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- Posts: 239
- Joined: Fri Jan 03, 2014 3:43 pm
- Location: Estonia
Are you sure your lead is ok and conected to good ground? Seems like ground issue.
- Posts: 5
- Joined: Wed Apr 28, 2010 6:33 am
judging by the time scale that trace is mains interference for sure 50-60 Hz . its definitely not an O2 sensor signal