So I decided to change the air filter with a K&N one because of their good reviews. after i changed it, the tranny feels weird. when i'm on the highway, i'll step on it half way and it'll move and rev up to about 4k rpm then stays there(slowly creeping to 5k and slowly gaining speed), like its stuck for a second or two and slowly moving up, as if its asking me to gas it some more. but if i floor it/gas it more, it'll rev up to 5k-6k like a slip. this hasnt happened before until i changed the air filter. can this be the MAF problem? any input is appreciated.
I shouldn't have changed the air filter...

I also added a pole, interested in seeing what other fellow orgers use. Thanks!

 

maf failure... are you running GAB or Stock? a sloppy gab will make your MAF fail too.

 

im running stock. just replaced the stock filter with an K&N filter.

if its the MAF, can I take it out and clean it or do i need to get a new one?

is it an easy install if I get a new one?

 

my mechanic cleaned my maf yesterday in hopes to cure a sluggish car. It shifts like butter now, but it still doesn't pull very hard when i accelerate. It just feels wimpy. any ideas?

ftr, they did a driveability scan of some junk and cleaned the maf for 90 bones.

 

i just cleaned my maf right now and it feels better, no more hesitation and limitation at the 4k rpm mark. feels good. thanks guys

 

You have an '00 you could have gotten a brand new one for the same price.

 

yeah that's the first thing i noticed. if it didn't feel tons better i'd raise a fuss, but it seems to be golden.

 

^^hell i cleaned my own maf for free, with a can of CRC MAF cleaner...my car shifts alot smoother, i did this earlier this year when i installed my Berk Intake

 

ok...im doing this tonite clean maf...better shifting...what else could you want

 

i should have cleaned it earlier, now i need to drop my pan and clean that as well. hopefully, it'll prolong the life of the tranny.

 

yeah mine did the same thing.....i had a 01 maf in my car....it would shoot up until it got to 4500k....hesitate until 5000k then take off again....i needed another maf sensor. and brand new maf's aint cheap at all; new 02 mafs are 375 at the auto store and about 500 at the dealer. so i went and got a new one...eliminated all the problems i had. and u can install and uninstall it yourself, all u need is a T15 or T20 wrench.

 

Why are MAF’s being associated with transmissions? They are two completely different UNRELATED items.

 

because a failing MAF has been related to more than 1 slow shifting trans

 

Ok I will say it again, They are two completely different UNRELATED items.

 

lol, then i will say it again: two unrelated items, although the MAF has been seen to affect the trans shifting

 

I have a K&N drop in filter.

I notice that my transmission's shift quality changes from how well the motor runs. For example, after I change the motor oil, the motor runs smoother, making the transmission shift MUCH smoother, especially upshifts from 1st to 2nd.

Every time I clean the K&N filter, the transmission also shifts smoother. 1st to 2nd is smoother.

Every time I use fuel injector cleaner, transmission shifts smoother. 1st to 2nd is smoother.

Replaced spark plugs with iridum, car ran a little smoother, 1st to 2nd shift is also smoother.

When I threw a code, tranny shifted like ****, with shift shock at 1st to 2nd up shifts. Replaced the MAF sensor to solve the CEL, shift quality back to "normal".

When I had a ignition coil problem and threw a CEL, 1st and 2nd upshifts were horrible. Replaced the problematic coil, shift quality back to normal.

Needless to say, shift quality (especially 1st to 2nd) in my case is heavily dependent on how smooth the engine operates.

 

H3ll that's what I'm talking about.l

 

Then I will say this, it is Impossible for two completely different UNRELATED items to affect eachother.


When I replaced my MAF my radio played louder, and my windows rolled up faster.

 

could be your MAF was sucking a lot of battery life in its weakened state and when fixed, your radio and window motors could get more juice, in return working better.

 

^ Ah i think hes being sarcastic, lol how does a air filter effect your transmission in shifting??????All a cleaner filter might do is deliver more air to the engine, with automatics it all depends on how you drive

 

haha i like the sarcasm rofl

 

tranny problem is caused by bad TCM...not MAF

 

so if i were to get a k&n drop in filter would i have the MAF problem?

 

some people have problems, some have not had problems.

 

I dont have any problems, the only thing i had to get used to was Low end torque not as responsive as before

 

Its about time you chimed in here

 

think of sooner as moses coming off the mount with the 10 commandments to see all of us acting wild and crazy worshipping false idols.

 

i guess i cant follow his guiding light...i specifically remember a thread from not too long ago where tons of people noticed a change in the trans shifting after a new/cleaned MAF. maybe the TCU has a relation to the MAF?

Edit: Remember CRC MAF cleaner? http://forums.maxima.org/showthread.php?t=463385&page=4

 

I can understand how smoother acceleration will make for smoother shifts, but as far as any kind of hesitation from simply replacing an air filter, or cleaning the maf, that makes no sense whatsoever. I just got my max, so I'll put in a k&n next oil change and report back for everyone.

 

well when the maf is dirty, it'll send false signals to the car, and all sort of crazy things can happen. after you clean it, everything will be all gravy. don't know what is so impossible about that.

 

Because the MAF ( Mass Air Flow ) sensor measures the amount of airflow going into the intake. Then that is what the PCU uses to determine the amount of fuel to send to each combustion chamber. There is NO WAY in hell that a new air filter, aftermarket air filter, or dirty or clean maf will make the transmission hesitate when shifting.

My guess is that your now noticing a problem with the transmission that you might have had all along, but didn't notice it because the motor wasn't running as smoothly. Does this not make a little more sense?

 

so are you saying once i cleaned the MAF, the problem magically disappeared? hmmm. whatever you say man, as long as it works for u. im just stating what happened, you can take it however you want it

 

He's just saying a hesitating motor due to a dirty maf or air filter amplifies the pre-existing shifting issue.

But yeah, internet diagnostic is useless. You have to drive the car for a while and be in it in order to realize the differences something makes.

 

Good noob!!!!!

You, Sooner, & I will get along great if you keep that same attitude.

 

welcome

 

Agreed. Two seperate topics. If you said performance, thats one thing but hesitation in tranny, two seperate subjects. I replaced my MAF around 80k or so...it seems to be the common issue with 5th gens like the 4th gens have tranny issues....