Confused MAF Sensor?
#2
Re: Confused MAF Sensor?
Originally posted by Scott Fife
I have a panel type K & N filter in my 89 GXE. The idle is generally okay (fairly smooth) but sometimes it drops off noticably then goes up higher than normal. Any suggestions?
I have a panel type K & N filter in my 89 GXE. The idle is generally okay (fairly smooth) but sometimes it drops off noticably then goes up higher than normal. Any suggestions?
-V
#3
Re: Re: Confused MAF Sensor?
Originally posted by vmok
My 1990 SE does that as well. It seems like the 3rd gen Max is especially sensitive to accesory drives changing the RPM, i.e. when you turn off the headlights, the rpm on my car goes up to approx 1400 before settling back down to 1000 or so. It's probably just the ecu seeing the rev's drop more than normal and trying to compensate by giving a slightly faster idle...
-V
My 1990 SE does that as well. It seems like the 3rd gen Max is especially sensitive to accesory drives changing the RPM, i.e. when you turn off the headlights, the rpm on my car goes up to approx 1400 before settling back down to 1000 or so. It's probably just the ecu seeing the rev's drop more than normal and trying to compensate by giving a slightly faster idle...
-V
#4
Re: Re: Re: Confused MAF Sensor?
Originally posted by Scott Fife
The reason I was wondering if something is wrong with the MAF or other sensor (such as O2 sensor) is that it runs perfectly normal with the stock Nissan air filter.
The reason I was wondering if something is wrong with the MAF or other sensor (such as O2 sensor) is that it runs perfectly normal with the stock Nissan air filter.
1. The K&N might be over-oiled and the oil might be coating the hotwire sensor on the MAF causing erratic readings. When you change back, the MAF is able to burn off most of the contaminants and thereby get a good reading.
2. The air going through the K&N filter is turbulent and not as smooth as the air going through the factory filter. The erratic air movement could be causing problems with the air flow meter readings, which is why when people use the cone type filters, I normally recommend a velocity stack/air horn style adapter so that air is smoothed as it enters the MAF.
-V
#6
Re: Re: Re: Re: Confused MAF Sensor?
Originally posted by vmok
Only things I can think of are:
1. The K&N might be over-oiled and the oil might be coating the hotwire sensor on the MAF causing erratic readings. When you change back, the MAF is able to burn off most of the contaminants and thereby get a good reading.
2. The air going through the K&N filter is turbulent and not as smooth as the air going through the factory filter. The erratic air movement could be causing problems with the air flow meter readings, which is why when people use the cone type filters, I normally recommend a velocity stack/air horn style adapter so that air is smoothed as it enters the MAF.
-V
Only things I can think of are:
1. The K&N might be over-oiled and the oil might be coating the hotwire sensor on the MAF causing erratic readings. When you change back, the MAF is able to burn off most of the contaminants and thereby get a good reading.
2. The air going through the K&N filter is turbulent and not as smooth as the air going through the factory filter. The erratic air movement could be causing problems with the air flow meter readings, which is why when people use the cone type filters, I normally recommend a velocity stack/air horn style adapter so that air is smoothed as it enters the MAF.
-V
Thread
Thread Starter
Forum
Replies
Last Post
my03maxima
7th Generation Maxima (2009-2015)
9
07-28-2024 07:40 AM
TallTom
5th Generation Maxima (2000-2003)
50
07-08-2022 09:54 AM