Intake AFM horn- don't touch it!!!

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  • Sps
    Wrencher
    • Apr 2013
    • 265
    #16
    Originally posted by Madhatter
    no problems with my MAF either. If you are killing them I would be suggesting you look at how healthy your motor is. Aside from doing something stupid like trying to clean it, usually the other thing that kills them is if you have a lot of blow by and end up with plenty of oil vapour in your intake.
    To add to this, if you have a K&N style filter, the oil can damage the sensor also.


    ATTENTION:

    FOR THOSE WHO HAVE NOT DONE SO, PLEASE DO SO AT THIS TIME

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      • Hooffenstein HD
        Banned
        • Nov 2012
        • 1388
        #17
        Originally posted by Madhatter
        no problems with my MAF either. If you are killing them I would be suggesting you look at how healthy your motor is. Aside from doing something stupid like trying to clean it, usually the other thing that kills them is if you have a lot of blow by and end up with plenty of oil vapour in your intake.
        No blow by, fresh rebuilt like 3 months before I did the MAF swap and I'm not using an oiled filter. Also had an actual auto electrician solder up the wires as he just happened to be in my workshop at the right time.

        Could bad earths/grounds, or an inconsistent voltage from the alternator possibly kill them?

        I think I noticed some voltage issues the other day with fluctuating headlights at idle. This has only just started though, or only just become bad enough to cause fluctuating of headlight brightness. I did put a new voltage reg in the alternator at the same time I rebuilt the engine but I guess it's possible for new parts to be bad out of the box.

        Maybe I've just been incredibly unlucky and got a couple of MAF sensors from a bad batch.

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          • Klug
            E30 Modder
            • Sep 2011
            • 804
            #18
            I don't have a MAF in mine- but with other cars...if its flaky- its best bet to replace it rather than trying to fix it. (As long as the wiring worked correctly before)
            555Garage - Kingston, PA

            '13 BMW e70 X5 35d
            '95 BMW e34 525i
            '92 BMW e30 325i S52 Vert (Quade the Vert)
            '92 Range Rover Classic
            '90 Range Rover Classic
            '89 BMW e30 325i Coupe (The DIRTY30)
            '81 VW MK1 Rabbit Caddy Diesel
            '76 Honda CB550K Cafe/Brat
            '67 Pontiac LeMans
            '24 Model T Depot Hack
            ....And a bunch of Motobecane, Puch, Garelli, Batavus and Honda 49cc-78cc Mopeds...

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              • goldenbb
                Wrencher
                • Jun 2013
                • 208
                #19
                Originally posted by Sps
                To add to this, if you have a K&N style filter, the oil can damage the sensor also.
                Mine has the K&N also, an older one. Major delay if you blip the throttle up from idle. Stupid mods!

                I was thinking of doing a DIYPNP and then once I get it going, do the AFM delete and then there's room to get the filter angled down where the air is colder. Anyone have that setup?
                '90 zinno 325iS

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