why does my opel astra h2 have a noisy idle valve.

2005 OPEL ASTRA
117,567 MILES
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BRADLEY PIYOOS
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I have a 2005 opel astra 1.6 enjoy and there is a high peak noise coming from the idle valve what can be the cause of the noise and how do i get rid of it.- Enter a Question or Subject and Click Search -
Sep 25, 2011 at 6:29 PM
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SQM
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Hello,

Hight pitched noise from the Idle air control valve happens due to an internal leak.
This leak is in the valve system itself and the IAC will need to be replaced.

Since the Astra was not sold in the US, we do not have access to the repair manual of this vehicle.
The IAC is located on the throttle body and is mounted by 2 screws.

Here are a couple of helpful guides on IAC:

https://www.2carpros.com/articles/how-a-idle-air-control-valve-works
https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Please let me know if you have any questions.
Thank you.
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Jan 23, 2022 at 2:26 PM
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