Well job complete... pheewwww I didn't think she'd ever start again lol... I still have the P0171 though any suggestions??? I originally had both 174 & 171... the only other thing I could think of would be a new Mass Air sensor... I replace both O2 sensors pre cat ... but not post...since it's only lean on one side I'm thinking of swaping the pre cat O2's...see if it switches banks before I put the MAF on order...