I'm not sure what to recommend about the swirl control valve. As I understand, it's a valve in the manifold. Description sounds like it might be a vaccuum problem?
1166 is the bank 2 #2 oxygen sensor, as you said already.It's not uncommon for oxygen sensors to fail at once in these cars.
gumbyandpokie999 wrote:car gets 38.6 MPG.
Wait...Now I'm confused...