How exactly do u do it? Iv heard there is a special procedure or something..
after replacing my 02 sensor my car runs much better but now idles too low(500rpm at lowest point).

 

I had the same problem with the idle...but what i did to make it better..is turn the screw up a little under where u rev the car in the engine..u need some small *** pliars and a screwdriver...if u want just email me or IM me if u need any help..later

 

check out this thread:

<a href="https://maxima.org/forums/showthread.phtml?threadid=9990">click</a>