Mass Airflow Sensor

[DavidYan]

i couldnt help but notice that everyone on this board is starting a trend of removing and cleaning the MAF sensor. I just wanted to input that these are parts that should not really be touched and most of the time if it does get dirty especially so early in a cars life (im sure most people arent close to 150000 miles+ yet) it is the result of an overoiled reuseable air filter. The maf sensor is designed never to be touched and is only suppose to be replaced when there are problems with it reading correctly. Sometimes improper cleaning actually damages it. im not posting to flame or call anyone stupid im just wondering why everybody thinks it is definitely the answer to all drivability problems. A dirty sensor may have been the problem for one or a few of you but it is not the answer for all CEL issues and rough running/idling issues. If it is maybe you are over oiling the k&n style filter. Just remember almost all cars run their whole life without any MAF problems, unless it was poorly designed it should be fine and left alone.

David Yan

[Chumpchiggy]

Umm, thanks I guess... :rolleyes:

[t2000gts]

a lot of people use aftermarket intakes here, and the maf and air temp sensor gets dirty and full of oil. just cleaning it with video head cleaner isn't gonna do anything unless you physically start messing with it.

and lots of people who've done it have noticed the car idling and running more smoothly.

[Griffin]

Originally posted by DavidYan
i couldnt help but notice that everyone on this board is starting a trend of removing and cleaning the MAF sensor. I just wanted to input that these are parts that should not really be touched and most of the time if it does get dirty especially so early in a cars life (im sure most people arent close to 150000 miles+ yet) it is the result of an overoiled reuseable air filter. The maf sensor is designed never to be touched and is only suppose to be replaced when there are problems with it reading correctly. Sometimes improper cleaning actually damages it. im not posting to flame or call anyone stupid im just wondering why everybody thinks it is definitely the answer to all drivability problems. A dirty sensor may have been the problem for one or a few of you but it is not the answer for all CEL issues and rough running/idling issues. If it is maybe you are over oiling the k&n style filter. Just remember almost all cars run their whole life without any MAF problems, unless it was poorly designed it should be fine and left alone.

David Yan

You WOULD be right if it werent for teh fact that like 90% of the people here run a CAI with a cone type foam filter. And 90% of those people over-oil. After a while - presto - soot / dirt buildup on ye' old MAF and a P0171 lean code. Its not the oNLY fix, just the most common one. A new sensor costs a bit over $100, a can of non-residue cleaner is like 2 bucks... if your MAF is screwed up anyways its easy math.... But your right that its not the only problem you might have and its not gonna fix a lot of stuff.

Griffin

[cruzerz545]

he's right. The oil when hot can vaporize and cause the wire in the MAF to burn off. I changed my filter to none K&N.

[

QUOTE]Originally posted by DavidYan
i couldnt help but notice that everyone on this board is starting a trend of removing and cleaning the MAF sensor. I just wanted to input that these are parts that should not really be touched and most of the time if it does get dirty especially so early in a cars life (im sure most people arent close to 150000 miles+ yet) it is the result of an overoiled reuseable air filter. The maf sensor is designed never to be touched and is only suppose to be replaced when there are problems with it reading correctly. Sometimes improper cleaning actually damages it. im not posting to flame or call anyone stupid im just wondering why everybody thinks it is definitely the answer to all drivability problems. A dirty sensor may have been the problem for one or a few of you but it is not the answer for all CEL issues and rough running/idling issues. If it is maybe you are over oiling the k&n style filter. Just remember almost all cars run their whole life without any MAF problems, unless it was poorly designed it should be fine and left alone.

David Yan [/QUOTE]

[iMouseGTS]

Wow, haven't posted in forever...

I was one of the first or THE first to post a problem with horrible throttle response, and engine choking when you blip the throttle about a year ago. All this with the Injen CAI. Then a year later without a problem I get a CEL, and bought a SAFC to correct it. This past month, the CEL returns and the car is driving worse than ever. I read up again and everyone is cleaning their MAF. So I clean it with a Q-Tip and it's just filty. No grease, no cleaners, just a dry Q-tip, put it back in and it's RUNNING LIKE NEW. The S-AFC is even set back down to 0% now.

[RJpinoyGQ1]

i juss installed my aem cai and put the sensor in where it was spose too..the cel turned on so i disconnected my battery then put it back on. the cel disappeared for a day but came back. think its the sensor?

[Griffin]

Originally posted by RJpinoyGQ1
i juss installed my aem cai and put the sensor in where it was spose too..the cel turned on so i disconnected my battery then put it back on. the cel disappeared for a day but came back. think its the sensor?

No you probably have a loose hose of teh sensor isn't seating flush and you have an intake leak thats trowing off the MAF caluculation. No matter how bad you over-oil you won't screw up the MAF in one day.

Griffin

[DavidYan]

like i said before im not saying that the airflow sensor being dirty isnt the problem to your rough running but im saying that overoiling is the number one cause and that unless you are sure its dirty dont touch the maf.

[Griffin]

Yeah thats absolutely correct - over-oiling is a huge problem - and all I'm saying is that most people over-oil them. People just don't seem to get how very little oil you are supposed to use - they thing you have to saturate it, or so it seems.

Griffin

[oo_snoopy]

thanks

[CjayfromSD]

you guys talk about over oiling, but how but no oiling? when i installed my aem cai, i thought the filter was ready to pop in. No CEL for about 300 miles. Then the first one happend, checked, and found a loose hose and clamped it. days later, the CEL poped up agian. This time i read the forums and figured to clean my MAFS. 350 miles later cel came on again? WTF ! Then i put some weathering seal around the O ring of the MAFS, 200 miles later CEL. Now im thinking there was no oil in the K&N filter in the first place, and dirt keeps building up on the sensor. Has anyone ever had this experience

[RJpinoyGQ1]

filter should of came oiled when you bought it.

this may be off the subject, but does ur aem cai make a sort of "bog" noise when you gun it? kinda sounds like when your coming up to a stop sign and didnt downshift and tried to power your way out of it.

if neones aem cai does, let me kno. wanna find out if this is normal. AEM said it was. ppl on here say that they only hear the air comin in and no plastic rattling bog noise at all.

[NOF555]

yes that is common if your talking about a half a second worth of noise due to the sudden vaccum.

[shadytunerGTS]

Holy Sh!t, answering back to people that are no longer here. It's like talking to a ghost. 6 year old thread back from the dead.

[FITGT]

Holy Sh!t, answering back to people that are no longer here. It's like talking to a ghost. 6 year old thread back from the dead.

haha that is kinda creepy when you put it like that.

[2way]

http://www.forumspile.com/Thread-Crap-Wont_Die.jpg

[shadytunerGTS]

That $hit's funny right there. Gotta good laugh out of that.