C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Horrible noise!!

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Old Mar 31, 2010 | 08:23 PM
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From: Bulverde TX
Default Horrible noise!!

Ok so im getting a horrible squeaking noise from under the hood. I just got a used air pump elim. and i think it might be the pully on that because it was making a slight grind noise when i would turn it by hand. Where could i find a replacement and what else should i look at? Any help would be nice as its starting to get embarassing!
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Old Mar 31, 2010 | 08:29 PM
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From: moraga ca
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If that is the only change you made and the belts are lined up correctly, your pulley bearing is shot. Go to Autozone and have them match up a pulley that will work. That is what I did when I changed the configuration of my eliminator to work with an idler pulley instead of a regular pulley so I could run an electric water pump.
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Old Mar 31, 2010 | 08:40 PM
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From: Bulverde TX
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Originally Posted by 383vett
If that is the only change you made and the belts are lined up correctly, your pulley bearing is shot. Go to Autozone and have them match up a pulley that will work. That is what I did when I changed the configuration of my eliminator to work with an idler pulley instead of a regular pulley so I could run an electric water pump.
Ok so auto zone has a selection of pullys? I did not know that...do you think they will have the one i need?
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Old Mar 31, 2010 | 09:09 PM
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Also could this be caused by a bad tensioner? Just another thing i remembered...
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Old Mar 31, 2010 | 09:51 PM
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For some reason even experienced mechanics sometimes don't have stethoscope. I bought extra one from Harbor Freight for $3.
It takes about 1 min to diagnose tentioners, bad alternator and compressor bearings, steering pumps etc.
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Old Mar 31, 2010 | 09:54 PM
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From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work
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Originally Posted by 383vett
If that is the only change you made and the belts are lined up correctly, your pulley bearing is shot. Go to Autozone and have them match up a pulley that will work. That is what I did when I changed the configuration of my eliminator to work with an idler pulley instead of a regular pulley so I could run an electric water pump.
^^^Good Advice^^^
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Old Apr 1, 2010 | 12:09 AM
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Originally Posted by car5car
For some reason even experienced mechanics sometimes don't have stethoscope. I bought extra one from Harbor Freight for $3.
It takes about 1 min to diagnose tentioners, bad alternator and compressor bearings, steering pumps etc.
I just use a rubber tube usually but i dont have one here at college with me so thats why im kinda takn shots in the dark...
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