I have a 00 SE Auto; Now I understand Maxima's aren't exactly the best gas friendly cars out there but I have to pump gas within four days and I don't even travel that far ether. I don't have a heavy foot ether. But I was wondering could my ABS light being on have anything to do with how bad I am doing on gas? I feel like i am getting 15 mpg

 

do an actual calculation of your MPG or tell us how much you get to a tank and we'll get back with you...generally sepaking i get about 330 miles to a tank with a quarter tank of gas still showing...24mpg

 

Well I did the calculations like you guys told me. Yeah I did it five times. I ran 210 miles and am getting 12.3 MPG. I only drive around the city and mostly to school an back, I did this easy on the pedal. I understand we don't have gas savers but this is outrageous. somebody help me out what could be wrong what do i need to change or check.

 

Drove from the east side of the DFW metroplex back to Arlington, about 36 miles, trip computer showed 32.0 mpg, about a 3 mpg improvement from the last time I did that. The difference?

Replaced 6 plugs just like this one...

 

so do you think if i change the spark plugs i will move up from 12 mpg -_- because I am considering selling my maxima if this doesn't rise a little bit more. someone told me to change ignition wires too

 

^^^--- No plug wires! Last ignition wires on a Maxima were on a '94 GXE (VG engine).

Recent trip to GA from TN, got 24.4 mpg...95% or better was all interstate. Daily driving, city, interstate, and mostly highway...I get 19-21 depending on how aggressive my driving is.

 

i now get (after pcv valve, plugs, one coilpack replacement *not including replacing air filter*) 24/25mpg mixed/city miles and 27mpg highway ....at least 400 miles/tank now..where i use to average about 370miles/tank

 

Well bringing it too Nissan too fix this. I've been wasting so much money at 12 mpg. Hopefully I come out at 20 . 450? Pure jealous I ran half..

 

I have Bosch Platinum Plugs and I guess ill buy some pcv valves that you mention it. thanks for the advice. ill get back with improvements after i fill up an run the car again

 

i used NGK base plugs...yea the 1.99 ones...seems like i got better MPG w/ those than the ones i spent bank on...imagine that. you dont have a code for a bad coilpack do you?

 

Hey, you lucky I read your post
I am having similar problems on Infiniti i35 except that I get 15-16mpg.
I did a lot of stuff to figure out the problem. Changed a lot of stuff.
But it seems that the problem is in my spark plugs. I had the same sparkplugs you have, the bosch platinum. REMOVE THEM AND REPLACE WITH OEM SPARKPLUGS. I replaced first 3 with OEM once again and I think my mileage is getting better. I read before that bosch sparkplugs are not very compatible with our cars.

 

First off noone get off topic don't post your gas mileage its okay i just want someone to help me solve my problems here are pictures of the problem. they guys at nissan said if i get a new airbox it will fix my gas mileage because its disconnected an broke its causing the maf to malfunction an its telling the it to give the car more gas then it needs an telling the engine that its too hot or cold. question is are they right? second question is, is it better to get an intake or just another airbox. im not locking to spend too much money here i just want my gas mileage back to usual an not at 12mpg..ONTO THE PICS

 

nissan is full of ****, period. my oem intake stops where the airbox (holder for the air filter is) and i'm getting the mileage that i stated above. i didnt feel like reinstalling all that other parts of it because i was lazy...at the end of the day. thats not your problem

 

Change the spark plugs, check for codes, my low city MPG is due to my O2 sensors being unplugged, and do some general maintenance. Your airbox idea is digging a little deep. Before meriting that theory, do the above maintenance items first.

My city MPG is 17, and my highway is 28.

 

Spark plugs are a B too put in. Can always rely on my fellow maxima owners. thank you sir, will do.

 

plugs arent that bad to install, seriously. even though its more of a 'feel your way through on the back, but its still not too bad. getting the coilpacks angeled to get out is the worse part of it. do your plugs and w/e else as mentioned. the air box IS NOT your issue. you can pull everything out up to where the filter is held and be perfectly fine, as thats how i have mine set up

@NmexMax i dont know, but i didnt see a reason for it to be deleted. oh well.

 

IMO, anyone with a small set of sockets and an hour of time can do a spark plug job on an 00-01.

phatboi's post is back, even though it really doesn't make much sense ... unless you meant another post.


Anyhow,:
http://www.cardomain.com/ride/207643...-maxima/page-5

 

Thanks for the link on the how-to. My 01 has 97k on it and I've been thinking about doing the spark plugs here soon. I just haven't decided whether or not to shell out the extra dough for the new ignition coils. I'm not having trouble with them; is it worth it? Or just wait until one/multiple coils go bad?

Sorry to thread jack

 

kinda have the same problem as op with mpg (will test manually this weekend)

i also think i have a bad ignition coil

every time i start up first time of the day i get a loud squeegee sound (only during startup) after that the sound reduces each additional start up of that day

also how much are ignition coils btw from dave b

 

ouch...
this whole time i thought the 5th gens get 300 miles to a tank tops...

everytime i fill up, my DTE says 298-304

i honestly dont have the lightest foot but seeing that everytime i fill up with fuel kinda depresses me...

i have
new plugs
new coils
new filter

what else

03 GLE btw

 

Could the problem be that you are driving a 3,200lb car with an engine displacing 3,500cc? Consider that a Honda Civic has (I think) a 2,000 cc engine and weighs about 2,700lbs. A civic (non-hybrid) prob gets about 30 hwy and 25 city.

My car gets 17mpg in mostly city driving. That's better than 12 but in the same neighborhood. These cars just don't get good city mileage, weren't designed to. The highway numbers are pretty good, but I do very little highway with it.

It does suck at the pump, but then again I only paid $8,500 for the car to begin with. A newer civic would cost a lot more to purchase initially so gas savings would be a moot point....

Finally, a Maxima is soooo much more satisfying to drive than a four-banger...

 

I agree, I had 8-9k to blow on a car and I picked my 2000 Maxima. I love maxima after my 1995 GXE, So I bought my GXE for 4000.

I could of got a Civic but i love the power of maxima's v6

I've recently changed my spark plugs they raised up my mpg by a bit from 13->16 I had bad spark plugs like Scott, but there;s some other stuff i want to check out. I'm tempted to go to the dealership.

EDIT:
Ive also added seafoam to the tank as well.

 

You are going to hate this then. Yes, it does day 500 dte

 

My wife's 02 civic has the 1.7L engine. She averages 30 city and we've gotten 40 hwy before. Usually average 37+ though. I usually average around 23-24 mixed driving in my maxima. I've never gotten above 28-29 on pure highway.

 

LOL @ Scott

@Beefster...replace one bad coil at a time...its more than likely going to be one of your rear coils that are going to need replacing. wait until the SES light comes on for whatever cylinder misfire...and replace it

 

 

OP that is definetly bad gas mileage. i drive a total of 205 miles per week (41.xx miles per day) and i only put in $35 dollars a week which gets me just a hair above 1/2 a tank.
on a side note, 85% of that driving is on the highway though...

 

getting roughly 370-380 miles per tank. Averaging 24-26mpg. 01 manual SE

 

Well guys i know my 2000 is giving really bad gas milage...i was checking my gas receipt, 16gl....178mls, all local driving. I only drive on weekends.., so since the weather is getting better...now tell me what what i should change or clean..
thx

 

read the thread

 

...pull codes to see if you're throwing a bad knock sensor code, clean MAF, change spark plugs, clean the TB, change tranny fluid, replace fuel filter (better known as fuel strainer) , fresh oil change, you should notice a difference in MPG (i know i did)

 

Im getting sh1tty a$$ gas mileage like 200 or 210 on a full tank like 14 to 15 miles per gallon, but bouts to switch all coil packs, spark plugs, and do my rear valve cover since that's leaking and probably will do the fuel filter another weekend or so....

 

Thx bro..thats what i was looking for ..direct answers..

 

Out of curiosity, why are your o2 sensors disconnected and why does that affect city driving but not highway?

My MPG has been bad recently too, more so than usual. I finally got my wideband installed so I'm taking fuel out now at low throttle, seems to be helping a little. I have codes for o2's but one is the heater in the o2 and one is high voltage, I believe. I think that's cause of the headers.

But I've never changed the PCV valve or any of the coils, the coils should be fine if the car isn't misfiring, right? The plugs were changed like 20k miles ago, I did one step colder plug because I intended to spray and never did. Maybe it's time for new plugs?

 

Revs and load is a bit higher at highway speeds so it rverts back to closed loop and the secondaries take over. Honestly, I need to get it fixed, but it's because I don't have extra bungs on my header set-up.

BUT, there are a couple of us on here that do not throw codes for our secondaries even though there aren't any cats in place. So, another dude has his secondaries dangling in the engine bay and his primaries plugged where their supposed to be w/o any codes.

As per the FSM, if the primaries are not detected, the secondaries will take over ONLY at the closed loop/open loop switchover, so my car is clumsy at like 1500 RPM or so when it's trying to find the primaries.

 

so i tested my mpg manually

i filled up took about 16.01 gallons (tank was on E there was probably 2 gallons and change left) and i drove 51 miles and filled up again it took 2.4 gallons

so is it safe to assume im got 21.25 mpg (mix of highway and local)