New to this site. Just bought a brand new vauxhall astra 1.4 turbo 150bhp griffin..
Love the car and its powerful but I noticed when I turned the air con on, theres a slight whistle for a few seconds and it disappears. Worried with it being brand new or is this just normal?
Had the same problem. The dealer changed the compressor in warranty.
In the meantime the dealer lended me an Astra ST Automatic. It had the same whistle sound. Mine stille have the whistle sound to, despite a new compressor. Think it is a bad build of pipeline somewhere.
My car has a slight whistle at certain interior fan speeds, but that is definitely the fan or the sound of air rushing inside some plastic tubing or maybe the airflow over some duct opening.
My 1.6t petrol gives a moan/groan from under the bonnet and a hiss noise behind the dash for a few seconds while A/C first activates but quietens down fairly quickly
This is normal with all air con systems and it's the rapid pressure change moving through the system
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