Hey cmccloud,
Looks like you posted twice...anyway, could you put up the codes for us so that some of the folks out there might be able to help??
When I changed out all four of my O2 sensors (1999 boxster), I had the same issue, but did not disconnect / reconnect the battery. I cleared the CEL and after a few minutes of rough idling, my car was fine. I suspect, that maybe you need to check the connectors of each of the sensors. Perhaps one or a few of them may not be connected completely or one or a few of them may be installed backwards.
Also, which O2 sensors did you purchase?? If you purchased the sensors where you had to solder one on....IMHO, it might be where you need to start troubleshooting.
Good luck and keep us posted!
BTW, here's a link of my DIY O2 sensor install:
http://986forum.com/forums/showthre...85052#post85052
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