Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
Hi, Jeff, welcome to the forum.
I see a couple of possible issues.
First and most significantly, such things sold on fleabay are often rebranded Chinese knock-offs (or cleaned up used parts put in a new box). There is a big market for this, sponsored by the same folks who bring you $250 Rolex/Omega/etc. watches: looks good, works poorly. So it's possible that is what you have, not a genuine Bosch product for which your car was designed...penny wise and pound foolish as they used to say, but life lessons are there to be learned. Ebay is okay for insignificant things but for important parts, the best advice is to stick with a reputable seller, there are several on line. Your forum moderator and site admin, Germanstar.net is one, autohausaz.com is another. Folks on this forum swear by both.
Second, no problem with going to AutoZone to have them read codes, but most people here will suggest you don't let them diagnose the issue for you. Get the actual codes and search this site or google them. Numeric codes have to be translated, which is usually easy enough, but often you then have to interpret the translation which is the tough part of "diagnosis".
My guess on the limited information available is that in this case AutoZone correctly read, translated and interpreted the code(s), but you bought a fraudulent part on Ebay that worked a short while and then went out of range (or is causing something else to go out of range). Have the codes read again and see what's going on. My guess is your seller will be reluctant to work with you, so all I can do is wish you good luck. If I remember correctly mbnz320 in the W210 forum has a similar story, in the end he bought a MAF from a reputable source and his problems went away.
Take care and enjoy the ride,
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; its inherent virtue is the equal sharing of misery. (Winston Churchill)