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Knocking from somewhere on drivetrain

  • 20-07-2018 11:50AM
    #1
    Registered Users, Registered Users 2 Posts: 134 ✭✭


    I have a Vectra C (05 model) that has suddenly developed a new knocking sound from somewhere in the drivetrain. It knocks faster as I drive faster. At lower speeds it is worst when there is no tension on the drive shaft, lets a clunk as soon as I lift off the accelerator then will be knocking under engine braking / coasting. It's definitely not the anti rollbar links or top mounts as I've had those issues before and it is happening on perfectly smooth roads.
    I'm not ruling out CV joints but it occurs regardless of straights or cornering and it also cropped up all of a sudden, which is not what I've seen before with them wearing out.


    I'm going to jack it up this evening to have a shake around of parts but any suggestions of what should be checked?


    Thanks


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