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checked and "cleaned" the MAF yesterday and it looked brand new. car is running top notch. go to start it this morning and minor hunt at idle again. last 3 cold starts were perfect, no hesitation or hunt at all.
half way to work, CEL comes back on (after 3 days of solid driving). Car is running great though.
so I guess my next step is to have the Air Change-over valve and the Electronic Change-over valve replaced.
I had read elsewhere that the Tiptronic models have an extra vacuum valve or something that can also go bad... since it requires taking the alternator out to replace these, I want to replace as much as possible all at once.
what can i expect to pay in labor? and should i replace the seconday air system hoses as well?
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