I have a 2011 Punto Evo and am getting mis-firing problems but not all the time, usually when pulling away. It can be fine for weeks/months then starts again which makes it difficult for mechanics to trace. My local garage thought it was the MAP sensor (whatever that is)! They have replaced it twice and I have also taken it to a Fiat garage where they have done a computer upgrade. Now it has started again. I can only liken it to the feeling of the car running out of petrol or like the old days, a faulty plug. Anyone got any ideas? Its driving me nuts!!!
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