Quote:
Originally Posted by Phil
If it has two o2 sensors, the second one monitors the performance of the cat, the front one before cat hasn't a clue what the cat is up to, only the rear one can know that.
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Just looked again and it seems it does have 2, doh. The one I replaced was thrown too. I need to get the car up and look again.
When I unplug the one I fitted it makes no difference to the lumpy idle either and as I said the fault code returns reallt quickly.