weird idle noise?? - Subaru Enthusiasts Car Club of the Sierras

ddub · 2007-06-01, 01:55 PM

My car has about 70,000 miles on it now. I just started noticing a noise coming from the passenger side, front of the engine, upper corner by the timing belt. It sounds like a brushing/rubbing noise, at a constant pulsating rate. The car runs fine and I only hear it at idle. It almost sounds like a bearing needs to be oiled. Any ideas on what it might be? Thanks

sperry · 2007-06-01, 01:56 PM

Do your bearings need to be oiled?

But seriously, it could be an idler pulley or something in the timing-belt loop.

cody · 2007-06-01, 02:03 PM

A makeshift stethascope made of just a piece of hose may help you narrow down the problem maybe.

ddub · 2007-06-03, 09:15 PM

I inspected my belts, turned out my alternator belt was getting old and the teeth were coming off. I replaced both belts and wanted to make sure I tightened them correctly. I gave them about a 1/4 to 1/3 inch of play (read that in another forum). They seem to running fine, not slipping. Is that the right tension?

2007-06-01, 01:55 PM	#1
ddub EJ22 Join Date: Aug 2005 Location: Reno, NV Posts: 110 Car: 04 wrx, bunch of mods	weird idle noise?? My car has about 70,000 miles on it now. I just started noticing a noise coming from the passenger side, front of the engine, upper corner by the timing belt. It sounds like a brushing/rubbing noise, at a constant pulsating rate. The car runs fine and I only hear it at idle. It almost sounds like a bearing needs to be oiled. Any ideas on what it might be? Thanks

2007-06-01, 01:56 PM	#2
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	Do your bearings need to be oiled? But seriously, it could be an idler pulley or something in the timing-belt loop. __________________ Is you is, or is you ain't, my con-stit-u-ints?

2007-06-01, 02:03 PM	#3
cody Candy Mountain Real Name: Cody Join Date: May 2005 Location: Californication Posts: 7,751 Car: 03 Pussy Wagon, now with more pink! Class: TESP OMG Internet!	A makeshift stethascope made of just a piece of hose may help you narrow down the problem maybe. __________________ Slow and low, that is the tempo.

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2007-06-03, 09:15 PM	#4
ddub EJ22 Join Date: Aug 2005 Location: Reno, NV Posts: 110 Car: 04 wrx, bunch of mods	I inspected my belts, turned out my alternator belt was getting old and the teeth were coming off. I replaced both belts and wanted to make sure I tightened them correctly. I gave them about a 1/4 to 1/3 inch of play (read that in another forum). They seem to running fine, not slipping. Is that the right tension?