Re: How often do you clean the MAF? Please - Bulletin Board

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Re: How often do you clean the MAF? Please
Posted by Mark in Marine [Email] (#1837) [Profile/Gallery] (more from Mark in Marine) on Tue, 12 Jun 2018 20:50:39

In Reply to: Re: How often do you clean the MAF? Please, cheaptech [Profile/Gallery] , Tue, 12 Jun 2018 13:51:36
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I mostly only clean MAF's when there are symptoms or I am doing a thorough preventive campaign on a car new to me.

I got a "deal" about 3 years back on OEM 9-5 MAF's while I was doing initial catch-up maintenance on my daughters' two 9-5 wagons. One of those cars seemed to have some issues that pointed to MAF, so I bought two new MAF's. I installed one in each car mostly to know it was not the problem. The issue on the questionable car eventually became identifiable as the fuel pump. I have cleaned those MAF's once each since then - so about once in 1.5 years. I have done similar maintenance interval on my BMW MAF, but with a lot more miles per year. Our Honda Odyssey van has never had the MAF touched in 135K miles, though I did clean the TB at about 100K.

If you don't use an oiled air filter your MAF can go a surprisingly long while and not get too dirty. By the way, a data logging OBDII tool (OBD Fusion for cell phone plus a WiFi or blue tooth adapter) can help you baseline the MAF performance. You can compare before / after cleaning, and you might get some sense of whether it is under-reporting the air intake.

Happy cleaning !

Mark in Marine

->Posting last edited on Tue, 12 Jun 2018 20:51:46.
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