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  #1  
Old 08-29-2007, 09:53 AM
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'86 420SEL: Klunk in Front Suspension

Hi, my 420 makes the occasional klunk in the right-front suspension. It usually happens when I am turning, as into a drive, and there is a change in elevation which flexes the suspension. It is one klunk, and it does not repeat, nor does it happen every time, and I haven't been able to reproduce it at will. I have good brake reaction arm joints (did it myself, about 5000 miles ago), and I cannot find any looseness in the ball joints by jacking up and prying on things. Shocks and tie rod ends seem tight. Car drives and tracks perfectly. I also can't find anything loose in the torsion bar or bushings. I thought you might have a similar experience and be able to offer advice.

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Old 08-29-2007, 09:54 AM
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Guide Rods - probability 88%
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Old 08-29-2007, 07:36 PM
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Overhaul time. Rent a spring compressor and have at it. Lots of threads on the subject, like mine for instance.

A list o'parts

W126 Front steering suspension rebuild list
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Old 08-29-2007, 08:11 PM
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On the guide rods, do the 4 mounting bushings as well. I've read where some people spent a lot of time pressing them out at home. I looked at mine on the first car I did, and decided to bring the entire asembly to the local auto machine shop. Twenty bucks later, all done, and I didn't even sweat. I'd suggest the same for you.
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Old 09-01-2007, 09:02 AM
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my similar noise was upper control arms. The guide rod bushings only made noise when I went over bumps in the road.
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Old 09-01-2007, 09:44 AM
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Quote:
Originally Posted by Randy View Post
.... I have good brake reaction arm joints (did it myself, about 5000 miles ago),
What the heck are those?
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  #7  
Old 09-01-2007, 11:12 AM
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Collapsed engine mounts can also make a clunking sound while turning.

Rob

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