Found this on Youtube, simple testing method very good guide using live data on a scanner to confirm lean and rich conditions are being performed by the sensor by forcing them into rich and lean conditions.
https://www.youtube.com/watch?v=tCOy23cj-ic
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Testing Oxygen Sensors
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colb
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Testing Oxygen Sensors
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1999 1.8 Z3
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If the forum helped you, why not help the forum back. Thats the Z4 way!
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patriot66
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Testing Oxygen Sensors
That's excellent ....but I would've washed my hands before licking my finger 
....but I would've washed my hands before licking my finger Sterling Grey '03 2.5i SE / Infinitas Supercharger / S.M.G / Hardtop / Gloss Black 162s / Bilstein B4s / 3.0i Brakes / DLV De-Cat & Silencer / Rebuilt VANOS / Sonar 2Xcite Lights / Carbon & Alcantara Trim / M-Sport Seats / ...& Side Covers !
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bigwinn
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Testing Oxygen Sensors
That makes you posh…
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enuff_zed
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Testing Oxygen Sensors
Not the greatest chat up line if I'm honest.
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Always happy to help if I can.
If the forum helped you, why not help the forum back. Thats the Z4 way!
Always happy to help if I can.
If the forum helped you, why not help the forum back. Thats the Z4 way!
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patriot66
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Testing Oxygen Sensors
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Zulu4
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Testing Oxygen Sensors
I was wondering how this is actually testing the sensor and not just sending a 0v or 1v signal to the ECU in order for it to then adjust the fuel trim to min or max. Surely the only way to test an oxygen sensor is to vary the oxygen content and see what it does.
I read some of the youtube comments and others are wondering this too.
Is he actually testing the sensor or is he confused (like me) ? One of us is having a Joe Biden moment.
I read some of the youtube comments and others are wondering this too.
Is he actually testing the sensor or is he confused (like me) ? One of us is having a Joe Biden moment.
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