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dirty MAF diagnosis dirty MAF diagnosis
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Out-of-Production Cars & Vans General discussion forum for out-of-production Toyota, Scion and Lexus cars, and vans.

This is a discussion thread titled "dirty MAF diagnosis", within the Out-of-Production Cars & Vans forum, part of the Cars & Vans Forums category.

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Old 03-18-2008, 10:02 AM
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Default dirty MAF diagnosis
Can the MAF sensor be probed with a multimeter somehow to determine if it is dirty?

Or should MAF cleaning just be one of those every 30K miles or so tune-up related things to do?
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Old 03-18-2008, 09:43 PM
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Default Re: dirty MAF diagnosis
It probably wouldn't hurt to just pull and check. If it's dirty, then clean. Of course...it all depends on the environmental conditions yer vehicle is running in.

I think the newer types of MAF sensors (wire or film) use a heated element. The thermistor reads the amount of temp change from air flowing (cooling) and that is one of the baselines that the computer uses to compute airflow... So I don't believe that you can just take a static meter reading and see if it's working properly...
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