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Diagnosing possible rear suspension issues

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    Diagnosing possible rear suspension issues

    I'm suspicious that my subframe bushings and/or trailing arm bushings are worn, but I don't experience the "thumping" sound many describe, nor does the rear feel loose at all. I hear what I'd describe as a metallic "clanking" sound when going over some medium-sized and larger bumps. Doesn't seem to happen as much at highway speed unless I hit a "repaired" area of lumpy asphalt in a concrete road surface. I also hear a slight thump from the rear when I push the clutch pedal and feel a little shake....signs of a bad diff mount? I recently replaced transmission mounts and CSB, and flex disc. These aren't parts I've ever had to replace before on any car I've owned, so I'm not 100% sure of what to look for.

    #2
    Did you mark the drive shaft when you took it apart, and put it back the same way?

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      #3
      Yeah, driveshaft is perfectly balanced, no driveline vibrations. Just funny sounds from the back.

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        #4
        clanking sound over bumps - check your rear springs and rear shock mounts

        thump from rear when engaging clutch - double check all the nuts/bolts on both ends of the driveshaft and the CSB bolts.

        sorry, that's the best i can do. hope you get it worked out.
        sigpic

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          #5
          The shock mounts are new, but I suspected them anyways for a while, then checked them. They're nice and tight still. Springs/pads are good too.

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            #6
            Check the bolts holding the diff to the subframe....the ones on top.

            I had the same clunk with the clutch engagement, and mine was the driveshaft ujoints.
            Originally posted by codyep3
            I hope to Christ you have looks going for you, because you sure as fuck don't have any intelligence.
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            2007 Z4m coupe. Silver grey/black/ aluminum. 1of50
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