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Knocking from nearside rear

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  • 25th January 2020 at 5:12 pm #12627
    stewart-bailey
    Participant

    Hi everyone,

    I’ve just picked up my GranCabrioS (2011) a couple of days back and am excited about this, my very first Maserati!

    It’s beautiful.  However, there’s a knocking from the rear left when I go over speed bumps and the like.  At first it was a “twang” and now it’s a simple knock.  I’ve read a little bit that suggests it could be bushes, loose luggage strap, loose strap around the battery etc. but I thought I’d join “The Club” and ask the experts.

    Thanks in advance!

    Stewart

     

     

     

    25th January 2020 at 9:17 pm #12638
    profchristopher-green
    Participant

    Knocking noises at the rear generally are:-

    Rear suspension bushes
    Suspension assembly and spring out of mount
    Top mount damage / Broken bump stop

    Battery coming loose in the boot floor

    I would say from the above places suggested by Graham any can look and see  and shouldn’t take more than 30 mins to have a peep.

    As an aside I had noises coming form the rear of my old GT from day one new for 5 years and it was checked over and over under warranty and after- there was never actually anything found wrong and it never failed me — even on track.

     

    28th January 2020 at 2:45 am #12661
    geraint-whitley
    Participant

    I have a 2008 GranTurismo with the exact same issue. I have been ‘living’ with it for 4 years now without any real concern, but I don’t drive the car hard at all. It fluctuates from twang to knock and back again.

    I would guess it is somehow caused by the spring releasing quickly under load – twang is certainly the best description.

    28th January 2020 at 8:35 am #12662
    profchristopher-green
    Participant

    Agreed !

    I had a QP5 GTS as well for 7 years from 2011-2018 and this had conventional fixed rate springs and under rapid load change the rear suspension springs  “twanged “ exactly as you mentions. The master mechanic at Lovetts who had been there a serious number of years just said it was the spring moving e.g. road sleeping police bumps taken fast, even weight transfer across the car in certain dynamic situations and not to worry about it.

    So I didn’t and never had a problem with this car either.

    28th January 2020 at 8:56 am #12663
    stewart-bailey
    Participant

    Thank you for all the feedback guys.   I really don’t want to have to “live with it” as it spoils a fabulous cabin experience not to mention my darling wife saying “there it is again” at every opportunity now 😉

    I have the car booked in at Emblem, Supercar Show Room and probably heading off to McGrath’s in Hitchin for a full 3 hr inspection …..just in case anything else is lurking around on the car.

     

    23rd March 2020 at 4:31 pm #13026
    stewart-bailey
    Participant

    Hi All,

    McGrath’s sorted it!  Swapped the two shocks over,  greased / lube the top bushes and all is now quiet.  What a relief!

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