maxima2k2

will leaving the switch on power or comfort for a long period of time do anything bad to the transmission? for the power switch, how does it feel?

Irish

iTrader: (3)

power is ok if u want to race. all the switch does is change the rpm at when the trans. shifts.and i dont think that leaving it in either position will do anything to the trany

AscendantMax

iTrader: (7)

doesn't matter. it automaticallys go into "power" mode when you go WOT. but yeah like irishmax said, it just changed the rpm in which the tranny shifts into another gear.

maximum_mxma89

i keep mine in power mode. good performance gains, but crappy gas mileage. not that i get good gas mileage in any mode. =(

DARHAW-MAX

DARHAW-MAX

If you are getting crappy mileage, then you may need to investigate. With my auto GXE, I easily get 23 to 26 MPG city. Highway, I can get over 28 MPG with cruise and little hills. This is regardless of the power mode setting.

As for the manual SE, again, I get about the same. As a matter of fact, in the city, I get better mileage since I control the revs and gears.

maximum_mxma89

what should i investigate? i seriously doubt if i am getting 15 miles to the gallon. everytime i go somewhere i see the gas guage slowly move down. any ideas?

AscendantMax

iTrader: (7)

technically it DOES go down slowly

how's your driving habit?

maximum_mxma89

haha. i do have a heavy foot sometimes, but even when i drive good, it still gets crappy gas mileage. sux 4 me.

AscendantMax

iTrader: (7)

do a full tune up and go easy on the gas. you should see some improvement.

abunai

I've noticed this on a few nissans I've worked on. It maybe worth checking out.
On the gas tank there are a bunch of rubber hoses. With age they crack and leak. Although they are on the top I've had to repair some of them, and the mileage did get much better.

maximum_mxma89

thanks a lot. ill look into that.

Dielaughing

easy on the gas and set the tranny mode switch to "c", you should see an immediate improvement. putting the rocker switch in the middle just makes it bounce back and worth between "p" & "c" depending on pedal position.
item of note: when i leave it in the middle i get some wierd shift patterns when floating @40-50 mph, as if it doesn't know which mode to use...
leave her in "p" and she just flies beautifully.

maximum_mxma89

even when i have it on "c" i still am getting crappy mileage. im going to look into replacing the tubing from the gas tank and ill let you guys know if that helps. thanx.

HerrMaxima

The same thing was happening to me. I just put in a cold air kit, and i need to go through a couple of more tanks of gas, but so far it has helped dramatically. This is also while im testing out the cai and driving like an animal. I put in the kit for power, but it seems its paying off in other ways.

maximum_mxma89

what kind of CAI did you put in. I was just going to order one from warpspeed because theirs is only $150. do you know of one that is cheaper/better?

Bryan H

i have the same thing in my 95 pathfinder
i leave it in auto for gas mileage reasons
you can go WOT and not have it go into power mode.
its all in how fast you move your foot.
you can slap the gas pedal and have it coe on and not even have the car downshift

it doesn't have any adverse affects on life of the tranny

DARHAW-MAX

maximum_mxma89---

I hate to ask this, but when was the last time you had a full tune up. Even if the hoses are rotted out by the gas tank, the leaking should only be a factor when the tank is full. Other things that can affect gas mileage are, but not limited to:

- Air filter: make sure it is clean
- Spark plugs and ignition system
- clogged or faulty fuel injectors
- vacumn leaks

I am sure the the other .org members can list a number of other things also.

maximum_mxma89

im sure it hasnt been more than a year since it has had a tune up. the man who had it before me was a mechanic and kept the car in top shape. ive been searching the forums and everything seems to lead to a bad o2 sensor. maybe ill replace that, and use some fuel injector cleaner to see what happens. thanks.