1983 300d rpm meter not working need help - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 02-20-2006, 09:24 PM Thread Starter
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1983 300d rpm meter not working need help

Is there something i should do before I start taking off the dash cluster? any advice? what's the best way to figure out the problem?

samson[V]
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post #2 of 5 (permalink) Old 02-20-2006, 09:28 PM
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RE: 1983 300d rpm meter not working need help

Have you tried placing any thing behind the module in the "beer can" fixture under the hood? Number 2 in the attached image:

1981 240D---234K Gone
1983 300TD--103K
1995 E300D--162K Gone
2007 S550 ---160K
Yea these cars will last a million miles but what with terrorists, natural disasters and the H1N1 swine flu pandemic... God help us there's anyone left here to drive them.
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post #3 of 5 (permalink) Old 02-21-2006, 06:22 AM
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RE: 1983 300d rpm meter not working need help

do a search on 'cigarette butt'

1984 300D Turbo - 231k.. son's car now... totalled 11/30/07 RIP

send lawyers, guns, & money...
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post #4 of 5 (permalink) Old 02-21-2006, 06:28 AM
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RE: 1983 300d rpm meter not working need help

Quote:
84300DTurbo - 2/21/2006 8:22 AM

do a search on 'cigarette butt'
[:D][8D]

1981 240D---234K Gone
1983 300TD--103K
1995 E300D--162K Gone
2007 S550 ---160K
Yea these cars will last a million miles but what with terrorists, natural disasters and the H1N1 swine flu pandemic... God help us there's anyone left here to drive them.
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post #5 of 5 (permalink) Old 02-21-2006, 07:01 AM
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RE: 1983 300d rpm meter not working need help

Quote:
Cyberbach - 2/21/2006 9:28 AM

Quote:
84300DTurbo - 2/21/2006 8:22 AM

do a search on 'cigarette butt'
[:D][8D]

yep [:)]


Behind the driver side headlight there's a 1.5" diameter cylinder. Spin off the tethered cap. A piece inside with electrical connectors is free to slide in the cap. Pull it out -- pull it to the end of its travel then rock it out. Carefully scrape off as much of the silicone goop as you can. Don't cut any wires, solder or traces. Use your imagination to figure out what insulating material you can fit between the cap and the sliding piece to put pressure on the solder joints.Some folks use a foam packing peanut or a cigarette butt. Put it back together and tighten it just enough to get the tach to work and maybe a little more....

1984 300D Turbo - 231k.. son's car now... totalled 11/30/07 RIP

send lawyers, guns, & money...
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