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#1
12-06-2004, 11:15 AM
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High speeds, weird noise, big problems?
Hi guys.
I drive a 250 mile stretch pretty often on I-75. On my past two trips, after an extended duration of 75-80 mph speeds, I start to here a knock of some sort from the rear of the car (I think?). It isn't high pitched, no grinding or rubbing noises, just like a knock or clunking. I don't think it's engine or tranny related, I'm guessing it's possibly the drivetrain/differential. Weird thing is, once I exit the interstate and slow the car down, the noise goes away. But once I get back on, after 40-50 miles, it comes back. Any ideas? Possibly something loose or that should be replaced? Thanks. Damon Fite ---1983 300TD Wagon---300,000 miles+!!! 
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1984 300TD Wagon--Astral Silver--Retired 1983 300TD Wagon--Dark Blue--Retired 
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#3
12-06-2004, 12:21 PM
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What exactly should I look for? Will there be visible signs of wear? Is it just a matter of tightening it? How will I know if it needs to be replaced?
Thanks.
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1984 300TD Wagon--Astral Silver--Retired 1983 300TD Wagon--Dark Blue--Retired
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#4
12-06-2004, 04:40 PM
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Sounds like your CV axles. Have someone hold the brake and slowly move the gear selector from D to R a couple times while you watch the axles. If they are bad they will move around a bit.
I have blown about 3 sets of these guys and every time it was a new noise. One set was just a click at slow speed, another was a grinding sound at around 90, and the other was only under high speed cornering. Each decided a road trip was a good time to start making noise. After clicking 2 of the sets lasted 3K until I got home and pulled them, could have gone longer but they were VERY UGLY when they did come out. All the balls had fallen out, just metal to metal clanking around back there!
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1983 Mercedes 300SD 1987 Mercedes 300SDL 2001 VW Passat 2.8 AWD 2007 OM642 Jeep WK 4x4 
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#5
12-07-2004, 12:52 AM
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Breckman,
What have you used to replace your bad CV axle shafts? New, used, or rebuilt? Thanks.
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1961 190Db retired 1968 220D/8 325,000 1983 300D 164,150
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#6
12-07-2004, 05:12 AM
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The last 3 sets I have installed are used, and they served their purpose well. I will buy a brand new set this time around. I can do the job in about 45 min after all the swapping I have done.....
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1983 Mercedes 300SD 1987 Mercedes 300SDL 2001 VW Passat 2.8 AWD 2007 OM642 Jeep WK 4x4
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