aftermarket MAF sensor.

[ranimouf]

I just installed A cardone MAF sensor in my 01 QX4 which was driving like crap.But after installing this MAF,car is driving fine,but sometimes hesitates at take off,and also rpms sometimes keeps going up and down when car is in park. I read in various threads here that I can use an 01 Maxima MAF sensor 22680-2Y001. Can anybody here confirms this and at least had this done for more than 3 months,because I read that some had codes coming up after the swap. Also does it need any modification because it has five pins,rather than 4 pins which 01QX4/Pathfinder have.Thanks so much.Sorry I forgot to add that I still have code P0100 even after reset.
Modified by ranimouf at 10:54 AM 11/24/2009

[ranimouf]

rI' ve had it with this car.I had CEL at 65k.I had oil leaks AT 80k.fixed valve cover leak.Main seal trans leak.Changed all spark plugs,and ignition coils,because of stupid unreliable codes.I also changed cam sensor bs of p1145,but did'nt change a thing.Now MAF sensor which costs 600.00 here in FL.Tried to save money and got and aftermarket one,but still some problems.I am going auction shopping tomorrow.Hopefully, I'll a get a good price on another car for the wife who keep complaining about the QX4.Thanks to everybody here for all the help.
Modified by ranimouf at 11:04 AM 11/24/2009

[korbeano89]

the idling up and down while its in park sounds like i could be you throttle positioning sensor.

[RemedialEd]

My original MAF died last Friday, and I mean died! Output voltage of 0.1V at idle, which throws not only the check engine light but also the TCS OFF and SLIP lights to really get my attention.

I went to Autozone and bought their replacement and it appeared to work just fine that evening and all of Saturday. However, on Sunday it threw the P0100 code again along with the TCS OFF and SLIP lights again. I figured that the computer just isn't used to the different calibration of this part versus the original, so I reset it and everything was reasonably ok but it was still driving irregularly where sometimes its fine and other times it throws codes and complains.

This evening, (it's Tuesday now), I went ahead and unhooked the battery for 30 minutes and that reset the error code (I checked it with my OBDII reader to make sure it had cleared everything), and so I figured that it would have cleared all the MAF calibration data as well. I had hoped this would get it to acclimate to the new MAF. It appears to be driving fine again, but if I bring it up to 1000RPM and then let go, it sometimes drops to where it almost stalls and the TCS OFF and SLIP light blink on momentarily. Its also throwing the P0100 code internally though its not lighting the CEL light yet.

Is there some kind of calibration procedure I should have done, or do you think I just got a bum MAF from Autozone? This wouldn't be the first time they sold me garbage electrical parts, and I now remember swearing that I would never buy electrical parts from them again! The last time, it was starter relays that seized up in the "ON" position causing me to have to rip the battery cable off before they burned up the starter on my 1987 Mustang GT.

Thanks in advance,Ed

[RemedialEd]

My apologies! I meant to post this in the 1997 Q45 forum. I'd still welcome and appreciate any insights.

[ranimouf]

I think you should get rid of that piece of garbage Cardone MAF SENSOR. Autozone sell cardone MAFsensors. They wanted to charge me $250 for 01 QX4 with my core and,I woudn't be able to return it if it doesn't work.So I didn't buy it, but I found the same one on Ebay Brand new for 95.00 inc ship,and was returnable. When I got it I installed it , but the car wasn't running good.hesitation rpms not stable. I took it out ,and replaced it with the 01 Maxima MAF$114.00 instead of $600 for an 01 QX4 and everything was fine .Also code P0100 went away after I cleared it with my scanner. Hope this helps.