Hello,

I know this has been hashed before on this site but I was wondering if anyone had any insight on what else could cause this slow sensor code.

I replaced my O2 Sensor last year, and the light has come back on.

I fear that I may have a vacuum leak somewhere, and I wonder if this could be causing the problem?

Also, I have read that the Pacesetter header that I have could be causing the problem with the 02 sensor bung. However, I recently had to have that section of the header replaced because the hanger/pipe had rotted out (Ohio Winters).

Before I buy a new sensor, I just wanted to pick everyone's brain and see if there is an underlying problem that is screaming for attention!

The strange part of it all is that the code had reset itself one day while driving a long distance on the highway...this is what truly puzzles me.

Thanks for your time!
Kevin