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Its also possible that you have an intermittent open, fault to ground or + with the MAF or throttle body sensors.
I'm pretty sure it would be indicated in the MAF codes.
What codes are you getting?
You did not mention the year and model as some have an idle sensor in the throttle body that can go bad as well.
I had the odd occurance of a paper part sticker pieces flying around in my intake box behind the filter which was creating havoc with turbulence and particles upstream of the MAF. I seem to recal there was a screen in front of the MAF that had some sticker material caught on it.
If the MAF is not in clear clean air it will be nothing but problems.
I blew out the airbox and cleaned the MAF and MAF connector with CRC MAF cleaner and then all was well.
If you clean the MAF with other cleaners (Carb Cleaner) or compressed air you may damage it and it will not work right again.
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"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
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