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  1. Alfa 159 1.9 jtdm purring noise when revs drop

    Alfa 159, Brera & 946 Spider
    Hi everyone. I have just recently noticed with my 159 1.9 lusso that when the revs drop to around 1000rpm there is a splutter noise. I can hear it whilst driving in between gear changes. It isn't affecting the performance of the car at all its just annoying and I'm tuned into it now. Any...