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MAFs gone bad!

Old Sep 27, 2009 | 05:49 PM
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MAFs gone bad!

I have now had to change out 2 MAF sensors when going WOT, pedal to the metal, only to have both times "service required" main message and "check engine soon" lights come up. Code P0102. Changed out the MAF sensor, all is well both times!
My fuel pump relay is fine, I have a HKS drop in that I think may be the problem: have since ordered a Cosworth and am currently using the OEM paper filter.
Can my tune be an issue? Need to recheck with HBSpeed? Any thoughts as to whats up?
Thanks
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Old Sep 27, 2009 | 07:39 PM
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Originally Posted by navidf
I have now had to change out 2 MAF sensors when going WOT, pedal to the metal, only to have both times "service required" main message and "check engine soon" lights come up. Code P0102. Changed out the MAF sensor, all is well both times!
My fuel pump relay is fine, I have a HKS drop in that I think may be the problem: have since ordered a Cosworth and am currently using the OEM paper filter.
Can my tune be an issue? Need to recheck with HBSpeed? Any thoughts as to whats up?
Thanks
Wash the HKS drop in under warm water and let it dry....some of the filter ship with some kind of oil on it that can muck up the maf.
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Old Sep 27, 2009 | 07:55 PM
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I too also popped 2 MAF's and coincidentally was running the HKS SuperHybrid drop in as well. Just as the above poster stated I washed and dried the filter throughly and no more MAF failure. Did your dealership replace yours under warranty? Just curious...

Last edited by Codevo; Sep 27, 2009 at 08:00 PM.
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Old Sep 28, 2009 | 08:28 PM
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No
Can a tune mess up a MAF sensor?
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Old Sep 28, 2009 | 09:06 PM
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Hmm... been using the HKS filter for almost a year and no MAF issues.
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Old Sep 28, 2009 | 09:20 PM
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Originally Posted by finnns2000
Hmm... been using the HKS filter for almost a year and no MAF issues.
like i said some people have it some people don't
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Old Sep 29, 2009 | 02:19 PM
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I even bought the new 3 layer dry HKS to replace the old HKS and both sensors failed after that. However, it may not be the culprit. Again, can the tune cause this problem or is that not possible?
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Old Sep 29, 2009 | 02:23 PM
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I've know of another person that ran the HKS drop-in and had a MAF go bad too. Seems like too many cases to be a coincidence. How many people with a stock filter had a MAF go bad?
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Old Sep 29, 2009 | 02:39 PM
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I agree: too many cases for it to be a coincidence.
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Old Sep 29, 2009 | 06:19 PM
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Just run the stock filter and see if you get the p0102 code. If you do not get it, then it is the filter. If you do, then it is something else.
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Old Sep 29, 2009 | 06:52 PM
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Even with the HKS in, it was OK, except for all the way out WOT which I did twice leading to 2 MAFs going bad. I am afraid to try it with the OEM filter! But eventually I will do it and then we will see!
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Old Sep 29, 2009 | 09:02 PM
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is the hks an oil foam filter?
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Old Sep 29, 2009 | 09:20 PM
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Originally Posted by jondimellow
is the hks an oil foam filter?
no

but I believe there is some kind of, either manufacturing lubricant or something else getting onto the filters prior to them being sealed up at the factory.
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Old Sep 29, 2009 | 09:25 PM
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Maybe get a Perrin, Cosworth, or WORKS filter...
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Old Sep 29, 2009 | 10:14 PM
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I've had one go out and I also have the HKS drop in. Full throttle on 2nd gear to redline when it popped up. Mitsu covered and also replace the maf plug. I was in the impression that it was the plug that was the problem thats why they replaced it. I dont think its the tune the could mess it up. I have since been running the same tune. But now I wanna change my filter to a Perrin one maybe.
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