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MAF Sensor Cleaning DIY (N52)

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Old 05-09-2010, 11:44 PM
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Originally Posted by v_therussian
I would strongly recommend doing this even without the symptoms. You may actually not notice any symptoms until the sensor is beyond cleaning, so it is always good to keep it "clean". It is recommended to do this cleaning every time you change you air filter. Also, I'm beginning to think that having a less restrictive air filter + ram air scoop sort of contributes to the sensor getting dirty more often - at least in city conditions.

Not sure what products there are in Germany that are same as this cleaner here, but I'd guess there should definitely be something very similar at your local auto parts store

Allright, thanks.
Think I found the right stuff:
http://cgi.ebay.de/Sensor-Reiniger-Luftmassenmesser-LMM-4-48-100ml-/400087404833?cmd=ViewItem&pt=Autoteile_Zubeh%C3%B6r&hash=item5d27115121
Gonna go ahead and try it
Old 05-17-2010, 07:24 AM
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Originally Posted by protams
Attachment 104903
What you gonna do with power steering reservior? I know it`s common problem for all E60... :thumbsdown:
drape the end of a tube sock over it...
Old 05-17-2010, 08:04 PM
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I did it and I swear the car loves to rev higher and faster, and acceleration feels much better!
Old 05-17-2010, 08:31 PM
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can anyone tell me what size those torx screws are? I have a T-20 and a T-25 and neither worked..
Old 05-17-2010, 09:32 PM
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Originally Posted by xenonrider
can anyone tell me what size those torx screws are? I have a T-20 and a T-25 and neither worked..
Oy, I forgot - I was at my mechanic's when I was doing it, so I just used his tools LOL

Here's the part number for the torx screw: 13627531817

I cannot find the size anywhere for some reason though
Old 05-18-2010, 11:56 AM
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Do anyone know the location of MAF sensor for the N54 (twin turbo) engine?
Old 05-18-2010, 11:59 AM
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There should be a plug that goes into the side of your inlet pipe from your airbox towards the engine plenum. It is located in there. Should be easily accessible!
Old 05-18-2010, 01:41 PM
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I am planning on doing this. If I can't find the same MAF cleaner, is the WD40 ok?
Old 05-18-2010, 08:36 PM
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Originally Posted by Bteljuice
I am planning on doing this. If I can't find the same MAF cleaner, is the WD40 ok?
Not sure. I'd stay away from putting WD 40 on there though - just somehow it doesn't make sense to me. I may be wrong though.

I think the cleaner I used is alcohol-based and its definitely not oily or greasy. It dried very quickly, but it was NOT pressurized air can - there was some sort of liquid there. I'll try to look at the can and see if I can give you a rough idea of the ingredients.
Old 05-19-2010, 06:32 AM
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Originally Posted by v_therussian
Not sure. I'd stay away from putting WD 40 on there though - just somehow it doesn't make sense to me. I may be wrong though.

I think the cleaner I used is alcohol-based and its definitely not oily or greasy. It dried very quickly, but it was NOT pressurized air can - there was some sort of liquid there. I'll try to look at the can and see if I can give you a rough idea of the ingredients.
Thanks V for the quick reply. I just went to my local auto store and they don't have the MAF cleaner. The person in charge told me to use the "[img]file:///C:/Users/SARAHE%7E1/AppData/Local/Temp/moz-screenshot.png[/img][img]file:///C:/Users/SARAHE%7E1/AppData/Local/Temp/moz-screenshot-1.png[/img][img]file:///C:/Users/SARAHE%7E1/AppData/Local/Temp/moz-screenshot-2.png[/img]F1 injector/carburetor cleaner" as most of the mechanics here use it to clean the MAF. I am a bit hesitant on using it. Any advice?


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