In my last post I was dealing with codes P0172 & P0175 that tell us "system too rich bank 1 & 2"... Also, P0327: "knock combustion vibration sensor 'A' circuit low". zray and tropic cat made some diagnostic suggestions that worked out for me! I sprayed the knock sensor connectors with electronic contact cleaner and re-seated them I also cleaned the mass air flow sensor in the intake and found a very small cut in the piping which I sealed with silicone.
I put all back together and the car is running fantastic, idling best ever and so far NO codes or lights on the dash....knock on wood.
SOOOO very happy for and indebted to all the help provided by members of this forum. No way I could have done this fix without the resources available to everyone on this forum.
Thanks again

Ken Miller
2000 Xk8 convertible
Orange Beach, AL

 

Glad to hear you sorted it out. I have also found the members of this forum VERY helpful. Well worth the price of admission. Happy motoring.