How can you tell that you need a new MAF? Thanks

 

Ses
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mine was bad and i didnt have a SES light on...

 

From the FAQs:

http://forums.maxima.org/showthread....21#post1173121

 

I wish people would take puppetmaster's advice first before posting. Seems like the same topic is coming up every single day.

 

Is it just me but why isn't there a page 2 on the TSB's thread

 

I have blown 2 MAF so far. The first MAF just went bad, car drives close to normal until higher RPM, no high end power, bogs a lot...no SES light. The second one BLEW. It triggered SES light, code was P1102, power surges (jerks) like a ****, crazily unstable idle, car will not run past like ~2500rpm. I'm currently using a 2k1 MAF with the 22680-AM600 on the way from nissan.

 

I know that we are supposed to look in the forums, but alot of the links are dead. I have weird stuff happening to my 00 GLE and i am thinking it could be the MAF or coils... regardless it is alot of $ for a teacher to spend. Thanks to those who reply to the posts made by people who aren't as mechanically inclined.

 

Can you buy a better MAF or aftermarket version? Is the 2001 version better then the 2000?

 

From what i have know, the 2k1 MAF (22680-2Y001) and the 2k3 MAF (22680-AM600) are the strongest MAF available for the 5th gen maxima. The 2k1 unit is less than $100 and the 2k3 unit is over $400. There is no aftermarket MAF for our cars yet. I have personally blown 2 2k3 units and the 2k1 is still running strong.

 

can anyone link to the thread that explains the different versions of the MAFs? There was something about installing in with a 2k1 on a 2k2+ and relocating the sensor.

 

http://forums.maxima.org/showthread....ght=thermistor

Key words "IAT+thermistor" if ya wanna search for more...

 

well I along with everyone else on the forum believe that i too have a failed MAF.

BUT, my problem is that i dont have low end power 2K-3K rpm. So is it possible that the MAF affects both the low end and high end power of a maxima????

 

sometimes if you clean the throtle body you will notice a better response and that takes care of the thought of having a bad MAF...

 

The FAQ didn't cover what was going wrong with my MAF. I'd drop the car into neutral and the RPM's would fall below 500, and the engine would shudder and die; not everytime, but enough to know there's a problem.

I have a 2K SE, and Nissan sold me the 22680-2Y001. I am going to get the ECU updated as per the bulletin (just in case). So they'll get $98 out of me for a fast computer hook up. Gotta love the stealerships.

Oh, since I changed it out, no more dying engine. Thanks to all that helped!!

 

ECU repgrogram is cover to 8yr/80k emmisions warrantyi so i woudl definatly throw that in the dealr's face. I confirmed this with nissan NA

 

The 22680-2Y001 MAFS is a "countermeasure" to the older MAFS and the ECM NEEDS to be reflashed to that specific part. I have personally installed at least 30 of the updated mafs and have not had any of the cars come back for a maf problem.

 

BUMP

Sorry to bump an old thread, but I'm encountering a similar problem. My '00 SE 5 spd hesitates when I have the pedal to the floor until it hits about 28-2900 RPM in any gear. It revs normally without load, and Saturday we put a new MAF in (I had cleaned the current MAF and reset the ECM a few weeks ago, with no change). New MAF made no change, though I don't think the ECM was reset by the shop that did it.

Also, have replaced all 6 plugs with Iridiums and have grey dot coils. I replaced one of the precats (P0430 code - honeycomb was pushed back into the coverter housing about 3 inches), and took it in for a reprogram -- which they said was unnecessary for that replacement. But they did pull a P0325 code, which is the KS. Could a bad KS be robbing me of low end power to the point where the car doesn't respond at all to input on the accelerator? If so, what else should I do while I have the intake manifold off to get to the KS?

Does anyone have any thoughts about this?

 

There's a thread for a reason ya know.


Is your IAT dangling somewhere in the engine bay and not in the intake tube where it should be?

 

I thought on 5th gens that the IAT was built into the MAF. If the IAT was out of place or malfunctioning, wouldn't it throw a code?

I'll go take a look at it now. Just let me put on my NEWBIE boots...

 

00-01 has is in the intake tube.

02-03's have it built into the MAF.

 

IAT is attached, not dangling. So that's not it...

 

I want to say the KS next, but those symptoms are a little extreme from what you're stating. Full throttle and no response until 2800-2900 ... But it has to give some response since the RPM's are actually rising (since they do actually get to 2800+).

So, slight hesitation could be the KS.

 

To more accurately state, RPMs are rising (b/c I'm getting to 2800), but there's little response to my input, i.e. depressing the accelerator does not change the rate of acceleration, or the rate at which the RPMs increase. Once I hit 2800 RPM, there is a surge of power that pushes me back into the seat -- the response I expect from my Max. It's just that I expect it without the hesitation or lag or unresponsiveness.

I have no codes for the coils, the engine doesn't really idle rough, no misfire codes. As of yesterday, though, I have a P0140 code, which is a rear O2 high voltage code. High voltage = rich, so one might think that the ECM is regulating on the lean side. But from what I've read, the rear O2 is there to monitor cat function and doesn't affect the mix like the front O2s do. Also, shouldn't the P0325 tell the ECM to retard timing and run richer? I suppose it's possible that the P0325 could be at fault for the 0140, but that doesn't seem likely either.

Any thoughts on doing a backpressure test to see if the main cat's blocked? I would think that I'd see the reverse if that were the case. That I'd lose power at higher RPMs. And, of course, these symptons only appear when under load. In neutral, she revs all the way to redline with no hesitation, no misfire, and nothing that would indicate blocked exhaust...