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#1
05-19-2011, 04:27 PM
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idler pulley vibration 90 350 SDL
Well the old "rod bender" passed 250K, only problem is idler pulley vibration. I have replaced every thing that can be replaced and it still vibrates. Anyone now of a solution? Not a big problem but really noisy when cold.
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#2
05-21-2011, 09:03 PM
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Did you replace the tensioner shock?
__________________
1991 350SD (updated rods) Biodiesel B100 when I can find it. Dino when really cold outside
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#3
05-21-2011, 09:55 PM
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when i said i replaced everything that could be replaced that's what i meant.
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#4
05-21-2011, 10:04 PM
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Mine vibrates a bit when the ac is running. Do you have the correct length belt? Benz specifies a different one for the 3.0, the 2.5, and the 3.5 for some reason. Don't know what the difference is, I'm using the one AutoZone spec'd, same as a Buick 3800.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#6
05-22-2011, 09:06 PM
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Look closely at all the pulley grooves,on my 91 rubber & dirt had built up in the grooves and was causing the tensioner to vibrate,cleaning them cured the problem. Not hard to do but it does take some time to do them all. Don
__________________
Red Green "This is only temporary,Unless it works!"  97 E300D 157000 miles 87 300TD ?141k? miles
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