What happens if I disconnect the lamda-sensor? - Renault Forums :: Independent Renault forum

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post #1 of 2 (permalink) Old 28th October 2009 Thread Starter
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What happens if I disconnect the lamda-sensor?

The reason for my question is that I found out when my car was at its EU-control, that the values for exhaust was of the chart, but after giving it som throttle it slowly went down.

And I have irregular idling and more important a el. warning with limp-mode reaction. So I was thinking maybe a defect lamda-sensor could cause this error?

And would it be better or worse if I disconnected the sensor for a test?
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What happens if I disconnect the lamda-sensor? Electronics madnoel10 1 1727 28th October 2009 09:11 PM
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post #2 of 2 (permalink) Old 28th October 2009
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One or more misfiring cylinders will cause unburnt fuel to enter the exhaust thus the Lambda sensor will give erroneous readings. My first impression was that you had one or more duff ignition coils - a very common problem on Renaults.
Have you checked the colour of the spark plugs for instance??
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