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  1. 6-speed transmission "Clunk" sound

    Mustang EcoBoost Discussions
    I hear a "clunk", "thump", or "bump" like noise sometimes when I put the car in 1st gear. Does anyone else hear this? I've been to the dealership multiple times for this noise and the mechanics say that all ecoboost mustangs sound like this. They say they've had other customers come in...
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