Info on car:
6MT, Frankencar w/Apexi, 89k, stock MAF.

Synopsis:
I'm fairly sure my MAF is blown, but would like verification before I purchase one from Dave B. Took it to WOT yesterday, car became hesitant, did not rev past 2500rpm and then eventually died (essentially stalled). Started up, then rpm's slowly diminished until car died. Took off MAF, waited a day. Engine was cool (55 degrees), threw MAF back on. Started and it held idle RPM. Would not rev past 2500rpm again. Examined MAF and didn't seen the small wire broken, but not sure if that's the only indicator of it blown. SES light is now on as well. MAF blown I take it? Thanks.

 

There you go... you had the real symtoms of a failed MAF..... check to see if you want to do a 01 swap... the 02-03 is really expensive... there is a HOw to convert an 01 to work in your car.. good luck

 

yeah..sounds gone...try unplugging the maf and seeing if the symptoms are the exact same

try the 99$ 5g maf over the 5.5gen 400$ one.... on page 1 or 2 on the 5G section.. someone just did this with pics said it worked great and saved them 300 bucks..

 

SEVERE PINGING, Lack Of Power, Bad idle almost stalling, no revs, just dies when your rev.

 

Are you eluding that it might be a knock sensor/timing issue?

 

That wire is the IAT, piggy-backed on the MAF for the 5.5 gen.

If you get the 5.0 gen MAF replacement and swap the IAT, I'd be very interested in reading your experience on that. You seem to know your way around your car, MIK3... so this feels like a good test case for when mine goes. Reading this forum, that seems inevitable.

http://forums.maxima.org/5th-generat...-pictures.html

Keep us updated. Good luck.

 

Well, I'm going to tackle the 2k1-2k2 MAF swap. The write up seems harmless. Just ordered it from Dave B. Told me his orders were a bit backed up, so he bumped me up to Express shipping free of charge. The guy is just awesome!

I'll keep you posted Rochester on how the transplant works out.

Thanks all for the replies!

 

My car has the same exact mileage as your car. I hope this doesn't happen to me soon... Good luck fixing it and keep us updated.

 

interested in your findings with the new older version MAF

 

Nope not at all, Trust me, I went through it, I thought it was timing and a knock sensor, also i thought it was a vaccum leak so i replaced all the intake manifold seals, i replaced the fuel pump and filter and i still had the issues, If you are having any issues asi described i wouldent feel bad betting my pay on it, but i wont take it that far

 

Haha. Gotcha. The 2k1 MAF sensor should be here shortly. Looking forward to results.

 

When you're done with the IAT swap, it would be interesting if you cracked open the MAF plastic and took pics of the interior.

Or maybe it won't actually be interesting

For $400, there's probably a half-carat diamond inside, or kryptonite, or something equally amazing

 

The MAFs on a E39 BMW M5 are about ~$525 each and the car has two, so we don't have it so bad.

 

That's ridiculous. Then again, if you can afford and M5, you can afford ~$1050 worth of MAF sensors...

 

I guess.... A used 2002-2003 M5 in great shape commands a price of $20-25k these days, so the price of entry isn't really very high, but the maintenance and the upkeep will bury you if you're not a DIY guy and try to use the local stealership.

 

exact same symtoms i had and i did the 2k1 conversion that Rochester is talking about, worked beautifully, feels like a brand new car. Good luck.

 

Well, the transfer is complete and it was a success! Very easily done. Used cutting pliers to separate the two metallic ends holding the wire. Then used the pliers again to cut the plastic part holding the wire at its bend. Transplanted the wire to the 2k1 MAF and secured it with RTV at the bend. I'll have to go clear my SES light w/ my friends OBD-II, but other than that, success. Made sure to undo my negative battery terminal overnight to avoid any ECU read complications.

I will be driving it like a granny for the next 500 miles just to ensure a proper break in period. But, just under normal driving conditions, I can feel my low end has returned and it is a much smoother progression in power. Very happy overall.

Final price for the whole procedure: $91

Price quoted from dealership: ~$575

 

Very well done, Mike! Glad to hear you're initial experience is positive, and the procedure was simple. RTV to secure the loop... great idea! Man, that's insane the dealership wants nearly $600 to replace this little thing.

Be sure to follow up if things go south, but that's not going to happen. No no no no... sorry, don't want to jinx you.

Now that you have your old MAF in hand and pretty much useless, how about cracking it open?

 

Yes, curiosity is surely getting the best of me. I plan on opening it up and taking a look at it tonight. I'll post pictures if I find anything interest.

I also now have a MAF housing for sale if anyone wants one.

 

Was your original housing pretty dirty? I mean, it's basically a hollow tube with a screen on the end, but still.

Really, why is there a screen on the MAF housing? When you looked at that, did you consider removing it?

 

My original housing wasn't really dirty at all. There was some topical dirt, but nothing much. I think the screen is just a precautionary measure. If by some chance there is a hole or tear in your air filter, it'd prevent something from flying into your manifold. I trust my Apexi, but I kept my screen on for piece of mind. I'm also not sure if removing the screen would mess up air-flow readings or not. I don't think that matters though.

 

My 2001 was experiencing the "wall" anywhere between 3500-5000 rpms... serious lack of power and sucking gas like a V8. Finally replaced the MAF a few days ago. The car runs like new... no hesitation whatsoever and absolute smooth & quick build-up on the tach...

 

in terms of the screen... i have read somewhere on here where the screen evens out airflow or some bs like that lol..

maybe someone else can elaborate...

 

Be sure to smile at the dealership when you pass by!! You know they are giving someone the business.......And it wasn't you. (Arrest the stealership)

 

just replaced mine yesterday and I was quickly reminded why I got my MAX!!

 

Here you go Rochester:

MAF SENSOR DEATH

 

It's not the dealership that's ripping you off with the 2 different (but 99% the same) MAF parts, it's NISSAN. And even then, I'm thinking it's not intentional.

That doesn't excuse it, but I wouldn't assume something predatory and malicious on the Dealerships.