update on w210 e320 cdi estate rear suspention noise

[doggz1]

Well guys just been on a 200 mile round trip to the place i bought this car from 5 weeks ago and so far , after 2 previous trips they have replaced a new high presure diesel pump, brakelight switch, both rear subframe bushes, headrest motor, thermostat, 2 small fuel pipes, kickdown switch, throttle position switch, they have been quite fair with me . BUT they still have not cured this medium strength metalic sounding knocking from the rear passenger wishbone area all the bushes to anti rollbar etc seem tight on the leaver pry bar testing . Now they say the noise is likley to be inside the damper caused by ware and tare not to be concerened as it is safe and roadworthy and would pass mot test as it is. They say it is the valves acting under fast short travel on the damper. But this is FAR too heavy a knock that can be felt by sitting in the 7 seater with the corner striped out and your hand on the chassie rail , it feels harsh . Am i being over criticle like he would have you believe or do i have a point , i do feel that he thinks he has spent enough money on it and now its time to play the fair ware and tear card , is theyre reason even plauseable PLEASE ANYONE ANY THOUGHTS WELL APPRICATED (sorry for the essay folks)

 

[GordonTarling]

If it were mine, I'd take it to a specialist for a second opinion. Can you not get it to Jay Manek's 'Mercland'?

 

[doggz1]

i did take it to the local main stealer near me and they pointed out the rear subframe bush, full marks, but this didnt cure the problem the more i research brings me to suspect its the top strut mount its almost the only thing i can relate the sound and the intensity of the clunk with my limited technical knoledge but its almost imposible to test . It visualy looks ok but so did the rear subframe bush until you moved it with a pry bar then it was blatently shot . i would like to see a exploded view of the strut and its working components to pass judgement on the explanation given to me by the place i bought the car from all though they arnt dummies either so still not convinced metal to metal kinda noise to me spells ware/damage etc to other surrounding components .

 

[r11pak]

My dear e320 cdi estate driver..

...i had the same noise from the rear suspension on my car (a really horrible metal on metal thumping noise!), basically started on the cheap route of changing over ARB drop links, then 4 rear sub frame bushes..followed by the nitrogen spheres...
...still not gone, rides better, tighter etc...but the noise was still there...all multilink bushes were tight...it turns out that it was actually the bottom of the struts...although they worked and lifted / lowered the car..the rubber ends were worn and transmitting the noise into the car..
changed these (£250 each non MB) and now its perfect.

 

[doggz1]

sorry for the late reply havent signed in for a while ,yes i think that the only thing left unchecked/replaced on mine is the strut itself , dam loads of doe just hope it cures the problem cheers r11pak