Engine whooshing after shutdown

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Oct 4, 2013 | 07:08 PM

#21

BlueOx

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Joined: Feb 2012

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Quote:

Originally Posted by Shaka

How about the rear fan, when does that come on? Can dealers or anybody get c7 service manuals on line now. Did you type all that?

I was wondering this also.

Oct 4, 2013 | 07:44 PM

#22

talon90

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Joined: Aug 2002

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St. Jude Donor '05-'06-'07-'10

Quote:

Originally Posted by Dusty Starbucks

Thanks Paul. I am really glad to see they are doing a PWM variable speed fan control. It is a far better approach when done correctly. About 6 years ago I had a company (Power Systems Management) that built variable speed fan controllers and pitched the Ford engineers in their headquarters about it. Very similar operation to what they are doing on the Vette, but we had far less info coming from everyday telemetry.

Can you tell me where the coolant temperature sensor is located? I assume it is at the coolant output of the radiator to provide lowest closed loop delay.

I don't know. I'll have to check.

Oct 4, 2013 | 07:47 PM

#23

talon90

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St. Jude Donor '05-'06-'07-'10

Quote:

Originally Posted by Shaka

How about the rear fan, when does that come on? Can dealers or anybody get c7 service manuals on line now. Did you type all that?

Don't know. I'll try to find out. Service manuals for C7 aren't available yet to other than dealerships. The Helm Manuals are looking like Spring of next year. There will be paper manuals and an electronic version available.

LOL, no I didn't type it. I have the electronic service manual for the C6. It makes searching as well as copying and pasting entries much easier.

Oct 4, 2013 | 08:05 PM

#24

Chevy Cust Svc

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Joined: Mar 2010

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Quote:

Originally Posted by CaryKen

Just got home after a drive. Put the car in the garage and shut down the engine. The engine turned off and stopped cranking. But there was a VERY loud air whooshing noise coming from under the hood. Like a wind tunnel. I stood and waited for a while to see if it would stop, but it didn't. I got in and turned the engine on and off. The whoosh stopped. Hmmmm... That doesn't sound right.

Any engine geeks out there want to help me understand this?

CaryKen,

I apologize for the engine concerns that you are experiencing. I understand that you're seeking opinions of this matter, and wanted you to know that we're also here if you need additional assistance. Feel free to send us a message if needed.

Regards,

William R. (assisting Kelly & Marissa)
Chevrolet Customer Care

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