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Old May 6, 2019 | 07:44 AM
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Default Bird noise
I have a 2006 that’s has a chirping noise coming from the front of the engine with little throttle applied. Could that be the harmonic balance.
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Old May 6, 2019 | 12:53 PM
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Originally Posted by shnids
I have a 2006 that’s has a chirping noise coming from the front of the engine with little throttle applied. Could that be the harmonic balance.
most likely you could try some belt dressing, A power bond SFI unit is a very good replacement and not too expensive.
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Old May 6, 2019 | 07:54 PM
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try a new belt, provided yours is old. there are belt measurement tools that can show belt wear to you. I's start there.
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Old May 6, 2019 | 09:22 PM
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Originally Posted by shnids
I have a 2006 that’s has a chirping noise coming from the front of the engine with little throttle applied. Could that be the harmonic balance.
It could. It could also be something else in the accessory drive, like a bearing. Worst case it's internal to the engine, such as a lifter. There seems to be a lot of that going around at the moment.
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Old May 6, 2019 | 10:24 PM
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Don't guess.....get yourself a mechanics stethoscope ($3.99 at Harbor Freight) or a short length of garden hose & listen around all the rotating components at the front of the engine to identify the source of the noise. Hopefully it's something cheap to fix like like a worn serpentine belt or a bad idler pulley bearing or maybe something more serious like the HB going bad. In any case, you'll know the source & can proceed from there.
Last edited by Dave S; May 6, 2019 at 10:25 PM. Reason: sp.
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Old May 11, 2019 | 05:30 AM
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One of the first things ever to go wrong with my Vette was a chirping type noise. Ended up being the exhaust manifold gaskets had perished would you believe? Sounded just like belt chirp but there you go.

You got aftermarket headers?
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Old May 11, 2019 | 08:43 AM
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I am all stock except for Borla exhaust
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Old May 11, 2019 | 05:28 PM
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Check the idler tension pulley.
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Old May 12, 2019 | 06:42 PM
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Is the harmonic balencer wobbling?
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Old May 12, 2019 | 07:06 PM
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^^^^^^ what he said.
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Old May 12, 2019 | 07:24 PM
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Squirt some water on the groove side of the belt to eliminate it or eliminate the sound.
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Old May 13, 2019 | 07:44 AM
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It is
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Old May 13, 2019 | 11:45 PM
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I to have this noise. Sometimes I hear it sometimes I don't. I'm assuming it's the HB.
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