My 2000 max, which i just bought, has 100,000 miles on it, and has a hesitation when accelerating up around 3500 or 4000 rpm, and above. It runs well at constant rpm, but under a load it hesitates, and it's quite noticeable (to me). The car probably hasn't had the plugs changed, so I picked up a set of Bosch +4 Platinums for it, and i'm going to clean out the throttle body. What do you think this could be? I heard the MAF's don't last overly long on these cars. I was also reading something about the knock sensor. There are no engine lights on in the vehicle.

 

As I said in your other thread...

Start with the plugs, they have to be dead at 100k. If there is still the problem look at the coils and MAF.

Also do an induction service, we still have EGR's on 2000 Maximas and are Intake plenums get DIRTY thanks to them...

 

Thanks for the help. I'll give the plugs a try, clean the throttle body, and i'll throw in some injector cleaner as well. I'll keep you posted.

 

I have a similiar problem.. I have a 2k Max with abuot 64k miles on it. I was doing about 90 on the way to VA and I realized that the RPM's were excessively high.. I had the car in O/D. Usually when I take my foot off the pedal it shifts down typically. Assuming this is normal for when u hit the gas coming from an on ramp. The car didn't shift at all, the RPMS shot down from about 4 - 4.25 to about 3 without shifting, and it would have went lower if I wasn't trying to maintain speed. Whenever I hit the gas however it wasn't shifting gears. I then turned the O/D off and the car seemed to be shifting fine. About 20 minutes later I stopped off, turned the car off for about 15-20 minutes as I was getting a bite to eat. I then left the car with the O/D on and it seemed to be shifting fine since. (about 500 miles, from NJ to VA, then back to NY). The check engine light never came on, but I was wondering what kind of feedback people may have.

 

If you give the car hard acceleration, does the "pull" drop off around 3.5k-4k? If so, you could possibly need a new valve body on your transmission, like I did...

 

It's a 5 speed.

 

same problem here guys.....
i have a 2000 maxima with 74k miles one it....
my ground wire is bad on torque converter, thats what a tranny guy told me, so i'll have that fixed up once i change my fluid, really soon....
and once i get up to 3800 rpm and 4000rpm, my car will not pull...it will pull but not really good....
do u guys think that its the maf?
huso

 

sounds just like mine.

 

i thought that it was my air filter, but i bought a new one, and its still doing the same thing....
also idk if the VIAS could be the cause of it......i will have to look into it lil more
huso

 

Waht is the VIAS?

 

I have the same problem... it has a hesitation at around 3500-4000 rpm i feel like a little dip in power and its accelarating slowly up until red line then when it shifts to next gear it feels like an S/C was turned on and i got some boost hehe...

I have the hesitation/rough idle at cold starts so i know thats prob from the maf... I was thinking that this problem at 3500rpm was due to the VIAS but mostly im reading it says the VIAS kicks in at only 5000rpm...

I had my tranny changed by nissan at 22000mi... now im at 54000 and i have the bad slip from 1st to 2nd with a hard shift again and im worried its gonna die on me again...

i dunno... if anyone finds anything out lemme know please

thanks
-Danny

 

damm, psing23 u already had ur trany changed.....
i have 79k and thanks god everythig is in excellent condition with my tranny....
but this 3500 - 4000rpm stuff just started going bad like 1 week ago......
and VIAS is Variable Intake Air System.

 

MAF MAF MAF youve gotta replace it. Thats exactly what happened to my 00 Autotragic

 

how sure are u man? cause' i dont wanna spend 80 bucks, and not be able to fix the problem....
thx
huso

 

wow, MAF is the first thing I thought of when I saw this post. I'd say MAF. not 100% sure though.

 

at what mileage does maf usually die? whats the cause of it to die on us?
i have 79k, and idk if thats enough driving for maf to die.....
huso

 

Its not a waste of money. Believe me you will need to replace it later why not now.

Theres is no typical mileage that the MAF fails. The 00 MAFs are so weak. My friend's Maxima failed at 60K miles and mine at 116K miles so its very weak to predict. It wont show any CEL until it has totally failed.

Check your MAF for a small green sticker. If it doesnt have it then it has not been changed

 

It really depends... I had three die in a year and a half.

Now I am on the same one for three years

BTW: after I put in the last MAF, I also put in a K&N drop in and have been using K&N eversince. When I blew through the three, I was using stock Nissan filters.

Edit: they have a MAF cleaning spray now, check it out in the fluids section and try it if you want.

 

i just ordered a new MAF from Dave B... im pretty sure that it will fix my rough idle... hopefully it will take care of the hesitation at the 3500/4000 mark too... after i change the MAF ill take my VIAS apart and see if that needs to get glued like i saw in the other posts...

 

Today I changed my plugs to Bosch Platinum +4's, took apart the intake, and cleaned it out thoroughly. The MAF seemed to be clean, but I sprayed the **** out of it with brakeclean anyways. I used carb cleaner on the throttlebody (which was very dirty), and a toothbrush to clean it to the best of my ability. The car feels 95% better. There is still a very slight hesitation, but nothing to write home about.

I called the local Nissan dealer about the MAF sensor for a price, and the guy there tells me they can only get the entire unit, and it's $650 Cdn. Rediculous. Does anyone have a part number for just the sensor?

 

ASK famous Dave B

 

For anyone looking for a MAF, I found a pretty cheap one here and its brand new

Click Here

 

I also found a video with cleaning the MAF for anyone who is interested in just cleaning it first before replacing it

Video Here

 

Well I got my MAF replaced Tues (it completely failed)...and under heavy throttle, the car hestitates at 4000-4500rpm (in second gear) and then climbs really slow...So MAF is out of the question, I think...I have an AEM dry air filter on, car runs great under reg driving, but under spirited, it hesitates at 4000-4500rpm...and in first gear, if I go hard, revs climb quick, but there is a small blip in the rpm at around 3500rpm and then clmbs slow, but not as slow as if in second gear...so recommend changing spark plugs? Could it be the catalytic converter? No CEL on.

 

I just recently but a CAI on and when im driving normally i dont have any problems but if i get on the gas ill feel a drop back in pull after 3500 rpm, i also dont have any CEL or SES light. I guess it may be the MAF but i dk. Im taking it to my friend at nissan soon so ill let you know if he can give me a straight forward answer.

 

I have an 01 with 71K on it, and am also experiencing the hesitation between 3500-4000RPM. Where is the best place (pricewise) to buy a new MAF?

 

Just go to your local Nissan dealership and pick one up for 114.00. I just recently replaced mine. I haven't had my ECM reprogrammed yet (which nissan recommends for the new part) but i will probably go ahead and get that done since my computer just threw a o2 sensor (lean) bank 2 code.

Advice: REPLACE THE MAF and have the ECM reporgrammed

 

My nissan dealer quoted me at $130 for the MAF, if my VIN matches the new part. Do you know how much it costs to get the ECM reprogrammed?

 

its the MAF, i had the same problem, i just got some MAF cleaner and cleaned the MAF and now its as good as new. I suggest you spend 6 bucks on the MAF cleaner before you drop 130 on a new MAF, worst comes to worst, your MAF will only be 6 dollars more expensive.

 

Very true. I'll go out and find some MAF cleaner and try that. Any suggestions on the brand?

 

theres only 1 brand, its CRC. they have it at most autoshops.

 

I drive a 00 5spd.

I've got the same problem, but it's VERY dramatic. I don't know if it's more dramatic due to my mods or not, but under full throttle it's enough to make you jerk forward. Mine hits right around 3,800 and passes soon, then it accelerates hard until redline. My advice to those who are slow to redline (3.0 maxes) is to just jerk out the vais valve and throw it in the trash. I'm going to do the MAF cleaner to see if it helps, I'll post results.

 

My problem is that tires break loose around 3500RPM till redline if I get on it, what could be the problem ?

 

to much throttle or bad tires

 

you should get NGK's instead of bosch... theyre not good for our engines.

 

Ok, I've never been one to believe in simple quick fixes, but, damn, my car's fun to drive again. I got the crc MAF cleaner and used it, along with cleaning the throttle body, and man, what a difference. As I said before, the hesitation that I experienced was pretty bad and the engine was acting pretty sluggish in general. I spent some time on it and then drove the dog crap out of it just now and it definately helped. The car drives like it did a couple of years ago and it's a blast. I would def. recomend for everyone (although I know that most already have) use this stuff to clean your MAF sensor. It literally took about 15 minutes start to finish with my setup. It's been a long while since I've been on the org, but this definately was a big help, thanks guys.