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MAF sensor??

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Old Jan 6, 2012 | 06:39 PM
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Bshipe22's Avatar
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Default MAF sensor??

Can a MAF sensor be bad without throwing a code? I replaced all plugs and wires today. Unplugged IAC to test that and ran like crap so that works. Unplugged MAF and truck idled and ran great. Cleaned it with MAF cleaner and recharged my K&N while i had it torn apart. Plugged MAF back in and still idked like crap. Unplugged it again and waallaa it stopped idling rough again. In at a loss for ideas. Still have fuel filter to change but the idle is definitely attributed to the MAF being plugged in.
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Old Jan 6, 2012 | 06:49 PM
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The Mas Air Flow sensors to not take kindly to aftermarket filters that are over oiled.

There are at least 50 threads on the subject.

put a Wix filter in it, get some sensor cleaner, hope for the best.
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Old Jan 7, 2012 | 06:57 AM
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Originally Posted by Neggy
The Mas Air Flow sensors to not take kindly to aftermarket filters that are over oiled.

There are at least 50 threads on the subject.

put a Wix filter in it, get some sensor cleaner, hope for the best.
Maybe thats it. I ran the truck with cleaned MAF with filter out and it ran fine. After cleaning and re oiling the filter it ran rough again. Is it the filter you think? And why is KandN so highly recommended if it hurts your MAF?
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Old Jan 7, 2012 | 07:17 AM
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Filter simply lasts a long-long time. Take care of cleaning and coating it with the K&N treatment. Too much is a bad thing. The spary helps the filter do a better job. It's better to clean and treat it more often, every oil change, than to over treat it every 12,ooo miles. There are synthetic filters out there now. Airaid just for one. I'm not a big fan of CAI mods to simple everyday drivers. Better to just put a Magnaflo muffler on it. If you have trailer tow don't waiste you money on a lot of high dollar mods.

Last edited by papa tiger; Jan 7, 2012 at 07:23 AM.
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Old Jan 7, 2012 | 09:54 AM
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There's nothing wrong with a K&N filter. You just over oiled it. If it resulted in a change the second you put tin then you way over oiled it. Clean it and oil it just enough so that its an even pink color. Oil it lightly and allow it to sit for a half hour or so. The oil will travel throughout and the color will be fairly evenly dispersed. Maybe a few white areas that a small drop can be applied to and even out.
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Old Jan 7, 2012 | 02:02 PM
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Originally Posted by Blown Ford
There's nothing wrong with a K&N filter. You just over oiled it. If it resulted in a change the second you put tin then you way over oiled it. Clean it and oil it just enough so that its an even pink color. Oil it lightly and allow it to sit for a half hour or so. The oil will travel throughout and the color will be fairly evenly dispersed. Maybe a few white areas that a small drop can be applied to and even out.
ya i way over oiled it then. Ive never done it before so i put it on heavy to cover the entire filter pink. So pull the MAF again and clean it and clean the filter again?
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