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  #1  
Old 08-11-2006, 03:40 PM
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Join Date: Aug 2006
Posts: 4
1998 C230 Power steering noise

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Hey everyone. Lately, my C230 has had a random chattering noise from the power steering area, and I noticed that when your cruising on the highway, you can feel an ever so slight movement from side to side in the steering wheel. (like its trying to steer itself) Nothing drastic. Just barely noticeable.
If you have ever dealt with hydraulic systems, the noise sounds like a faulty pressure relief valve. Its random, and usually when is hot and at idle.
Is there a relief valve? Is there a filter that needs changed?
Any help is appreciated.
Thanks,
Tim

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  #2  
Old 08-11-2006, 08:58 PM
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Join Date: Feb 2002
Location: east coast
Posts: 1,255
the 1998 C230 - I also have one - has NO power steering filter.
Best to suck out power steering from reservior every six months and replace with fresh fluid.

Also listen carefully to the accessory belt pulley tensioner, i's the black miniature shock/damper looking thing behind and below the power steering resrvior. That tensioner is know to fail and make noise - though the noise you describe doesn't exactly match.
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Old 08-11-2006, 09:14 PM
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Join Date: Aug 2006
Posts: 4
Thanks Ethan. I pulled maintenance on the car today, oil, filter, and air filter, rear brake pads, and rotate the tires. I had a chance to actually stick my head and fingers in while it was up in the air. 80% positive its coming from the power steering pump. I looked and the level was barely on the dip stick. I'll add fluid and see what happens.
PS Mintex pads work very well on the rears. We'll see if they make noise as the wear. LOL
Thanks a bunch for the reply.
Tim

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Originally Posted by Ethan View Post
the 1998 C230 - I also have one - has NO power steering filter.
Best to suck out power steering from reservior every six months and replace with fresh fluid.

Also listen carefully to the accessory belt pulley tensioner, i's the black miniature shock/damper looking thing behind and below the power steering resrvior. That tensioner is know to fail and make noise - though the noise you describe doesn't exactly match.

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