thanks al, plugs look identical, temp guage on both are in approximate
same position when at operating temp.
what kind of "scan tool" is this that will measure fuel trim and
ox sensor operation?
about gas mileage, for 2 years the 94 averages 33.3 mpg and the 96
averages 37.7 mpg; long trips are driven at 65 mph max, short highway
trips are driven at 55 mph max.
On Apr 19, 8:05=A0pm, al <abuo...@[EMAIL PROTECTED]
> wrote:
> On Apr 19, 7:44=A0pm, nucleus <rose122...@[EMAIL PROTECTED]
> wrote:
>
>
>
>
>
> > have been driving a 94 and 96 nissan sentra for several years. =A0THE
> > 96 CONSISTENTLY AVERAGES OVER 4 MPG GREATER THAT THE 94.
>
> > both are stock cars, 4 door, 1.6 liter engines, 4 speed/overdrive auto
> > transmissions, have same brand & size tires and use the same tire
> > pressures, which are adjusted monthly. both cars have almost identical
> > total mileage. =A0no dragging brakes.
>
> > the 96 has a different shaped body and is presumably more
> > aerodynamically
> > efficient. =A0however, both autos are driven in the same city &
highway
> > mileage
> > conditions. =A0the 96 gets better mileage in city driving, than does
the=
> > 94.
>
> > is there some sensor, that DOES NOT set a computer code, that can
> > cause
> > the computer to run the 94 engine richer than the 96 engine?
>
> Do the plugs look different between the two cars? =A0If one is really
> runner richer the plugs on that one might show more carbon deposits.
> I presume the thermostat is working well on both and is the same
> design temperature. =A0Beyond that, if you really want to track it down
> you can start by putting a scan tool on it and observing the fuel trim
> and the oxygen sensor behavior. =A0Good luck. =A0Al- Hide quoted text -
>
> - Show quoted text -
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