jimmy57: I totally misread what you said then, sorry about that. I would like to check anything I can myself before I decide i'm done with it and take it to a shop. What do you mean by "if it is out of phase"?

JRL : Had the oil changed and even a cleaner run through it the day after I got the car (1/5/11). It came out as clean as new oil from a container.
From what I was told, the codes were there prior to the car sitting.
Regular Unleaded Gasoline, got the car on 1/4/11 and have driven it on highway and ...

2000 S70 SE with roughly 168,000 miles.
Most recent repair (1/4/11) was a rebuilt transmission through AAMCO after sitting for about 8-12 months.
Lights on: Check Engine and ABS (Service comes on, then goes away after starting)
Codes showing: P0327, P0500, P1671
I got the codes from an Auto Zone ...

Just acquired on 1/4/11 with some Panther 18's on it... not sure what style because I can't find it!