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Thread: rear knocking sound

  
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    abbawoh's Avatar
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    Question rear knocking sound

    Hello I am new to Astras and have just bought a Y plate 1.6 club. Been MOT'd with new springs fitted to the rear. past couple of days I have noticed a knocking sound from the back when going over speed bumps checked it over but cannot see anything obvious. There was no advisory notice given when it was MOT;d. Any ideas?

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    woody252506's Avatar
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    Probably the shocks mate.

    My old coupe was the same, new rear shocks to both sides solved it (When 1 needs replacing it is recommended to do both, same with coil springs).

    My newer coupe is starting to do the same now, and is on the same mileage as the old one when that started doing it (88k)


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    haughan's Avatar
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    yeh shocks mate see if theres any play in them if so replace them

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    Mine does this, thought it was a serious prob, but it turned out was the exhaust bouncing off the bumper

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    Chris_08's Avatar
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    As dcy said, check the exhaust. Give it a tug and see if it moves. If not, it's 99.9% certain to be a knackered shock. Pretty easy to do yourself, if you're not confident though a garage shouldn't charge much to do it. Just two bolts!

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    Vambo's Avatar
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    I have 54 plate SXI 1400 had the knocking coming from back end, is it from tailgate area low down? i replaced bump stops on tailgate which made no difference then read on this forum to wrap insulating tape around the locking bar where the tailgate joins body, hey presto no knocking!!

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