well i just picked up an ef.. and after driving it for 5 min the cel pops up andit seems to waste more gas then a d15 should waste.. i looked at the o2 sensor wire and its ripped.. so its not connected.. but the only lose wire i see is a single wire.. and im confused because on my old eg it was a 4 wire o2 sensor.. im new to the ef game so im wondering is it a single wire o2 sensor??
feelin like a noob on this ef lolz

 

efs have a 1 wire o2 sensor

 

ahh thank god i was startin to stress about it lolz
thanks for clearing that bro.!

 

ef is obd0 (1 wire) eg is obd1 (4wire)

 

yeeep replace that o2...lol

 

single wire And it's peach right?
anybody knows if it's better to run it to the top part of the header or the bottom by the cat?

 

stock it was near the top, so i'd go with that.

 

wait its peach?? mines yellow??

 

can anybody confirm where the main wire is coming from to see if i connected the rite wire lolz

 

The school of thought is that if you have an unheated oxygen sensor (one-wire), you will want it closes to the exhaust ports. If you have a heated oxygen sensor (4+ wires), you can stick it wherever you want to sample the exhaust stream.

 

o.O
peach or yellow 02 sensor on 1990 civic dx harness?

 

its yellow and its a 89 lx
it was the only wire i seen loose so i decided that was it lolz