MelC,
Congratulations on the purcahse and welcome to CEG. You are correct in saying that it is tight under the hood. You took the first steps though to sucessful DIY repair by getting a repair manual, having tools, and finding this forum. I suggest just opening the hood and looking around for a while, just to get used to where everything is first. This way when you are viewing posts on this site, you can visualize what is being said. Also check out the following link off the main page. It has lots of common issues and How To's.
How To Section You mentioned your O2 sensor. This car has 4 of them. The trickiest one to replace to Bank 1 Upstream. Read over the How To to make sure you have all the necessary tools and info first. You will soon learn that in order to do repairs on this car, you will need lots of extenstions and swivels and you will need to take a lot apart to fix minor things.
Upstream Bank 1 O2 Anyway, I am sure others with chime in to help you out too. I just wanted to say Welcome once again and best of luck with the car.
