Cold start chirping sound?
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Joined: May 2024
Posts: 3
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From: San Diego
2017 C63 Cabriolet
Cold start chirping sound?
Hi all,
I recently noticed my 2017 C63 producing a sort of chirping sound during cold starts. I know the engine is usually fairly ticky, especially on the drivers side. This is a new sound that just started recently.
The sound is like a chirp or a pulsing squeak which sounds almost like cicadas and follows the revs. It sticks around until the car is fully warm (200F+). Listening in the engine bay leads me to somewhere around the front half of the engine, between the radiator fan and the turbo inlets.
In the attached video it's the loudest as I let off the throttle.
The nature of the sound is making me think belt/pulley/pump/etc. The car is showing no codes. I've checked all fluids and they're fine. I'm around 5k miles on this oil. I've got intake and tune on the car but those have been in place for months. Has anyone had a similar experience?
I recently noticed my 2017 C63 producing a sort of chirping sound during cold starts. I know the engine is usually fairly ticky, especially on the drivers side. This is a new sound that just started recently.
The sound is like a chirp or a pulsing squeak which sounds almost like cicadas and follows the revs. It sticks around until the car is fully warm (200F+). Listening in the engine bay leads me to somewhere around the front half of the engine, between the radiator fan and the turbo inlets.
In the attached video it's the loudest as I let off the throttle.
The nature of the sound is making me think belt/pulley/pump/etc. The car is showing no codes. I've checked all fluids and they're fine. I'm around 5k miles on this oil. I've got intake and tune on the car but those have been in place for months. Has anyone had a similar experience?
Last edited by Gamma2; Oct 11, 2024 at 02:33 PM.
MBWorld Fanatic!
Joined: Sep 2016
Posts: 1,717
Likes: 608
From: Australia
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
Hi all,
I recently noticed my 2017 C63 producing a sort of chirping sound during cold starts. I know the engine is usually fairly ticky, especially on the drivers side. This is a new sound that just started recently.
The sound is like a chirp or a pulsing squeak which sounds almost like cicadas and follows the revs. It sticks around until the car is fully warm (200F+). Listening in the engine bay leads me to somewhere around the front half of the engine, between the radiator fan and the turbo inlets.
In the attached video it's the loudest as I let off the throttle.
The nature of the sound is making me think belt/pulley/pump/etc. The car is showing no codes. I've checked all fluids and they're fine. I'm around 5k miles on this oil. I've got intake and tune on the car but those have been in place for months. Has anyone had a similar experience?
I recently noticed my 2017 C63 producing a sort of chirping sound during cold starts. I know the engine is usually fairly ticky, especially on the drivers side. This is a new sound that just started recently.
The sound is like a chirp or a pulsing squeak which sounds almost like cicadas and follows the revs. It sticks around until the car is fully warm (200F+). Listening in the engine bay leads me to somewhere around the front half of the engine, between the radiator fan and the turbo inlets.
In the attached video it's the loudest as I let off the throttle.
The nature of the sound is making me think belt/pulley/pump/etc. The car is showing no codes. I've checked all fluids and they're fine. I'm around 5k miles on this oil. I've got intake and tune on the car but those have been in place for months. Has anyone had a similar experience?
Don't be tempted to use belt sprays they'll cause an embarrassing screech sound in our cars.
