Hey P-51,
Sorry to hear about your problems with your car. But, you're definitely not alone. You've picked one of the best forums to ask for help. Many of us here have gone through and/or are currently going through very similar issues. But, I do have to say that your current issues, as you have written them down, are all DIY projects (not sure about your alarm issue, but all the others are definitely DIY as long as you are mechanically inclined (even just a little bit) and willing to take it all in stride).
I was pretty scared to touch my car at first, but learned to respect it even more after I took the time to learn to take care of the issues myself. For the issues that I couldn't get done on my own, I made sure I had an experienced Porsche mechanic on hand when I needed his help. It can get pricey, but if you ask on the forum, you can find very good deals just by word of mouth.
Here are some links that might be helpful:
1)
O2 sensors replacement: Requests for DIY Project Guide and Mike Focke's website below
2)
AOS replacement: http://mike.focke.googlepages.com/airoilseparatorreplacement
3)
MAF: http://mike.focke.googlepages.com/checkenginelightcausedbymassairflowsensor
4)
Alarm Issue link: http://986forum.com/forums/search.php?searchid=403312
5) Definitely invest in a
Bentley Manual (Porsche Boxster Service Manual) for your ride ($100 or less - check flea bay and/or I think one of the guys (nickg) on the forum was selling his book):
might be selling my car so have extras to sell) and/or download a complete service manual from one of Mike's Focke's links.
6)
An experienced Porsche mechanic: Find your local mechanic/porsche specialist
Good luck and let us know how it goes!
