squeaky suspension remedy? - Mercedes-Benz Forum
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#1 (permalink) Old 10-04-2008, 03:42 AM
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squeaky suspension remedy?

I have a super squeaky suspension. Anyone know of any remedies? I tried WD40, but that only worked for a day or so..I think its squeaking from the control arms but i'm not sure. who else got this problem? It's really loud and annoying, drive me nuts over speed bumps. It even squeaks when i exit the car and i'm only 165lbs!

if it ain't broken, i don't own it.
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#2 (permalink) Old 10-04-2008, 06:29 AM
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Try to use silicone spray where the metal meets the rubber. That extension tube is very handy for this purpose.

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#3 (permalink) Old 10-04-2008, 09:24 AM
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New bushings everywhere!!! It seems like the older these cars get, the more likely that anything made of rubber should be removed and replaced with new.

On my 126, I've used a product called Fluid Film to quiet them down to eliminate the noise before i replace the bushings. Fluid film is a product which is used as a rust preventative, it's an excellent lubrciant, cleaner, and it is made of animal fats and wool. It does not seem to have a negative effect on rubber as more harsh petroleums do- WD-40 is a really bad idea on rubber, it's going to quiet it down only as it deteriorates what's left of the bushings. I recommend this stuff to everyone on the forum for just about anything. It has kind of a strong smell for a day, but it stays where you put it, and it lasts for a long time, even through rain.

If the bushings are getting old, replacing them is the ultimate solution, and you're going to be much happier in the long run if you do replace them, it doesn't just quiet it down, but it firms up the car and improves handling.

These old cars deserve it! The engines last forever, even if horribly neglected, but the rest of the car is still a 25 or 30 year old vehicle.

Aaron-
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#4 (permalink) Old 10-04-2008, 11:08 AM
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I had a squeaky suspension for a long time. I would spray everything down with PB Blaster, it would quiet down for a while.
I finally located the offending item, my lower ball (support) joint. I had it replaced, not a DIY for me, no more noise.
I would think if a bushing was gone, you should have other problems as well. Check your tires for uneven wear, and inspect your ball joints for torn boots.

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'84 CD-weekender!
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#5 (permalink) Old 10-04-2008, 03:26 PM
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I have a knock when I turn left and sometimes right. It will also knoch when I start the motor. I think it all started when I rotated the tires in my garage. Any idea as to what it could be?

'79 280CE with 226,000 miles
'76 240D 4 speed with 190,000
'85 300D Turbo with 266,000 miles


GONE but not forgotten
'76 300D with 195,300 miles
"83 300D with 174,000 miles

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#6 (permalink) Old 10-04-2008, 03:59 PM
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My car has a horrible sounding knock... turned out it's inside my driver's side door. I suspect I have a hinge going. Plus my door is rotten from rust.

1982 240D - 160,000 miles - Black leather interior
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#7 (permalink) Old 10-04-2008, 05:48 PM
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Thanks for the tips! I know someone who has a sever knock when turning too. I'm pretty certain it's the CV Joints going bad on the rear axels. Check your boots for tears. If it is broken open and dried out, time for new axels. the knock will only get more frequent the longer that goes unrepaired. It's a PITA to change too but i know how loud the knock is, and i think living with that sound is worse!

if it ain't broken, i don't own it.
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#8 (permalink) Old 10-04-2008, 06:05 PM
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79mercy-

take a look here for pics of an axel swap.

Pictorial - Axle replacement - ShopForum

if it ain't broken, i don't own it.
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#9 (permalink) Old 10-04-2008, 08:06 PM
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sorry I forgot to include this piece of info. The knock is coming from the drivers side front.

'79 280CE with 226,000 miles
'76 240D 4 speed with 190,000
'85 300D Turbo with 266,000 miles


GONE but not forgotten
'76 300D with 195,300 miles
"83 300D with 174,000 miles

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#10 (permalink) Old 10-05-2008, 04:50 AM
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I didn't know it was inside my door until I slid my hand out the window and felt the fender and door when the knock happened (while driving)

Those sounds travel through metal pretty easily, but when I had my hand over the wheel well, I couldn't feel anything. When I slid my hand over the door...BINGO!

Hopefully, I'm going to get a chance to tear apart the door today, but if not, I'm not worried. It's not a safety issue.

1982 240D - 160,000 miles - Black leather interior
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