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1992 300E 4-Matic
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87 Posts
Discussion Starter #1
Hey Everyone,

The past few days there has been a noise from the right rear wheel. When I apply pressure to be brakes the noise goes away. Also, the noise speeds up and slows down with speed. It's kind of a loud tick, or click. It only starts to happen after driving a couple miles.

There hasn't been any work doen on the back end since rear brakes a few months ago.

Thanks.
 

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This is guesswork but I once had such a click - a few weeks after brake rotor replacement. The brake caliper bolt had worked itself loose and the caliper was loose. I'm sure there's other things it could be.
 

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1995 E320
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2,508 Posts
you drive on roads that are rutted, have potholes and speedbumps and so on.

its not reaching to assume that possibly something has worked its way loose. get down there and make sure everything is tight. if everything is tight, and YOU STILL have the noise, then you might have something to worry about.l
 

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1992 300E 4-Matic
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87 Posts
Discussion Starter #4
Thanks guys. neanderthal, you're right about the roads; the are some of the worst around here. I'll check everything tomorrow and post an update.
 

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2008 S550, 2001 E55, 1995 E500, 1988 300E
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100 Posts
Check your flex disc.

My car was making the worst ticking noise possible when driving, I replaced the rear flex disc (about $50 online) and the car drove better, and sounded better (ticking was gone).. Be sure to get it replaced if its an older car.
 

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1992 300E 4-Matic
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87 Posts
Discussion Starter #6
There was a post a little while ago about someone who ran over something in the road and then a clicking noise started. Turned out to be a bolt missing in the flex disc so I'll check that as well.

Is changing the flex disc a DIY job, and any special tools needed?
 

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nalonge said:
Is changing the flex disc a DIY job, and any special tools needed?
Not that tough. You have to get the car off the ground a bit to get at it, and you have to get the driver's side rear wheel in the air, with the e-brake off and the car in neutral, so that you can turn the driveshaft to access the bolts, so there are some safety issues. Depending on model you may have to disconnect the drive shaft or lower it in order to work the flex disk in and out - it's not a smooth surface - it has a flange that makes it a bit harder to pull out than it looks.
 

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'94 E320 Coupe W124 (RIP) - '75 280S W116 - '11 Honda Accord Coupe V6 6-Spd (DD)
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I have the same exact issue, on my 94 E320 Coupe. Although it's not too intrusively loud. You have to drive with a window open to hear it.

My friend told me it's the CV joint...or something like that.

A week earlier before I started hearing the clicking, I took all my wheels off to clean them of brake dust build up. could that have done something? I also was toying around a little bit with a friend and got a little bit of air (I maneuvered it properly)...not too much though. I know it was probably stupid of me. BUt I had no problem right afterwards. I just noticed the clicking Sunday (a week before that was when I took all 4 wheels off, then got air a few hours later.
 

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1992 300E 4-Matic
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87 Posts
Discussion Starter #9
Chinny, I think your friend meant CV (Constant Velocity) joint, which will cause a clicking noise as well.
 

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1992 300E 4-Matic
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Discussion Starter #11
A flex disk (or disc, not sure which one) connects the driveshaft to the back of the tranny and to the front of the differential. They are rubber and held in by 6 bolts I think. I haven't had a chance to check mine out yet but will do so later this afternoon.
 

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'94 E320 Coupe W124 (RIP) - '75 280S W116 - '11 Honda Accord Coupe V6 6-Spd (DD)
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988 Posts
Hey Nolange, have you figured out what it was yet?

I took mine to have it checked out and the indy said that the flex disc and the CV joint both checked out ok.
 
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