So I bought this 2002 Boxster S about 4 months ago now. It developed an idle hunt and CEL about a month and a half after I bought it.
Originally I didn't mind, until it slowly got worse.
The idle hunt got extremely consistent so I finally decided it was time to fix it.
I do work for a specialized German Shop and therefor have great access to tools and parts!
I first checked the codes. The only one was:
P0102- Mass or Volume Air Flow Circuit, Low Input.
My other scan tool read the same code as "Hot Film MAF Sensor"... No idea wtf that means...
However; I proceeded to smoke test the intake, coming up with a leaking oil filler tube. Replaced that and seemed to remedy the problem for a day. When the idle hunt returned the next morning, I smoke tested it again, and found no more leaks.
Through the last few months I've smoke tested the intake a total of 4 times after fixing the leak, hoping another leak would develop which it never has.
I have also:
-Replaced the MAF sensor with an new OEM Unit
-Mapped all the Oxygen Sensors which map out perfectly.
-Replaced Spark Plugs (Due to mileage and desperation lol)
Maybe some one else has found this problem? Help
