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Clean MAF

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Old 07-31-2014, 06:52 PM
  #1
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Default Clean MAF

2003 Audi A4 1.8T Quattro
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Hey guys I'm trying to see if anybody has a walk thru on how to clean my MAF. Car is running a little rough at idle and since I've never cleaned this, i figured it might be a good start.

Ive done all the searches and I've gotten back some results but it seems all the pictures have broken links on the walkthrus i have found. I need to see if anybody can help me with a DIY but with pictures. Any help would be appreciated guys. Thanks again.
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Old 08-01-2014, 08:07 AM
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Youtube has a bunch of videos on cleaning MAF.....safest Bet....remove the MAF from the turbo inlet pipe....Blast it with the cleaner (10 sprays what CRC brand I think states)...air dry a few minutes and reinstall.......
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Old 08-01-2014, 09:38 AM
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Tried youtube but no such Luck?
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Old 08-01-2014, 01:08 PM
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Hi,

Here is a link from Youtube on how to clean the MAF:

In case that doesn't fix your issue we do carry the original part.

Here is the link.
AutohausAZ - MAF



Disclaimer: Make sure to verify the year and model of the vehicle to insure
proper fitment.

Last edited by AutohausAZ-Mike; 08-01-2014 at 01:10 PM.
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Old 03-21-2015, 07:04 PM
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I just cleaned the MAF sensor in my 04 1.4t today. Before today, all 4 cylinders were misfiring. After cleaning, CEL went away and it was no longer idling rough on a cold start but I'm still getting one fault code. And CEL came back later in the day.

17519 - Oxygen (Lambda) Sensor Regulation: Bank 1
P1111 - 002 - System too Lean

This is the only engine fault code I'm getting now. The car idled fine when I disconnected the wire to the MAF so does that mean it's okay or needs to be replaced?
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Old 03-23-2015, 12:24 PM
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Originally Posted by carlito View Post
I just cleaned the MAF sensor in my 04 1.4t today. Before today, all 4 cylinders were misfiring. After cleaning, CEL went away and it was no longer idling rough on a cold start but I'm still getting one fault code. And CEL came back later in the day.

17519 - Oxygen (Lambda) Sensor Regulation: Bank 1
P1111 - 002 - System too Lean

This is the only engine fault code I'm getting now. The car idled fine when I disconnected the wire to the MAF so does that mean it's okay or needs to be replaced?
I have never cleaned a MAF and had any sucsess unless it was clearly contaminated from like an over oiled K&N filter. What really happened is the engine management has richened it up to compensate for the lean condition masking the issue. But it reaches a point where it turns the light on for the lean code if it adds enough extra fuel. You have an air leak, like breather parts under the intake manifold or behind the valve cover. Or the pcv valve has failed, or some other torn or cracked hose after the MAF sensor.
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