Squeaking/Whistle noise on driver side of engine on cold start - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

shiftz33 · 08-12-2009, 04:32 PM

I had my 2010 Camaro SS A6 in this week for some other warranty work. I described a noise that would occur during "cold" starts (starts after not running for several hours or overnight).

Cool / Cold Engine RPM = 1100 (loudest noise)
Warm engine RPM = 875/900 (far quieter when engine is warm)
Originates from driver's side and front end of engine

My suspect was the power steering pump, but this is what I was told:

1) It was reproduced during a cold start (they had the car overnight)
2) Source identified as air passing over throttle blade
3) Verified noise, caused by air flow past throttle blades
4) Changes as vehicle warms up
5) Normal condition

I was told that there is an air bypass circuit that is used to help regulate the air/fuel mixture when the engine is cold. The airflow changes because of this bypass input and it is "whistling".

Am I lucky or what.....

Hoddi · 08-22-2009, 09:18 PM

So all is fine or did they have to do something to fix it???

OUR72GTO · 08-22-2009, 09:57 PM

Lots have reported this.

shiftz33 · 08-22-2009, 11:15 PM

Quote:

Originally Posted by Hoddi

So all is fine or did they have to do something to fix it???

I was told it was a "normal condition" so no corrective action was taken.

bluman · 08-23-2009, 04:22 PM

mine has it, it goes away 5-10 seconds after starting it, not an issue for me

08-12-2009, 04:32 PM	#1
shiftz33 Drives: 17 SS Sedan, 04 SSR Join Date: May 2009 Location: Sacramento Posts: 333	Squeaking/Whistle noise on driver side of engine on cold start I had my 2010 Camaro SS A6 in this week for some other warranty work. I described a noise that would occur during "cold" starts (starts after not running for several hours or overnight). Cool / Cold Engine RPM = 1100 (loudest noise) Warm engine RPM = 875/900 (far quieter when engine is warm) Originates from driver's side and front end of engine My suspect was the power steering pump, but this is what I was told: 1) It was reproduced during a cold start (they had the car overnight) 2) Source identified as air passing over throttle blade 3) Verified noise, caused by air flow past throttle blades 4) Changes as vehicle warms up 5) Normal condition I was told that there is an air bypass circuit that is used to help regulate the air/fuel mixture when the engine is cold. The airflow changes because of this bypass input and it is "whistling". Am I lucky or what..... __________________ RetroCarGuy530 YouTube Channel

08-22-2009, 09:57 PM	#3
OUR72GTO 2010 SIM Beige RS 6M Drives: SIM RS 6M 66 Corvair Silverado LTZ Join Date: Oct 2008 Location: Kamloops,British Columbia Posts: 4,677	Lots have reported this. __________________ CAMARO.. 2010 The Heart Beat is back in CHEVROLET Now let's put it back in America

08-23-2009, 04:22 PM	#5
bluman Drives: '10 Corvette GS/'13 Mustang Join Date: May 2009 Location: Long Island NY Posts: 636	mine has it, it goes away 5-10 seconds after starting it, not an issue for me __________________ 2010 Camaro SIM/CGM RS/2LT VIN #310 SOLD 2010 Corvette Grand Sport

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08-22-2009, 09:18 PM	#2
Hoddi Camaro Girl ~ Drives: 2010 Camaro Join Date: Apr 2009 Location: So Cal ~ Posts: 1,868 View My Garage	So all is fine or did they have to do something to fix it???