Your car has at least 2 o2 sensors

来源: iammadaboutu 于 2010-09-09 13:17:55 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (199 bytes)

There is one right under the hood and there is one on that pipe.
The one right under the hood normally dies first( on my cars any way).

For $400, He probably did not change your sensor..

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