Chirping sounds in engine bay around 3000rpm - Mercedes GLA Forum
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post #1 of 2 Old 07-07-2019, 01:28 PM Thread Starter
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Chirping sounds in engine bay around 3000rpm

2018 GLA45 (North America). Wondering if this is a normal sound. I only have about 1800 miles on it and I think I might go test drive the two 2019 45s at the dealer to see if they do it or not. If I hold the RPMs between about 2900 and 3100 I get annoying "chirping" sounds coming from the engine bay. It's possibly coming from the turbo or blow-off valve? Anybody else notice this? I did a search and didn't find any threads.
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post #2 of 2 Old 07-08-2019, 09:47 AM
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I'd be concerned with the poly V belt first.

My Porsche has a variable cam solenoid that switches over at around 2700 rpm ... No noise but a slight power shift. I'm not sure if the GLA has anything like that or not.

Good luck and please report back.
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