O2 sensor problem....

[Jeanluc]

I have to replace my oxygen sensor 2 time in two months.....
The last one failed after 400 miles !!!

I used a 3 leads sensor with Hooker headers (a one lead sensor do not run in "closed loop" )

What could be the cause to this problem???

JeanLuc

[vetteboy86]

I guess my first question is how do you know the sensor itself is bad. I assume you are using a heated O2 sensor?

[tigmaned]

hope fully others guys with header will get in this, but i think you may have to move it away from the headers.

[Jeanluc]

When my problem appear, I test all sensors: all are ok.
When I disconnect the wrong O2 sensor, engine run again well.(no miss)
So, I have replace it: engine run very well for 400 miles....and same problem is back!!!
I think effectively the sensor is to close the header (on the header reducer).
I'm going to move it with my new sensor.

What is the good distance from header??

(??? ???I do not understand why a standart sensor do not run on the same place (too cold???)???(no closed loop) and why a 3 lead "burn" because is to close!!!!

JeanLuc

[UB2 SLOW]

I keep getting the same problem with my headers.