My 1.4 106 automatic multi-point injection failed its MOT on emissions - it's used mainly for local journeys. The mechanic said he would clean the Lambda sensor and that I should take it for a high speed run which I did.
The next day it passed the emissions test and all was well for a few days until yesterday when it has started to cut out - it just dies a few yards from home but always starts again and idles ok. I set off again and the same thing happens again. Seems a bit better when it's warmed up but don't like to venture too far from base.
Could he have damaged the Lambda? Would this cause these symptoms? Just seems a bit of a coincidence that it should start playing up just after the work was done on it.
Any suggestions welcome.
Thanks.
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"Could he have damaged the sensor?" Yes.
Anyone who thinks that oxygen sensors need cleaning doesn't have a clue. They work at red heat, so if they ever foul up, then there is an external cause that should be addressed first. It sounds as though the test wasn't carried out at the correct cat temperature either.
Take your car to a competent garage for proper skilled diagnosis.
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