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Old 10-28-2013, 07:52 AM   #1
haz
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Help define this noise/rattle (could it be worn Drive Belt)

Boxster squeeky rattle - YouTube

From 0 to 10 seconds, it sounds like a squeaky rattle noise - undefined from where it is coming, but the Drive Belt sits right behind the seats so.. maybe that's the guilty one?

Pelican Technical Article: Boxster Drive Belt Replacement - 986 / 987
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Old 10-29-2013, 12:30 AM   #2
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Anyone? Let's reverse the question: what does a worn Drive Belt sound like?
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Old 10-29-2013, 12:59 AM   #3
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It sounds like a pulley is wobbling around...it seems like more than just a squeak as it has some harsh rattling as well. Pull off the belt cover behind the seats and have a listen
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Old 10-29-2013, 01:36 AM   #4
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Thanks, will do. And how do I determine if it is a pulley? I am not an expert opn these engines.. (THe sound is only a few seconds after a cold startup and dissapears after I touch the gas pedal..)

Edit: is this what you mean, epapp? http://www.pelicanparts.com/techarticles/Boxster_Tech/17-ENGINE-Idler_Pullies/17-ENGINE-Idler_Pullies.htm

Last edited by haz; 10-29-2013 at 01:44 AM.
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Old 10-30-2013, 01:32 AM   #5
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Any others?

I found parts numbers for all of these:

99610215166 POLY-RIB BELT
99610211958 DEFLECTION ROLLER
99610211757 TENSIONING ROLLER
99610211856 DEFLECTION ROLLER

Should I just change it all or is it worth removing the protection cover and inspect which rollers need replacing? The belt wil be replaced for sure.
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Old 10-30-2013, 11:34 AM   #6
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Sure, it could be the idlers or the water pump, or the power steering pump, or the ac compressor etc.

Its super easy to take the belt cover off and get a closer listen. I would investigate before replacing each pulley. That could be much more work that you want to get into for just this problem.
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Old 10-31-2013, 12:47 AM   #7
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I will replace the belt once I'm in there, seeing as this is a wear and tear type of part.. if I discover any worn pulleys while in there -I'll juist order that specific part.

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