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Old 02-22-2003, 01:52 PM   #1
KIMUTAKU
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Default Cleaning MAF sensor??

how often do i need to clean the MAF sensor???

does it require cleaning at all??

if so, how to do it??

thanks..
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Old 02-22-2003, 02:48 PM   #2
Turbo Tin Can
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I have no idea, but i know its crazy expensive! Dont touch it lol
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Old 02-22-2003, 02:53 PM   #3
SubaruWRC
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and bye bye Turtle :(

Default Re: Cleaning MAF sensor??

Quote:
Originally posted by KIMUTAKU
how often do i need to clean the MAF sensor???

does it require cleaning at all??

if so, how to do it??

thanks..


You can take some Brake or Carb cleaner and spray it off (not alot) and or take a small brush and go a cross the wire. ( dont be rough, be very gentle). I dont know of any time frame you should clean it in but i guess you can do it as part of regular maintence.

Hope i helped

Jiffy
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Old 02-22-2003, 02:53 PM   #4
ATXImpreza
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Default MAF Sensors...

dont really need often cleaning unless you are driving in a dusty, dirty place everyday, or if you suck up some oil from a K&N filter or some odd reason. But if you need to clean it it is best to not touch it with your bare hands. Get a cotton swab and some rubbing, not drinking, alcohol, and just swab it a few times...
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Old 02-22-2003, 03:35 PM   #5
PaulRex
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Default

Hey, I just cleaned my MAF sensor two days ago, against the recommendation on most people on the board Anyway, I didn't want to spray anything on it even though I know there are sprays that are ok to use with electrical equipement. All I did was take an few Q-tips and GENTLY brush the filiment to get the grime off it.

I have been using an K&N airfilter for over 25k miles with 39k miles on my car alltogether, and I guess the oil has made the filament capture some of the dirt and dust pretty easily.

Now it's clean(the side of the filament facing the airflow was black!), and my car is running great(it wasn't running bad beforehand though).

My advice if you decide to do this, is take your time, make sure not to bend the filament, and touch it lightly.
Paul
edit: Don't forget to disconnect the neg. battery terminal.

edit:edit: To answer your other question the MAF sensor does not need frequent cleaning, or cleaning at all IMO. I only cleaned mine because I saw it was dirty.. If yours is clean or working ok then don't touch it.
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Old 02-22-2003, 03:42 PM   #6
illmatic
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What are the symptoms of having a dirty Maf sensor? I had an injen for about 7k miles and a K&N for about 2k miles.
Jay
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Old 02-22-2003, 10:58 PM   #7
sc00by71
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Symptoms of a dirty MAF may include CEL indicating fuel trim code. In other words the wire is coated and is not feeding an accurate estimate of actual airflow to the ECM,throwing air fuel ratio out of balance from target. Some driveability may be noticeable. I usually pull the MAF out of the cleaner housing and give it a shot of carb or brake clean like was mentioned before. I let it air dry, do not blow air from a compressor on it! How often to clean ? Depends on driving conditions and how much you oiled your filter last time ;p . Most dirty MAF's I see here in Montana are between 40-70K mileage. If you are doing a major svc i.e. 30,60,90K would be a good time to check it as you should be checking,changing air filter anyway.
Sorry to ramble Hope someone finds this informative.
Shawn



edit: bad spelling
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Old 02-22-2003, 11:48 PM   #8
KIMUTAKU
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Default

thanks for all the info!

my car only has 10000km on it...so i guess i should just leave it alone..

i have the blitz LM intake on my car for 2000km...is the blitz filter oily???
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Old 02-23-2003, 12:57 PM   #9
RacerX
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WR Blue Pearl

Default cleaning MAF

I did this several times on my '99 RS. I used something called QD Electronics Cleaner or something like that. I think it is mostly Xylene. I just took out the MAF and sprayed it pretty liberally with the stuff. I had an Amsoil foam panel filter and I wanted to make sure any oil or grime was removed from the MAF. The first time I did it the cleaning made a big difference--my mileage improved and it idled a little smoother. I drove on a lot of dirt roads so I think this is something to do x1 a year or so. Haven't done it on my WRX yet, but I will probably do it at the end of the Summer.
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Old 02-23-2003, 02:13 PM   #10
KIMUTAKU
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the old gen RS uses a different type of MAF sensor...the wrx's one is made by Denso...it's alot more durable...

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Old 12-21-2004, 09:22 PM   #11
wrxtasy555
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Regarding the cleaning what should I see afterwards? what I mean is that when I look in there now (assuming its dirty) I see the two wires coming across with what looks like tubes covering the wire in the middle. what should see after its clean? I don't want whatever that covering is to be taken off my the cleaner.
Todd
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Old 01-19-2005, 03:21 PM   #12
raglan
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is it possible to get lowered boost levels if the maf sensor isnt clean? for some reason im experiencing lowered boost pressures, on the gauge it usually registers around 12psi but is only going up to 7psi on the gauge.
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