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  #1  
Old 11-18-2009, 10:01 PM
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Why you need a sense of humor to own an abused 250CE...

Sometimes, something in the instrument panel makes this lovely noise. I'm guessing it has something to do with the trip odometer? The odometer, speedometer, and trip odometer still work despite the racket. The car in question is of course Wilma, 1970 250CE (originally sold in Italy, imported to Saudi Arabia, then Germany, and finally the States.)

edit, link http://www.youtube.com/watch?v=F1ZhD6T0yVw


Last edited by JiveTurkey; 11-18-2009 at 10:43 PM.
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  #2  
Old 11-18-2009, 10:12 PM
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Put the video on youtube and then just copy and paste in a post.
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http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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  #3  
Old 11-18-2009, 10:42 PM
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Success, video was taken at about 80KPH

http://www.youtube.com/watch?v=F1ZhD6T0yVw
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  #4  
Old 11-18-2009, 10:54 PM
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Man, what racket. I had a rabbit speedo cable get dry enough to sound like that once.
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  #5  
Old 11-18-2009, 11:48 PM
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man thats loud. Try putting some light oil in the cable.
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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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  #6  
Old 11-19-2009, 07:23 AM
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I agree...cable lube. The rubber jacket on the cable is probably failed too. Lubing the cable will be a short term fix, a new cable is probably in order if you can get one.
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  #7  
Old 11-19-2009, 10:34 AM
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My 68 280SE made that exact sound. It turned out to be the speedometer itself. I sent the speedometer out to palo alto speedometer to have them repair, clean, and calibrate it, and that solved the problem.

John
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  #8  
Old 11-19-2009, 10:53 AM
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Thanks John, thats what I was thinking. I'm sure the cable could probably use lubrication, but when I disconnect the speedometer cable and drive, the sound is gone. Thank god for the quick access port (aka center dash speaker hole.)
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  #9  
Old 11-19-2009, 01:44 PM
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My 450SEL makes a racket and it's also the speedometer. I've opened it up and lubed it which fixed it for a winter but now that it's getting cold again, it's back.

Michael
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  #10  
Old 11-19-2009, 02:51 PM
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My GTO did that when it was cold, then one day it just stopped. So did the speedometer.

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  #11  
Old 11-20-2009, 07:02 PM
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new cable should correct it, then again ,might not if it is the same at all speeds may be speedo
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  #12  
Old 11-20-2009, 08:00 PM
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Is your odometer working properly? If not (check if it is slow), then it's probably the zinc gear drive wheel that is slipping on the shaft in your speedo. Common ailment. I had it in my 250C and also in my current coupe. Screeches like crazy, especially in cold weather. There are postings on how to take your speedo apart and rought up the shaft and/or glue it.

Bert

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