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Dirty Dirty MAF sensor - anybody here ever try cleaning one?

A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Dirty Dirty MAF sensor - anybody here ever try cleaning one?

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Old

Sep 25, 2007 | 09:52 PM

#1

einsgruber

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Dirty Dirty MAF sensor - anybody here ever try cleaning one?

I have read that brake cleaner should work - I'd like to have somebody that has cleaned theirs tell me what they used, if it worked etc. I don't really want to start messing with it until I know.

Reason: Check engine light comes on, vacuum hoses all seem good... dirty MAF has been listed as a possibility for the error code, and I have a K&N filter.

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Old

Sep 25, 2007 | 09:56 PM

#2

Im@wesome~ out!

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pull it out, soak it in rubbing alcohol/isopropyl

remove your K&N go back to the paper filter.. the MAF sensor gets soaked in that oil and gets fvcked over...

if you under oil it, you aren't getting enough protection.. if you over oil it

well... you get the whole maf sensor issue.
I just cleaned mine with isopropyl by soaking the maf in a zip lock bag full of it

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Old

Sep 25, 2007 | 10:44 PM

#3

Mr Dobey

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Or CRC MAF Cleaner

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Old

Sep 26, 2007 | 12:10 AM

#4

einsgruber

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Thanks... I was warned about K&N for this car; I ignored the advice of course. back to papr i go

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Old

Sep 26, 2007 | 04:21 AM

#5

Allroady DungBeetle

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CRC MAF cleaner works very well.

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Old

Sep 26, 2007 | 04:58 AM

#6

A400

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K&N's work fine if not over-oiled. Ran them 4 yrs on my URS4 w/no MAF problems

So they can work fine if oiled per instructions.
Rod

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Old

Sep 26, 2007 | 05:48 AM

#7

~~ModifiedA4~~

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wrong. your URS4 does not have the same type of maf.

there is a huge difference between a hot film maf and a hot wire maf.

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Old

Sep 26, 2007 | 08:05 AM

#8

A400

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I dont run a MAF on the A4, so you may be correct, dont know and dont care.

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Old

Sep 26, 2007 | 09:06 AM

#9

einsgruber

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The K&N was new, so...

I haven't oiled it myself yet. I don't know if a dirty MAF sensor is even the problem... just troubleshooting at this point.

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Old

Sep 26, 2007 | 03:39 PM

#10

boostorbust

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cleaning is a temp repair, just replace it your better of

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04, 1996, 2001, 27t, a4, airflow, audi, cleaning, cooper, dirty, maf, mass, mini, quattro, sensor

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