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  #1  
Old 10-01-2004, 11:47 AM
benzzy
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Question Popping from the Rear Wheel on 85 300TD

1985 300TD Wagon 180k miles...

I've notice sometimes at a stop light when the car is coming to a stop that sometimes I hear a loud poping noise from the driverside wheel area, especially if I turn to the left the wheel makes a consistant poping noise?

I have not inspected the rear diff, but the noice seems to be coming from the wheel area not the diff. Any ideas of where I should start?
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  #2  
Old 10-01-2004, 11:49 AM
tomm9298's Avatar
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Thumbs up Sounds like...

Most likely a CV joint. Check the boot, probrably torn/torn away.
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  #3  
Old 10-01-2004, 12:33 PM
benzzy
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Red face Check that...

I recently changed out the accumulators, while down there I checked the boots, and all four where in good condition...
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  #4  
Old 10-01-2004, 01:01 PM
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The boot doesn't have to be torn for the joint to be bad. I had one that was in terrible condition even though the boot looked perfect.
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  #5  
Old 10-01-2004, 03:13 PM
benzzy
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ehhhh...

Did you fix? If so was it hard?

If not how much did you pay?
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  #6  
Old 10-01-2004, 03:54 PM
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I got caught on a trip with a CV joint that went bad. I had both half axles replaced with rebuilt ones. It cost me around $450. When you are 900 miles from home there not much you can do except be glad someone knew how to fix the problem and they could do it before I had to get back on the road again.
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  #7  
Old 10-01-2004, 03:55 PM
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Oops, sorry. I forgot you are new here. The route most people take is to replace the half-shaft, although it is possible to replace just the bad CV joint. There's LOTS of information here on the board about it. I pretty sure the info about how to replace just the joint is in BoostNBenz's pages that are stickied at the top. You can also try searching for "CV Joint", "CV Boot", "half shaft" or "half axle."
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  #8  
Old 10-01-2004, 09:15 PM
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Jason, what kind of poping noise is it? Is it more like a clicking? Is it like a single pop or clang?

It could be something as simple as a sway bar link that's broke loose.
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  #9  
Old 10-01-2004, 11:02 PM
benzzy
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Hmmm...

The only thing I can liken it to was once I had a similiar problem to my Range Rover...After a flood the car began to have a popping noice, very distinct. Pop...Pop...Well shortly after it became a big problem, very load...Appearently the seals had given way and the water had gotten into the axel and destroyed the gears...

I think something similar may be happening with the wagon, but do to wear/neglect instead of water...
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  #10  
Old 10-04-2004, 03:35 PM
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I am having a similar problem with my '82 wagon. It sounds like there is a screwdriver smacking the inner wheel well with every turn of the wheel (i.e. it is faster at higher speeds). If I had to use a word to describe the sound phonetically, I'd say "clink".

Sometimes I think that if I were watching the car from outside as it made this noise, I would be able to see the onomatopoeia, like in the 60s Batman series.... "CLINK!" in a big spiky bubble...

Anyway, I think the problem is the CV joint, from what I've been told. Since its coming from the rear end, I checked the differential for metal debris in the oil, and it was fine. The only other thing that could make this kind of noise is the CV joint. I'll follow this thread and see if you find the soution to be something else, before I go order an axle. Good luck!
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  #11  
Old 10-04-2004, 05:52 PM
benzzy
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Estimate Tomorrow...

I'm taken the car to the local independent MB mechanic in the morning...I'll let you know...
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  #12  
Old 10-04-2004, 09:33 PM
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Quote:
Originally Posted by Rick Miley
Oops, sorry. I forgot you are new here. The route most people take is to replace the half-shaft, although it is possible to replace just the bad CV joint. There's LOTS of information here on the board about it. I pretty sure the info about how to replace just the joint is in BoostNBenz's pages that are stickied at the top. You can also try searching for "CV Joint", "CV Boot", "half shaft" or "half axle."
Most of that information is about replacing the boots only. I don't think there is much that a DIY'fer could actually do to rebuild a bad CV joint. And if it is the joint that is making the noise it is certainly bad.
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  #13  
Old 10-05-2004, 12:41 AM
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I had the exact problem with a 107SL and it turned out to be a bushing had dried out causing the suspension link to drop inside the rim. Every time I would turn left or drive up a driveway apron, it would scrape the interior of the alloy wheel. Turned out to be a cheap fix..$45 or so from the dealer.
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  #14  
Old 10-05-2004, 03:50 PM
benzzy
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Talking First the good news...

I love a mechanic who tells me to just describe my problem and not to diagnose the car, thats his job and he is the professional. Not an amatuer like me....

So I explained the noise I was hearing and hoped for the best...

Just heard from him and he believes the issue is with the strut having a warnout bushing...

CV Joints are fine.

Fix it!

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  #15  
Old 10-14-2004, 12:54 PM
benzzy
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Update...

Yep not the strut....pop pop pop on every left turn, gradually over about 50 miles the noise got worse. Especially at a stop light just rolling slightly pop pop pop. Kind of embarassing.

Turns out the axl needed to be replace, even though the CV boots looked good the joint was bad, not sure why...

Bought a rebuilt one for 175. Paid the mechanic 180 to fix...

While the car was up on the rack I got a good look at the underside, much easy when it's up high...

ehhhh, front flex disc looked really bad, two large horizontal splits in it with string hanging out...

New flex disc for 96. Paid the mechanic 60 to fix...

No more noise while I'm driving...priceless
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