I failed smog because of lack of communication for my car's computer and my mechanic determined that everything was okay other than my ECM, so I bought a used one from a totalled Camry. My mechanic instructed my to find an ECM with the number 89666-33031. The one I bought on ebay which has the part number 89666-06120. The auction on ebay stated that it will work in one of four models, one of which appears to be mine: CAMRY 00, 4cyl, 5SFE engine w/o theft deterent, automatic trans, California emissions or whatever.

WHO is right?

Thanks for any help and advice.

Matt