I don't know, the CPS codes are very specific. While the CPS is often a failure item (and about the easiest to change) I kinda think there is something else wrong.

Just keep the "bad" CPS, 'cause if the CPS does not help, then it was not bad and you have a good spare! As I read the thread, I'm now thinking maybe it is the CPS.

Just don't know... But again, the CPS is a real simple, cheap item that is KNOWN to cause problems. My car is at 85,000 and I have had no problems, but I STILL carry a new BOSCH CPS in the trunk.