i got a 99 nissan maxima and the cel is on for all 4 o2 sensors now i ordered the sensors and the two front was right and they two rear was wrong cuz the wires was to short now is there a difference cuz wen i keep callin the parts store they dont know what to do so if i order a 2000 rear o2 sensor would it b the same and also i keep gettin the egr valve code should i just replace it or wats the best way to get rid of it i live in new york so i got 30 days to get the codes fixed for an inspection

 

holy long sentence. punctuation my friend. effective communication is the key to success in life...

i dont know how to help you, although i lived in new york for 19 years and the inspections sucked.

i am a newbie and i am telling you to:

1. effectively communicate by using proper punctuation in your post
2. be more specific with your thread title. jeese. general help is about as vague as it gets.

 

I thought there was only 3 O2 sensors. Go to partsamerica.com and enter your car and search for O2 sensors and it'll show you what you need.