C36 AMG, C43 AMG (W202) 1995 - 2000

c43 steering noise

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Old Jun 29, 2014 | 08:56 PM
  #1  
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mercedes c43
c43 steering noise

Needs some help, my steering makes a whining noise when i turn left. can't seem to figure out what the problem is. This is what i have done to try to fix the problem. changed the ball joints on the left and right side, cheated the power steering fluid. Still makes the same noise but it only does it when turning left.
Any advice would be greatly appreciated. Also had the mercedes guys look at it when I had the ac condenser replaced. They could not find anything. PLEASE HELP drives me crazy, very annoying, loud and embarrassing.
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Old Jun 29, 2014 | 09:39 PM
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1999 C43 AMG, 2005 E55 Wagon
isn't there a fluid filter inside the pump? that or the pump itself?
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Old Jun 29, 2014 | 10:34 PM
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mercedes c43
c43 steering noise

Thanks for the info, will check it out tomorrow.
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Old Jun 30, 2014 | 04:30 AM
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Originally Posted by Sulaco
isn't there a fluid filter inside the pump? that or the pump itself?
I have never seen one inside our outside, but a flush and change of the power steering oil would not be a bad idea. Don't know if that will eliminate the noise, but who knows without trying....
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Old Jun 30, 2014 | 04:31 AM
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I had pretty much the same issue as you. Changing the wheels bearing did the trick and remove the noise.
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Old Jun 30, 2014 | 07:39 AM
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Originally Posted by DRBC43AMG
I have never seen one inside our outside, but a flush and change of the power steering oil would not be a bad idea. Don't know if that will eliminate the noise, but who knows without trying....

I assume this is also true of our cars? My PS pump looks awfully similar to my older ones.
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Old Jun 30, 2014 | 08:06 AM
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Mine doesn't look at all like the one in the video. It's a rectangular reservoir with a black cap on top. Also apparently this maintenance tip is for older MB's up to 1995.
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Old Jun 30, 2014 | 09:24 AM
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we don't have filter in our steering fluid isn't..?,

I put Inline Magnafilter in my previous C43, perfect with no issues...

c43 steering noise-magna-filter.jpg

ZAYED,,
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Old Jun 30, 2014 | 10:29 AM
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Good idea Zayed. I have such a filter hanging around in the workshop.
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Old Jun 30, 2014 | 10:44 AM
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i've seen these round power steering metal filters on several webshops, but they don't fit our cars?
how would you put this in the tiny fluid box?

Last edited by KJI3jflarryfe93; Aug 3, 2014 at 07:42 AM.
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Old Jun 30, 2014 | 11:06 AM
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This filter for the old style metal round tank, don't see if necessary to put filter inside the tank...!

c43 steering noise-steering-filter.jpg

ZAYED,,
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Old Jun 30, 2014 | 11:30 AM
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Originally Posted by cm60k
This filter for the old style metal round tank, don't see if necessary to put filter inside the tank...!

Attachment 290109

ZAYED,,
why does most webshops list this round metal filter for C43?
i once bought this filter and had to return it when i found out it was not for my car
filter is it made for early 90's pre facelift w202 cars with older style power steering?
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Old Jun 30, 2014 | 11:47 AM
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Pretty hard for anyone here to help diag a noise if we can't hear it.
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Old Jun 30, 2014 | 11:52 AM
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Originally Posted by kowalski
why does most webshops list this round metal filter for C43?
i once bought this filter and had to return it when i found out it was not for my car
filter is it made for early 90's pre facelift w202 cars with older style power steering?
+1,

I think it's part of advertise, most of shops thought this filter is continuous part till 2006...?!!?

ZAYED,,
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Old Jun 30, 2014 | 11:53 AM
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I shot a quick photo a moment ago...
Attached Thumbnails c43 steering noise-c43-power-steering-reservoir.jpg  
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Old Jun 30, 2014 | 11:56 AM
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I know it's hard to diagnose, but i was hoping some one had this issue. Thanks for all the suggestion, I will keep everyone posted when i find out the problem.
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Old Jun 30, 2014 | 11:56 AM
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There is a screen filter inside the resevoir. You have to replace the resevoir to replace it, the whole resevoir is not that expensive. This can cause noises, I've seen the screens break away. If fluid is rushing around in your resevoir with the engine on, your screen is busted.
I can't say this is his noise. If the noise changes while he's revving it up, it's likely this or the pump. If it doesn't.... well it's impossible to diag a noise without hearing it. A sound clip would be helpful, record on phone, post to youtube.
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Old Jun 30, 2014 | 12:43 PM
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Good to know Benzslo, i didn't know about that,

If we got a new tank, is MB screwed or glued that screen in it...??

ZAYED,,
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Old Jun 30, 2014 | 01:21 PM
  #19  
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Thanks guys for all the help, the noise only happen when i'm making a left turn, does not happen when turning right. no noise when idle or just by turning the when left or right just when driving.
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Old Jun 30, 2014 | 01:28 PM
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Originally Posted by cm60k
Good to know Benzslo, i didn't know about that,

If we got a new tank, is MB screwed or glued that screen in it...??

ZAYED,,
It is molded in to the plastic housing.
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Old Jun 30, 2014 | 02:52 PM
  #21  
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Originally Posted by mdaviscda
Thanks guys for all the help, the noise only happen when i'm making a left turn, does not happen when turning right. no noise when idle or just by turning the when left or right just when driving.
I'm going to say it again, but this sounds like a bad wheel bearing... Not sure if you've replaced those already but if not you should check it out. Just my 0.02 cents
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Old Jul 6, 2014 | 09:36 PM
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With the engine running for at least 2-3 mins take the P/S cap off and have a look at the fluid inside. If it appears to be swirling around rather than just sitting there then the baffle inside the tank if broken and you'll need to replace the tank. This will cause a lot of P/S pump whining that comes and goes. it's easy to check and cheap to fix. This is a good place to start before looking further.
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