Odd Sound After Turning Off SS

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Mar 15, 2012 | 11:38 PM

RBodeman

Thread Starter

Senior Member

Joined: 09-24-2011

Posts: 118

From: Long Island, NY

Odd Sound After Turning Off SS

About 6 to 7 seconds after turning off my SS I hear an odd sound of something dropping in the engine. It sounds like a plastic float. Happens every single time.

Any ideas of what that is?

Mar 16, 2012 | 12:12 AM

firemangeorge

Platinum Member

Joined: 12-06-2009

Posts: 11,721

From: Alabama

Normal. But I can't remember what it is. Someone will chime in with the answer.

Mar 16, 2012 | 12:34 AM

843de

Deceased

Joined: 06-30-2010

Posts: 25,739

From: Kannapolis NC

Could it be the blend door in the dash flopping closed once the vacuum bleeds off?

Mar 16, 2012 | 12:35 AM

IgottaWoody

Senior Member

Joined: 01-13-2008

Posts: 4,708

From: Washington State, where it rains

Normal....sounds like a metal ball dropping....probably a valve or maybe a check valve

Mar 16, 2012 | 12:49 AM

jmm121783

Senior Member

Joined: 01-16-2012

Posts: 167

From: Detroit

To me it sounds like a clicking coming from the motor. Maybe it has something to do with the high pressure fuel pump/direct injection?

Mar 16, 2012 | 06:53 AM

firemangeorge

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Joined: 12-06-2009

Posts: 11,721

From: Alabama

Quote:

Originally Posted by jmm121783

To me it sounds like a clicking coming from the motor. Maybe it has something to do with the high pressure fuel pump/direct injection?

That noise is a different one than the OP is asking about. His noise is the single,light thump,or bump. It is an SS only noise. Turbo related. I think something vaccumm related. BOV maybe?