2000 Maxima, loses power at WOT

[jaspfs1]

Hey guys, was wondering if i could get some help, i took my maxi to the shop this past Saturday because I'm loosing power at wide open throttle and couldn't figure out why?? waiting for the shop to call me back with the diagnoses, anyone know or have and idea on what could be wrong so i don't get ripped off? thanks.

[jltibbs]

Was your check engine light on?

[240RB1]

you could check your fuel filter if its old/clogged when you demand more fuel it cant pass and thus feel sluggish.Just an idea

on another note who is the asian guy in your avatar? i have seen a couple people here with that avatart but never got around to find or ask who it was.

[jltibbs]

on another note who is the asian guy in your avatar? i have seen a couple people here with that avatart but never got around to find or ask who it was.

Jun Tao

[jaspfs1]

thanks guys for the tips, the mechanic called me back and said that it was the mass airflow sensor, they installed it and it runs fine now, and for the asian dude idk who he is, just thought it looked cool.

[wantanabe]

nice, how much did he charge you?

[jaspfs1]

kinda of embarrassed to say, but i did need to pull the vaseline out for a simple repair, but anyways it was about $388.00 for everything diagnoses, parts, and repair, bottom line my headache is gone

[arunciks]

had same issue with i30 4 years ago... airflow sensor.. since noone could detect brought to the dealership... total charges lil bit above 500$... if u know u can buy the sensor for like 70$ .. its easy to isntall and reachable next to the air filter....

[2000maximagxe]

WOW you arent jokin bout him jus straight up bending you over the counter. i replaced my maf sensor and it was a $70.00 part from napa and took me 10 mins to put in.

[loystock]

Let's put it in proper perspective. What you get from Napa are refurbished MAF sensors. And you have to turn over the old MAF sensor (core) to get a lower price. From the dealer, you get brand new one so it's more expensive (and you keep your old sensor). It's like buying a new car vs. a used car. In the used car scenario, you also have to trade-in your old car to get a lower price. Also, the part for 95-99 Maxima (96-99 I30) is different and more expensive than 00-01 Maxima (00-01 I30). Here is the price comparison:

MAF Sensor for 95-99 Maxima/96-99 I30, P/N: 22680-31U00 (old), 22680-31U05 (new)Napa (refurbished): $258 less $50 for core = $208IoS-infinitipartsUSA.com (new): MSRP @ $562, discounted price @ $450OnLine (aftermarket, refurbished, etc): >$200

MAF Sensor for 00-01 Maxima/00-01 I30, P/N: 22680-AD200 (original), 22680-AD201 (alternate)Napa (refurbished): $119 less $55 for core = $64IoS-infinitipartsUSA.com (new): MSRP @ $488, discounted price @ $384OnLine (aftermarket, refurbished, etc): >$90

If you are resourceful enough, you can just buy the sensing element instead of the whole MAF meter assembly (housing, sensor, o-ring, connector., etc). For the 00-01 Maxima, the sensor alone, P/N: 22680-2Y001 is @ $78 from IoS. Just be very careful during the installation as the sensing element can easily get damaged.

So it's really up to the consumer which one to buy - new or rebuilt. But given the price difference and age of our cars. I myself would buy the part from Napa.

[cdotadot]

do you have to go to the dealer to have the ECU or something reprogrammed when you replace the MAF?

[loystock]

In most applications, no. The ECU should be able to relearn the new MAF sensor signal over time. If you want, you can reset the ECU by disconnecting the battery -5/15/30 minutes or more depending on the car model, or just leave it disconnected overnight. Most newer cars, 2000 and beyond, have a reset procedure using a combination of ignition switch ON/OFF and depressing /releasing the gas pedal for a given time frame while checking the status of the CEL.

With a new MAF sensor, drive on city streets normally for several minutes then on an empty highway/road, do some accelerations/WOTs and start-stop to allow the ECU to relearn the shifting points.

[jetroy240]

Some new MAF sensors has intructions that it need ECM reprogramming depends on the part number. So, better check w/ your Nissan dealer. Make sure u got a good oem air filter too.