6.2 ltr 2008 - engine idle
Former Vendor
Joined: Feb 2007
Posts: 2,572
Likes: 1
From: Austin Texas
Depends on how long after start up this occurs. The LS3 does have a very slight shake and that is normal. If you are refering just after start up, that is the catalytic heat up sequence. That can be tuned out and fixes the shake.
Safety Car
Joined: Feb 2007
Posts: 4,684
Likes: 107
From: Opelika Alabama
Let's see... you have 8 pistons going up and down at least 1.25 times a second each compressing fuel and air at a very high pressure and than igniting it like a bomb.. what would you think? got nothing else to worry about?
Team Owner
Joined: Sep 2000
Posts: 25,004
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Melting Slicks
Joined: Feb 2004
Posts: 3,131
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From: Sugar Land TX
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
Race Director
Joined: Sep 2007
Posts: 16,557
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From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I balanced a half folded $5 bill on my dash. Wouldn't that be 100 times more difficult?
To the OP, I've experienced a little idle shudder when coming to a stop. It takes a few seconds to settle down to smooth again. No big deal. But if yours never becomes smooth, then it could be vacuum leaks, misfiring, ect.
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Drifting
Joined: Mar 2007
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From: Perdido Key,Fl. Fl.
Thread Starter
5th Gear
Joined: Jul 2011
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Drifting
Joined: Oct 2006
Posts: 1,340
Likes: 6
From: Redmond WA
My 2011 has a idle that feels like a bit of cam lope. My wife noticed it and I said it was to let everyone in the car know that there's a big engine under the hood. She said that if that's the case, it works.
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
Go sit in a new Cadilac V8 car!
