Car has slight stumble at idle? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

6DEAN9 · 02-17-2010, 08:55 PM

I have noticed that my car has a slight stumble at idle. I heard from someone that they noticed the same thing. Just wondering if this is normal?

SSOOCH · 02-17-2010, 08:57 PM

The LS3 idles around 500RPM. It's fine.

SSchase · 02-17-2010, 09:05 PM

mine does it on a cold start sometimes almost like its got a massive cam lol.

MEDISIN · 02-17-2010, 09:18 PM

1900 miles and it occasionally idles rough at a stop light. sounds mean as hell from the outside. hasn't died on my though!

caper · 02-17-2010, 10:40 PM

mine does as well. glad its normal.

6DEAN9 · 02-17-2010, 11:32 PM

Thanks to everyone. I was worried it was my car.

FANTA-Z · 02-18-2010, 06:30 AM

Yep mine does it too

BlackSunshine87 · 02-18-2010, 01:27 PM

Low RPM + 6.2L = Rumble in the Jungle!
As long as you don't have knock while driving your good.

Jeanius · 02-18-2010, 02:15 PM

Quote:

Originally Posted by BlackSunshine87

Low RPM + 6.2L = Rumble in the Jungle!
As long as you don't have knock while driving your good.

Is knock very noticeable?

reddevil · 02-18-2010, 03:28 PM

Quote:

Originally Posted by 6DEAN9

I have noticed that my car has a slight stumble at idle. I heard from someone that they noticed the same thing. Just wondering if this is normal?

I asked my dealers service tech and he said it was the cam on the v8's.

BlackSunshine87 · 02-18-2010, 03:42 PM

Quote:

Originally Posted by Jeanius

Is knock very noticeable?

The only time I feel it is when I'm sitting still, and yes, I noticed it at the first light I pulled up to after leaving the dealership.

SSRSLY · 02-18-2010, 03:45 PM

Quote:

Originally Posted by BlackSunshine87

The only time I feel it is when I'm sitting still, and yes, I noticed it at the first light I pulled up to after leaving the dealership.

That's not knock. GM put a pretty aggressive stock cam in the LS3 to pull 426 hp, and what you're feeling is what hot rodders commonly refer to as "camming." It's nothing to be afraid of folks, it's just another thing that makes these cars awesome.

ffrcobra_65 · 02-18-2010, 05:04 PM

not a stumble...just a cam lope you are feeling at idle. It is normal.

pk1225 · 02-18-2010, 05:09 PM

heh my brother, an old Pro Gas racer himself, commented on a "miss" in my idle. I thought it just sounded a little choppy, still sounds that way.

02-17-2010, 08:55 PM	#1
6DEAN9 Drives: 2010 2SS/RS M6 Join Date: Jan 2010 Location: Alta Loma Posts: 191 View My Garage	Car has slight stumble at idle? I have noticed that my car has a slight stumble at idle. I heard from someone that they noticed the same thing. Just wondering if this is normal? __________________

02-17-2010, 08:57 PM	#2
SSOOCH Camaro SL,UTs Drives: 2010 Camaro SS/RS #16429 Join Date: Sep 2006 Location: South Jordan, UT Posts: 7,358 View My Garage	The LS3 idles around 500RPM. It's fine. __________________

02-17-2010, 09:05 PM	#3
SSchase Drives: 2010 camaro SS/RS LS3 Join Date: Aug 2009 Location: North bay Posts: 325	mine does it on a cold start sometimes almost like its got a massive cam lol. __________________

02-17-2010, 09:18 PM	#4
MEDISIN Drives: 2011 CTS-V Sedan Join Date: May 2009 Location: Chapel Hill, NC Posts: 1,505 View My Garage	1900 miles and it occasionally idles rough at a stop light. sounds mean as hell from the outside. hasn't died on my though! __________________ 2012 - Present: 2011 CTS-V Sedan, A6, Airaid, Zmax TB and Tune by R.P.M. = 535 hp/503 lb-ft. 2009 - 2012: 2010 2SS RS IBM M6, MGW Shifter, BMR Trailing Arms/Tunnel Brace, Roto-Fab CAI, VMAX Ported TB, Kooks 6511-Complete (Headers, X-Pipe, Mufflers), dyno tuned by R.P.M. = 415 hp/412 lb-ft. "Not giving a f^k is truly the greatest luxury, and no luxury car gives fewer f^k's than a CTS-V." - Matt Hardigree

02-17-2010, 11:32 PM	#6
6DEAN9 Drives: 2010 2SS/RS M6 Join Date: Jan 2010 Location: Alta Loma Posts: 191 View My Garage	Thanks to everyone. I was worried it was my car. __________________

02-17-2010, 10:40 PM	#5
caper Drives: 2010 IOM 2ss/RS Join Date: Sep 2009 Location: SoCal, I.E. Posts: 1,545	mine does as well. glad its normal.

02-18-2010, 06:30 AM	#7
FANTA-Z Drives: 2010 SSRS Join Date: Mar 2009 Location: Louisville, KY Posts: 388	Yep mine does it too

02-18-2010, 01:27 PM	#8
BlackSunshine87 SoCal C5 Family Member Drives: 2010 Black/Black 2SS RS Camaro Join Date: Dec 2009 Location: San Diego, Ca Posts: 74	Low RPM + 6.2L = Rumble in the Jungle! As long as you don't have knock while driving your good. __________________ "Discovered by the Germans in 1904, they named it San Diego, which of course in German means a whale's ******."

02-18-2010, 05:04 PM	#13
ffrcobra_65 Account Suspended Drives: SuperCharged 2SS/RS IOM MN6 Join Date: May 2009 Location: CA Posts: 5,094	not a stumble...just a cam lope you are feeling at idle. It is normal.

02-18-2010, 05:09 PM	#14
pk1225 Drives: '68 SS396, '02 SLP SS, 2010 2SS/RS Join Date: Nov 2009 Location: Spring, Texas Posts: 80 View My Garage	heh my brother, an old Pro Gas racer himself, commented on a "miss" in my idle. I thought it just sounded a little choppy, still sounds that way.

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