Flowing water sound at idle

CamaroChriSS · 01-21-2023, 12:17 PM

I’m assuming it’s coolant related, and the car as pretty much always done this so I’m not concerned, but my 3 year old fell asleep in the car and so I sat there idling for a while and I really paid attention to the sound for the first time.

It comes and goes every ten seconds or so, and lasts about 15 seconds. Is this just coolant running through the engine? I’m idling around normal operating temp. (Tried attaching a video but it doesn’t seem to like the format)

TP2SS · 01-21-2023, 01:17 PM

Check the coolant overflow tank. If it's low you can hear that sound. My wife's CTS with the 2.0T was making it and I just filled the tank to the recommended level. Sound went away.

ctrlz · 01-23-2023, 07:24 AM

I would bet you are low on A/C refrigerant and you are hearing gurgling across the expansion valve.

easttxss · 01-23-2023, 12:28 PM

The A/C doesn't have to be low to make that sound, it will do it when the compressor cycles off.

Casper the friendly G · 01-23-2023, 04:31 PM

Quote:

Originally Posted by CamaroChriSS

I’m assuming it’s coolant related, and the car as pretty much always done this so I’m not concerned, but my 3 year old fell asleep in the car and so I sat there idling for a while and I really paid attention to the sound for the first time.

It comes and goes every ten seconds or so, and lasts about 15 seconds. Is this just coolant running through the engine? I’m idling around normal operating temp. (Tried attaching a video but it doesn’t seem to like the format)

Never heard of that issue. Do you live near a creek or stream?

CamaroChriSS · 01-28-2023, 05:01 PM

Quote:

Originally Posted by easttxss

The A/C doesn't have to be low to make that sound, it will do it when the compressor cycles off.

In one of the biggest “duh” moments of my life, I turned the climate control off and the sound stopped…

01-21-2023, 12:17 PM	#1
CamaroChriSS Drives: 16 1SS M6 Black -previous 00 Z28 M6 Join Date: Oct 2018 Location: DC Posts: 255	Flowing water sound at idle I’m assuming it’s coolant related, and the car as pretty much always done this so I’m not concerned, but my 3 year old fell asleep in the car and so I sat there idling for a while and I really paid attention to the sound for the first time. It comes and goes every ten seconds or so, and lasts about 15 seconds. Is this just coolant running through the engine? I’m idling around normal operating temp. (Tried attaching a video but it doesn’t seem to like the format)

01-21-2023, 01:17 PM	#2
TP2SS Drives: 2016 2SS Convertible Join Date: Dec 2019 Location: SE Michigan Posts: 576	Check the coolant overflow tank. If it's low you can hear that sound. My wife's CTS with the 2.0T was making it and I just filled the tank to the recommended level. Sound went away. __________________ 2016 2SS Convertible Hyper Blue/Ash Gray A8 Magnetic Ride Control Dual Mode Exhaust 2019+ version Split Spoke Silver Wheels Navigation Silver Rally Stripes

01-23-2023, 12:28 PM	#4
easttxss Drives: '16 2SS M6 Join Date: Aug 2019 Location: Hughes Springs, TX Posts: 320	The A/C doesn't have to be low to make that sound, it will do it when the compressor cycles off. __________________ David '16 2SS M6 black on black, SW long tube full exhaust, NPP, Roto-fab CAI, ported stock TB '16 2SS M6 black w/Metallic black stripes, Kalahari, 6 piston front (totaled 1/22/20) '14 Fusion Titanium 2.0T '83 Jeep Wagoneer

01-23-2023, 07:24 AM	#3
ctrlz Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016 Location: Ocean City, NJ Posts: 3,180	I would bet you are low on A/C refrigerant and you are hearing gurgling across the expansion valve.

User Name		Remember Me?
Password