how many oxygen sensor in 1993 nissan 240sx
I had 1993 Nissan 240SX, my smog check was failed
Do I need to replace a new oxygen sensor and or new EGR ?
Any one in this chat room, please give me some advise ?
thank you very much
You need to scan for the codes first, can I assume the CEL is on? Any local auto parts store will scan it for you for free. Post the 4 digit code back here and we can help further. No sense in replacing parts you don't have to.
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