMAIL PROTECTED]
"Mike"
<snorlaxward@[EMAIL PROTECTED]
> wrote:
> E Meyer wrote:
>> Are those Imperial gallons? If U.S., it should be getting 28 mpg on
the
>> highway. How many miles on it? How long since the plugs were changed?
>>
>> Check the temperature sensors (there are two, one for the computer &
one for
>> the temp gauge). If the one feeding the computer has gone bad, the
engine
>> computer will think the engine is always cold & mileage will drop
>> dramatically. Likewise, if the thermostat has gone bad and is not
closing,
>> the engine will never actually warm up. Do you get heat from the
heater
>> after the same amount of driving as in the past?
>>
>>
>> On 1/25/08 1:10 PM, in article
>> f3ffe$479a0955$d0030a88$26419@[EMAIL PROTECTED]
"tonga"
<ttgent@[EMAIL PROTECTED]
>
>> wrote:
>>
>>> 99' Maxima automatic 3000 6cyl.Only getting 18 miles per gallon hwy.
Checked
>>> plugs and air filter.All fine. Should get 23 to 24. Car runs great.
Plenty
>>> of power and torque.
>>> Anybody got any ideas
>>>
>>>
>>
>
> Holy cow!! 28 mpg? That is actual calculated mileage, not estimated?
> My 00 SE gets 18-20 overall, very little better on highway.
> -Mike
I still have a '96 and a '97 with the same engine & auto trans
configuration
as the '99 noted above. The original EPA sticker was 21 city, 28 highway,
23 average on the '96, '97 and '99.
Here's the actual mileage records for the '96, which I bought
significantly
used & beat up. This is over over 47,000 miles (from 80,000 when I got it
to currently at 127,000):
lowest tank: 17.4,
Highest tank: 31.7,
overall average: 23.7.
The '97 is an i30t that I bought new. It will get 30 on the highway if you
set the cruise at 80 (MPH) and drive out the tank, ~28 if you stop a
couple
of times. Actual calculated mileage over the first 80,000 miles (my
daughter started driving it then & doesn't keep detailed enough records
anymore):
Lowest: 16.9
Highest: 30.1
Overall Ave: 23.3
With a decade of experience with these cars, I have observed that tire
pressure makes the biggest difference. They seem to do the best, both gas
mileage and tire longevity, with 33 psi in the front and 31 psi in the
back,
similar to what most were recommending at the time on Maxima.org for the
Maximas of that same generation.
The original EPA sticker on the '00 i30 was 20 city, 28 highway, 23
combination, a little less than the previous body style (heavier?). There
were also changes to the engine in '00.
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