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I'd carefully remove and clean the MAF first. Check the online videos for the procedure. Note that the connector clip(s) securing the harness are different between the early and late MAF. Yours is the late style and has one clip on the wide side of the plug. Some videos show the early style with 2 clips on the narrow sides. Do NOT follow the advice on one video to use a screwdriver to release the clip, you can break it. Instead, push down firmly on the connector to fully seat it, while pressing the release button and then pull up while continuing to hold the button in.
The whole removal and reinstall process is relatively easy, but you need a security T20 Torx bit to remove the screws. Harbor Freight has a set for $10, but if you buy it in the store, check the security bits to verify the hole is centered in the bit. I checked a half dozen, and all had some off-center holes, but in each set, it was on different bits. I made certain the T20 hole was centered on the set I bought. Also, I just got a Bosch MAF for under $200 delivered from one of the usual sources.
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