I have a PLX Devices Air Fuel Ratio sensor unit connected to a DL1 as supplied by RTUSA. It had been working well for the last year but the last 2 races it appears to be 'drifting' . The free air voltage appears to be good - 2.35V but is showing an increasingly lean mixture on the track which does not agree with plug readings and power.
Is it possible to re-calibrate the unit? or compensate in the DL1? or just go for a new sensor? I would have thought the sensor should last longer than 10 race meetings though. Any other suggestions would be welcome.
Ray[/b]
PLX Devices Lamda drift
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- Posts: 10
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- Location: Auckland, New Zealand
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- Posts: 10
- Joined: Wed Jul 30, 2008 8:02 pm
- Location: Auckland, New Zealand
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- Posts: 10
- Joined: Wed Jul 30, 2008 8:02 pm
- Location: Auckland, New Zealand
I can give you some information...
1/ the way o2 sensors work is that they can only "really" directly sense no o2 in the stream, so exactly stiochometric, the rest is down to an approximate calibration - so the further rich or lean you get the higher the error.
2/ they do have a finite life time due to contaminants in the exhaust - after a few years of racing it might be worth getting a replacement sensor.
Thanks
Andy
1/ the way o2 sensors work is that they can only "really" directly sense no o2 in the stream, so exactly stiochometric, the rest is down to an approximate calibration - so the further rich or lean you get the higher the error.
2/ they do have a finite life time due to contaminants in the exhaust - after a few years of racing it might be worth getting a replacement sensor.
Thanks
Andy
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