1989 300TE m103 engin whirr
Hi guys, i just picked this car up and it is my first Benz-i love it. I have noticed a bit of a whirring sound when the engine runs. Is this normal for one of these pups? Perhaps a normal sound due to a timing chain not a belt etc? If this is not normal then what could this be? Any pointers would be greatly appreciated. Motor runs great.
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There is a vacuum leak somewhere behind the heater controls.
Ned, If you in Australia, here's some info for you. (a) Go to http://ww.ozbenz.net/ and ask your questions there. Oz specced cars are slightly different from Euro and U.S. models. (b) Watch out in Glenrowan :o |
Bewdy mate, thanks for that. This is the MB Aust guys isn't it? I got some gear from them the other day, great bunch of guys. I registered on the site but my activating email hasn't come through yet, perhaps a christmas shut down thing?
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I would guess that the whirr is from the idler pully on the belt tensioner. I had a similar situation on an '88 300E. New pully fixed it.
Rgds, Chris W. |
Thanks for that, i'll check it out when it stops raining. It's a pretty loud whirr and i am now starting to think it may be the PS pump. Are these a difficult/costly thing to replace? My engine is an M103 and the pump has that silver cylinder resevoir if that helps identify it.
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AS mentioned above Most likely its the belt tensioner pulley on a failing tensioner .As the rubber in the tensioner collapses the pulley runs askew and the bearings fail . yes its quite loud and ominous sounding.suggest replacing the belt as well due to one side wear it causes
mak |
Hmmmm, i had a look at this wheel and it seems to run straight. The sound is quite a definate whrrr that reacts to engine speed. Man I hope it isnlt anything expensive!!!???
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The easiest way to find the source of the noise is to use a car stethoscope.
They are very cheap, just a few $. Do not use screwdrivers or sticks, if you hold them to your ear you can’t see if they touch a moving part! Be very careful, don not touch anything moving!! And of course do not wear any loose clothing, scarf’s etc!!!!!!! Rob |
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