Noise on the accessory belt! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-05-2006, 01:44 AM   #1
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Default Noise on the accessory belt!

*sigh*

I just did my HB a couple months ago, and now something else is making noise. You can only hear it at warm idle...alternator perhaps? At any rate, does this sound familiar to anyone...

http://members.shaw.ca/bonneville01/MVI_0015.avi

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Old 01-05-2006, 02:01 AM   #2
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Sounds more like something loose and vibrating than a pulley or bearing of some sort. Really makes me thing of a cracked accessory bracket or loose mount. Not like a pulley at all.
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Old 01-05-2006, 10:57 AM   #3
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Remove the Belt and check the water pump for up and down play in the bearings... Almost sounds like the vanes in the pump are chewing the timming cover... Just do a cheak and see if it has any play... If not than we'll move on

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Old 01-05-2006, 12:08 PM   #4
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Default noise

also when you have the belt off spin the idler pulley and check for noise.
The bearings tend to go dry.
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Old 01-14-2006, 04:12 AM   #5
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Think it'* the alt. I was driving down the road and the sound got louder. Next thing I knew the voltage guage was well below 1/2. The battery light then came on, so I shut off all uneccessary electrical equipment and quickly went home. Voltage at the battery posts shows 12v with the car off, and 12v with the car running. Gonna replace the alt. tomorrow morning...I'll let you know what happens.
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Old 01-14-2006, 01:11 PM   #6
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Quote:
Originally Posted by captainmiller
Think it'* the alt. I was driving down the road and the sound got louder. Next thing I knew the voltage guage was well below 1/2. The battery light then came on, so I shut off all uneccessary electrical equipment and quickly went home. Voltage at the battery posts shows 12v with the car off, and 12v with the car running. Gonna replace the alt. tomorrow morning...I'll let you know what happens.
Ahhhh.... The bearings went...

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Old 01-14-2006, 02:19 PM   #7
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Car started this morning. Replace the alternator. Car will not start now, just a single click. Even with the car boosted by another running car it just clicks once and nothing. Voltage reads 12.3v at the battery, all electronics work. Any ideas whats going on here?
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Old 01-14-2006, 02:37 PM   #8
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When was the last time you checked or cleaned the Battery cables? Is there 12v at the starter?

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Old 01-14-2006, 02:44 PM   #9
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Battery cables were checked this morning...they are tight and clean. Don't know about voltage at the starter...
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Old 01-14-2006, 02:47 PM   #10
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I had mentioned on MSN to tap the starter, since it sounded like a dead spot. It didn't help.
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