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Join Date: Mar 2008
Location: San Jose, CA
Posts: 3
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Strange Sounds Coming from Engine
Hello all. I have a growing concern towards a sort of "drum beat" sound coming
from somewhere either on top or behind the fan. The sound is like a fast thu..thu..thud which can be heard at idle and sometimes on accellaration. It is so noticeable that I almost don't want to drive it that much until I figure out what it is. It began after I had my car washed. What should I do? Can anybody help me? I would greatly appreciate any advice or information. I hope it is not serious. Thanks in advance....
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Al _____________ '90 964 C2 Baltic Blue |
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04-16-2008, 12:42 AM
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Location: north america
Posts: 2,228
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best case scenario is that its your dual mass flywheel failing... they can get pretty noisy but I dont know if the 1990 got the dual mass flywheel.
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04-16-2008, 05:05 AM
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OK, flywheel is certainly an option but the fact that it started after washing the car made me think. Of course this could be just a strange coincidence but it might be related. Is it possible that water washed something into the fan housing? Did you wash the engine as well?
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'91 C2 Targa |
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04-16-2008, 08:57 AM
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Location: Toronto, Canada
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Fan hub bearing maybe? When it goes bad, its sounds like a drum beat coming from the center of the engine, above the fan. The noise comes from the fan hitting its housing. You may want to check the fan housing (especially at the 6 o'clock position) for wear mark.
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'10 997.2 C2 Meteor Gray '00 Boxster Arctic Silver - sold 95 C2 Polar Silver - Sold |
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04-16-2008, 10:12 AM
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Posts: 1,031
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If you want to turn some wrenches, remove all of the belts, start the car [for a short amount of time] and see if the noise is still present.
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04-16-2008, 06:51 PM
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Location: San Jose, CA
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Quote:
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Al _____________ '90 964 C2 Baltic Blue |
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04-29-2008, 04:24 AM
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