mdwst51

I used to think there was something wrong with my car when I was getting 16 mpg and come online and read about mid-upper 20's from other people. My cel light came on one day and I pulled o2 sensor codes and got both front replaced (200 labor, materials). I just filled up today and got 25 mpg!

So if you're suffering low mpg and tried everything else, I'd suggest doing o2's as a type of last resort since it's kind of a higher end (financially) fix.

1996blackmax

iTrader: (2)

I will enentually do this, hopefully before I get a CEL. Right now I average about 18mpg, with mostly city driving. On the highway I get 23-24 mpg. My car has 135k, and it still has the original sensors.

Oblongshapes

iTrader: (1)

hmm at 112,000 and 17 to a gallon, and my anger at that.... i shall try

THT

iTrader: (8)

If you do it yourself (which is very easy), it'll only cost about $60 per sensor. To replace all three, it'd only take about thirty minutes, tops.

~THT

mdwst51

My friend did it for me and we tried the universal sensors (the $60 ones you're talking about I'm assuming). They claim they work for maximas with a little work with cutting the wires to correct length etc. but the plug is a square and our plug is a rounded square so they will not fit. I'd recommend OEM although a little bit more expensive, I like it for the "plug and play" no fusssing with wires, plugs.

lan30122

$60 where at?

Jatan

iTrader: (3)

http://forums.maxima.org/showthread.php?t=289189&page=4

Madmax66

I have a 97SE that just turned 100K. CAI, y pipe, and tornado installed - 25+ round town, 28+ on trips cruising 75-85mph.
Anyone ever tried Fuel Mizer gadget???

suprropmp

what is that?

Defacto

And why with 29,500 miles do i still get 15mpg...I believe i had a rear O2 sensor replaced around 10,000 miles ago as well...

maxima05

How much does the tornado cost?

Brudaddy

iTrader: (2)

YOu have that low of mileage?
Man, I wish!
You should not have had to replace any sensors already.

atpham89

What types of o2 sensor do you prefer? Or all brand are the same?

THT

iTrader: (8)

Bosch makes the ones Nissan puts in from the factory. I've used Walker brand sensors without a problem (they're cheaper)

~THT

atpham89

Oh one more thing. My CEL gave me a 07 07 = Rear Heated O2 sensor. Is that the CAT o2? If so what o2 do i get?

ogparjay

one of you guys put a tornado with your CAI? i heard that would mess up your ride or something... how's that going for your ride? just want to know.

Broaner

iTrader: (10)

Go to www.oxygensensors.com. That site has everything you need and ships very quickly. Don't waste your money on those POS universal sensors. They are only a few bucks cheaper and you would be wondering all the time if your splices have come undone. Everything on that site is direct plug and play. I got a Bosch for the front and a Walker for the rear because they don't make Bosch. On the way to the meet on Sunday I got 35MPG with several short spirited bursts. I was sh!tting myself. I have yet to install the front one but will soon and then order another front. Guys, the tornado is a POS and probably a myth. Read the FAQ Sticky.

atpham89

when you guys are talking about tornados... are you guys talking about the computer fan from vantec? hahahaha

Defacto

yep...and bro, don't even get me started with all the crap I've had to replace on that car. I bought the car with 20,900 miles on it in August 2003. I had to replace the transmission @ around 23,500 miles...i think it was a bad TQ converter...but luckily I was about 1 month out of warranty and the FNND covered me. I had to replace the right rear caliper, rotor and pad, as well as both front rotors and pads 5,000 miles later. I've had to replace a rear O2 sensor, a passenger side airbag (that was just yesterday) and I now need to have my tires replaced after 7,000 miles (i tried to have them rotated @ 5,000 and they said that all 4 tires are cupped) plus a TON of inconsequential crap. I got a low mile car, but the service on this car has been what i'd expect out of a 200,000 mile car...plus the gas mileage still sucks. People that drive 'em like they're stolen still get WAY better mileage than me...

DAVE Sz

iTrader: (2)

Did you buy the car new or used? If used then the car might have 200k on it and no one but the previous owner would know. Since new cars don't have to do emissions for 5 years the dude might have rolled the miles back or got another speedo.

Defacto

It was used...see above, I got it with 20,900 on the ODO. I suspected that maybe it was rolled back, but to the best of my knowledge, a Digital ODO can't be rolled back. I also heard that replacing them didn't do much. Despite this, the wear on the car isn't 200K wear, the leather in the seats were worn exactly how a car with that mileage should've been. The other day, there's this little gap behind the glovebox bin when it's open that I needed to fish around for something in, and while I was there, I fished out a Handicapped tag/sticker from the previous owner. My guess is that it was probably owned by an older person, I found out later that it got into some little fender benders because I found masking tape with spray on it underneath the front bumper. Aside from that, maybe I just got an undocumented lemon (maybe the previous owners got a lemon and just didn't know when enough was enough?) In any event, with gas prices the way they are, I'm being killed here...

white95max

How the hell do you access the front left O2 sensor?
I tried to wedge my 22mm wrench in there but the Y pipe was in the way.
I think it's the front left...Assuming the front is the side where the oil filter is.

atpham89

try using wd40 first on the o2 sensor. then wait awhile. sometimes it comes off really quick or with a little nudge. Well that's what I did when I swapped Y-pipes and it worked for me. Just some insights.

Broaner

iTrader: (10)

Yet another reason to get an aftermarket y. o2's are easy as pie with none of that pre-cat and heat sheilding bs in the way.

NachoNYC

Biggest myth in the auto world

Defacto

just out of curiosity...how would one do that without soldering into some sort of controller board for the ODO?

Would it be possible to actually do something underground like that and involve two cars, one possibly stolen? When I was installing my aluminum dash kit and aluminum kick panels yesterday, I noticed some weird things...i thought I saw studs or rivets w/spot welds or something like that (some sort of little button looking things) that were in the B pillar in a seemingly disorganized fashion that seemed to be a bit rippled. It may have been the light, it may have been me being suspicious...because I don't know what to think with this car anymore...I still love my max, but I've had WAY more problems with this rediculously low mileage car than my friend with a '98 GLE w/104K and counting, who bought it with 80K on the ODO. I just wanted to see if there's any way that one could do some trickery to get a nice looking car a low mileage number to command a high value, when in fact the car was a wrecked POS at some point.

BTW, I know it doesn't mean anything unless an insurance company totals the car or if it's a salvaged theft, but I did have a carfax done on it, I did the little free check thing on it before I got it, then I did a comprehensive one after I got it and things started going wrong. BTW, I bought it from a dealer...with a 90 day bumper to bumper warranty. Things started going wrong before the 90 days were up, which they honored, but they continued to go wrong afterward. Don't get me wrong, despite all that's happened, I love my car, but for the amount of extra $$$ I've had to put into this car, I could've upgraded to something alot nicer...

eckohb

iTrader: (4)

im gettin 20 mpg with a bad front o2 sensor. I was only getting like 16-17 mpg, but when i changed my oil from whatever the previous owner had to mobil 1, im getting 20+ mpg. So i cant wait til i replace that sensor.

Terran

iTrader: (6)

Don't know if you guys are just joking, but THE TORNADO DOES NOTHING.

Defacto

For the sake of mankind, I sincerely hope they were joking...BTW, my car seems to be doing better with summer gas, and all the re-grounding of my audio, and the battery and headlight grounds...but I still have totally crappy mileage...even if i'm not throwing codes, could O2 sensor change help out? If i had that one sensor changed, would it be self-defeating to have the other original O2s...kinda like the ignition coils, where one replaced coil will stress out the other 5 coils and weaken them all...?

DAVE Sz

iTrader: (2)

Digital ODOs are very easy to roll back. I remember they sold the kits on ebay a few years back. You just plugged into some connector on the car and that was it. On the analog odometer it was easy to spot cause rolling those back usually left a scratch or engraved line along all the numbers. Also isn't WD40 a lubricant not a penetrating liquid. Spraying it on rusted bolts won't do you much good.

Defacto

the thing is, the interior looks 30k old...you know what I mean? Could there have been some other stuff that happened...? I'm just looking for some explination, logical or not as to why my car is such a lemon....

DAVE Sz

iTrader: (2)

If you drove the car for 3 years and put on 200k miles and compared it to another car that also has 200k miles but it's 10 years old which do you think will look better on the inside?

Defacto

The one that's 3 years old will still have very large wear in the drivers seats, particularly the bolsters, there would be large amounts of wear in the carpet where one rests their feet by the gas pedals (even if you have mats, the weight and the rubbing does it) Also, there would be wear spots on the steering wheel, the door handles, etc. I know that the 10 year old car would have more acute wear than the 3 year old one, because one would be getting in and out of the 10 year old car more, but still, the 200k 3 year old car would still have serious wear...no?

izzydig

[QUOTE=Defacto]just out of curiosity...how would one do that without soldering into some sort of controller board for the ODO?

Would it be possible to actually do something underground like that and involve two cars, one possibly stolen? When I was installing my aluminum dash kit and aluminum kick panels yesterday, I noticed some weird things...i thought I saw studs or rivets w/spot welds or something like that (some sort of little button

QUOTE]



You mean studs like this? That's the only thing I can think of when you describe those studs/rivets. Body shops use those to pull out pretty good sized dents. You tack on a stud, then pull the stud out. Then grind off the stud when you're done...then bondo, prime, paint, etc.

Defacto

Could've been studs for compensating for wavy panels in a serious accident. IDK. The car had a hit and run 2 weeks ago, and I'm taking it to get that door and all the other little scratches fixed (I bought it with a few on it) Those studs were right by the door in question. When they have it apart, I'm going to ask them if they notice anything suspicious...