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Old June 16th, 2019, 12:21   #1
GlowBugTDI's Avatar
Join Date: Jul 2018
Location: Cambridge, MN
Fuel Economy: 43 mpg average
Default MAF or n75 valve??

Hi all,

the other day I lost boost in my beetle, this is the second time it has done this in a month. that actuator is fine. i fiddled with the n75 valve and i can blow and vacuum air both ways through the black spout on the lower right side. is that normal? somewhere i had read that means it's bad or something... either way i couldn't get boost back. so i tried unplugging the maf. i drove it out the driveway and boost it works!! drove it half a mile, plugged the maf back in, and now it drives great. is my maf going out? a bad connection? this is the second time it has happened to me (both in the past month). last time I turned the car off, restarted and it was fine. Did that a couple different times actually, but it had been fine for the last two weeks until yesterday.

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