o2 raplacement [Archive] - Bimmerfest - BMW Forums

: o2 raplacement

10-22-2009, 04:21 AM
Hi all.. been a while as I have been working on my bimmer. Replaced the voltage regulator and decided to replace my o2 sensor to get engine light off as well as to help it run smooth again. Anyway. removed exhaust and o2 sensor, but cannot get new sensor threaded in. Is there something I need to do. Threads seem to bite but after touching wrench to sensor it just pops off. I had to heat up the bung that it went into to remove the old one. THinking I might have to run a thread chaser but have never messed with this b4.
Thanks in advance...

10-22-2009, 05:45 AM
Make sure that the chase is the correct size and use cutting fluid. Be very careful that it goes in straight. Cross threading a chase or Tap is Bad Mkay...

10-22-2009, 10:23 AM
cool thanks...anyone knw the size per chance.....