My car seems to be moody. one day it would be a beast and i can feel all the power in the car and the next day, its wont perform as good.

I can feel its not releasing all its power. as if something is holding it back.
in other words, loss of power on acceleration. but its like going from 100% to 80%. i know u guys have said that loss of power is generally a MAF issue but in my case, its not a total loss of power but i can definately feel that the car is holding back and yes this is without the ac on and with just me in the car, so there is no extra load on the car.

does this happen to anyone else.
its a stock 2003 SE and with a K&N filter which i put it in a month ago but this used to happen even before putting in the filter. Previously i thought maybe the filter is bad.

Any ideas

 

Mine does the same thing. Some days it's powerful, other days it's a BEAST. More than likely, just environmental fluctuations.

 

Well its good to know i'm not the only one with a moody max

 

I have the same thing happening to my car too. I think it's the MAF. Until about a month ago my car felt really underpowered, with occasional episodes of normal power, i.e., one time I drive it it's great, then the next ten times its awful. Then one day when I was checking the air filter I wanted to see what MAF I have and unplugged it (don't know why), then plugged it right back in. Then next time I drove the car it felt great - it had all that power back, and it's still OK, but sometimes I do feel like it's struggling...
I think I am just going to get a 2K1 MAF and get this crap over with...

 

well i am glad that i am not the only one.
actually my brother who has a 93 Lexus GS300 and a friend who has a 05 corrolla also has a similar issue.

i just wasnt sure if this was in my head or really happenning.

but i would still want the car to be a beast all the time.

 

It needs a hug.

It could be fluctuations in the ECU since it learns your driving style. Mine does not seem temperamental.

 

I can attest to this. Some days the car feels really punchy and powerful, others it feel like it couldnt be bothered. I wonder what it is? Im thinking atmospheric but who knows. I think this is one of those things that we'll never have a solid answer for.

 

Could be a fuel issue with the new summer mixture

 

I have noticed my cars mood swings while on the same tank of gas.
I think it could be the weather.
guys next time ur cars become a beast, check the outside temp.
I think i recall an outside temp of 80s whenever my car transforms into a beast.

 

yea down here in houston when its 98* like it is right now, my car turns into a lil sluggish biotch

 

Mine does the same thing too. Alot of it I think has to do with the weather, if it's hot or humid outside and sometimes it has to do with the fuel when certain states add the summer mixture.

 

Mine does this a lot too. Almost everyday it acts different from the past five days. Sometimes I think it's my MAF and other times I feel like it's my coils. Also, my car sounds great one day and the other, it will have a metal sound underneath my car (flex section bees sound).

 

Air conditions on any given day or even throughout the same day as it gets hotter or colder alters horsepower of a car dramatically. Check out this relative horsepower calculator: http://www.csgnetwork.com/relhumhpcalc.html
This site shows that: "On a hot day, or at high altitude, or on a moist day, the air is less dense. A reduction in air density reduces the amount of oxygen available for combustion and therefore reduces the engine horsepower and torque."
Also from the same site:
"For example, at 85 degrees F, 30.14 Inches Hg (mercury) barometer reading, 40% relative humidity and 5000 feet altitude, the engine only produces about 81.1% of the rated horsepower."
Play around with the calculator to see the difference in your area. You can go to weather.com to find the current weather for you area.
It's really bad where I live, where the day starts out in low 70s, and ends up at 90-100 degrees (Austin TX.)
I hope that helps explain the weather aspect a little bit.

 

I concur. Peorth(my max) needs some pampering every once in awhile or she gets lethargic

 

How can you put a 2001 maf on a 2002??Is this possible???I just switched my maf because it died last saturday.Got the limp mode and a check engine light.Dealer called said it was the maf.885 canadian $ to get it replaced and reseted the ecu.

 

My maxima is moody too.Been like that since I got it a year ago.Some days I couldnt put traction on the ground(dry) and some others It just wasnt powerfull enough to burn tires(still on dry).

It felt like you said..like it was holding back..and other days it just felt like it was gonna tear everything apart.

 

http://forums.maxima.org/showthread.php?t=348395

 

Thnx a lot.

My apologies for being a noob.

 

One of the best posts ever. We are all noobies



















Once

 

Well for some pple,noobies seem to be a plague...a kind of devil that needs to be bashed as much as possible.I know it can get on the nerves of older member but like you said we all need to start somewhere.

As for the car I am so pissed towards nissan because I took the motor and tranny extended waranty wich cover these parts for 3 more years a 60 000km.Dealer told me yeah np 99% chance your maf is covered by the waranty.Called me back saying Nissan canada didnt wanted to pay it since its not covered.Im gonna send a letter to Nissan telling them they are simply liars with their waranty.

 

$885?!?! **** thats a lotta money for an MAF granted its an 02-03 and canadian dollars but still

 

Part alone was 600$ plus taxes wich are 6.5% PLUS 7% on top of the other taxe...Thats how it is in Canada province of Quebec,Montreal.Add a couple of hours to reset the ecu and put back the new maf.Oh I forgot to mention they checked the codes so it adds up even more.

 

You should have bought the 2001 MAF and transferred the thermistor. There is a how to here somewhere. Live and learn. Next time

 

one time i had so much power, i was scared and took the car to nissan to find out was anything wrong, they tested it, no codes. that happen for about two weeks straight, but now it seems pretty normal. It loves to be drivin in the rain and snow, what can i say i have a wild max

 

happens to my car too...and my other car as well...i notice when it's cold in the morning the car will feel pretty strong but i would get a lot of interior rattling/creaking noises...but then when it's warmer the car will have lesser rattle/creaks o_O hot days the car will run smooth but doesn't feel as much power as usual like in cold morning where the power is awsome lol it's weird but like others have said it's problly due to the weather. even my suspension feels softer when the weather is warm haha

 

i noticed it it mine also, (2000 I30), previoulsy i owned a 96 Max, and it had a lot more power, roughly same mileage ect. the I30 just seems held back. I am also having tranny issues

 

i sort of get moody when my car feels like its running slow. it's not a good feeling.

 

see what ur experiencing is this TX heat we have goin on haha we've got the same filter and car so yea its nothing wrong with it at all. do you participate also in the stop and go rush hour traffic? my K&N is dirty as crap, so its not ur filter, because mine still punches like it did when i bought it. though you will have those slugish days. its normal, jus try not to abuse in the heat. funny as it may sound, me and a friend just finished talkin about that. what kinda gas do you use? I use chevron super and it helps out alot as for performance wise of ur car. you should try it, and thats proof from 2 other guys i know out here. i just asked what they say the same results as i got

 

Same problem here. Sometimes my car run like brand new from the factory, sometimes not... Maybe my IAT sensor is going to die or so...

 

I think its your MAF.

My car did this, then i started to notice it realy bog in the 3-4 k range, and the response was terrible.

Got a 2k1 maf from my stealer ship, thing runs like a beast now.

 

Moody max?? Its all in your head. Tell me your car doesent feel faster when you just washed & waxed it. Or when you just got laid. Take zoloft on the regular & your car feels like a beast everyday. Why is that you ask? Because everything in your brain is right on when your on zoloft.

 

I always put Shell V power and yes i take 635 to work so its always slow. I know shell gas has 10% ethanol. thats supposedly is good for the engine but i think it cuts down on milage and performance but keeps the engine healthy.

i will try chevron super this time.

 

yea thats the last gas i used b4 i switched to chevron and it changed up alot. ohh denng 635 is a beast lol i take 30 goin to work and home. sometimes i take 75 home. but anyway, yea next empty tank try chevron super and watch the diff

 

my car performs at 100% every time i want it to.

it is all in your head. it really depends on the mood you are in.

i guess you are the moody one.

 

+1 .

 

i think smoethings wrong with my max it pulls hard till about 4500 rpms then it just like revs if i keep pushing till redline like the power isnt there but the engine goes there? would that be the maf?
<<<<<<<< nub

 

All non flex/e85 gasoline has 10% ethanol as required by the government, because they stopped using MBTE.

 

I just tried this about 5 minutes ago and put in all of the conditions that were present a half hour ago when I got home. I live in Orland Park, IL and the elevation is only 686 Ft. I just got back from driving my 2003 and it felt like it was only making about 80% of its normal power output. According to this calculator, I should be producing 99.9% of its power. It definatley was not performing as well as it normally does so something has to be wrong. I triple checked all of the data to make sure that everything was correct. I am not sure about how accurate this calculator is, but it is possible that something else was affecting it. BTW, you can find your elevation and everything else by going to this website:

http://www.wunderground.com/

 

not at all, when mine feels like this I sometimes just wanna sell the d*mn thing or beat the sh*t outta it

 

mine does the same thing, i notice it whenever i fill up gas from different gas stations. Some blends of Gas are different.