idle too low? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sfgiantsfan9 · 01-13-2010, 08:04 PM

Just took delivery of my camaro yesterday. Loving it and still getting used to it. One thing I noticed is when i start it up and its idling the car sort of vibrates almost like it's going to stall. It is a manual transmission. Idle is around 550. Is that about right? Is it supposed to kind of shake like that?

SSOOCH · 01-13-2010, 08:16 PM

It's normal.

DaveT · 01-13-2010, 08:17 PM

Feels good, doesn't it

sfgiantsfan9 · 01-13-2010, 08:42 PM

Haha ya it is kind of cool. Almost like shes a caged animal itchin to be released. Figured it was normal but just had to check. Thanks guys.

Brown5150 · 01-13-2010, 09:04 PM

Love it Love it... Put it in lanch mode and see what happens.

SlingShot · 01-13-2010, 09:13 PM

Must be a manual SS thing..... My LT auto idles around 1k when cold ....

O2BQIK · 01-13-2010, 09:21 PM

If you like that, try camming it. My '99 SS shook the window panes on my house when it was idling in the garage.

mikel441 · 01-13-2010, 09:54 PM

LS3 has a split duration/lift, plus a nice lobe centerline on the camshaft. Gives it a little shake. Perferctly normal. Enjoy!

Eski7399 · 01-13-2010, 09:57 PM

That was the first comment my wife made when she got inside. I told her to shut up, she's used to things vibrating. Her reaction?

MrRaZ28 · 01-14-2010, 01:27 AM

Quote:

Originally Posted by Eski7399

That was the first comment my wife made when she got inside. I told her to shut up, she's used to things vibrating. Her reaction?

*Mindz* · 01-14-2010, 02:27 AM

I love the little shake now and then. it's not enough to notice unless you sit there for a good while. For me it's a reminder of the torque this thing possesses.

Roger Ramjet · 01-14-2010, 05:51 AM

I love the shake but it's not the cam. The fuel injection system drops pulses to reduce idle emissions. Try raising the idle speed to 800 - sounds even meaner.

Russell James · 01-14-2010, 06:13 AM

It's the cam. Never heard of dropping injector pulses? The same engine with a truck cam idles dead smooth. The LS3 gets a more performance oriented cam that gives it a little rumble and shake.

Put a nice exhaust system on it with an x pipe (LT's even better) , and it will really sound sweet.

If it's brand spanking new, it will smooth out a hair after a few break in miles. When a motor is green it may not be the smoothest. As things like the rings seat in, the computer learns all of it's adjustments... compression across the cylinders will be more consistent and it will be a touch smoother. But this cam will always have just a slight idle shake. That's what makes it scream above 6 grand.

I know Victory motorcycles drop injector pulses to make them try to sound like a Harley, but never heard of a Chevy V-8 doing that.

Roger Ramjet · 01-14-2010, 07:58 AM

Dodge also drops idle injector pulses at idle on the Charger and Challenger Hemis. Idle emissions are measured by volume (parts per million). So, with all cylinders pumping air then dropping random fuel pulses the bad combustion gases go down.

01-13-2010, 08:04 PM	#1
sfgiantsfan9 Drives: Camaro 2SS/RS and 2001 Ford F250 Join Date: Oct 2009 Location: Tipton, CA Posts: 317	idle too low? Just took delivery of my camaro yesterday. Loving it and still getting used to it. One thing I noticed is when i start it up and its idling the car sort of vibrates almost like it's going to stall. It is a manual transmission. Idle is around 550. Is that about right? Is it supposed to kind of shake like that?

01-13-2010, 08:16 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	It's normal. __________________

01-13-2010, 09:04 PM	#5
Brown5150 #17,149 Drives: 2010 Camaro 2SS Join Date: Aug 2009 Location: Oakdale, Calif Posts: 125 View My Garage	Love it Love it... Put it in lanch mode and see what happens. __________________

01-13-2010, 09:13 PM	#6
SlingShot Drives: 2012 ZL1 - #670 Join Date: Jun 2009 Location: Seminole, Fl. Posts: 8,009	Must be a manual SS thing..... My LT auto idles around 1k when cold .... __________________

01-13-2010, 09:21 PM	#7
O2BQIK Drives: 1991 Camaro RS Join Date: Mar 2009 Location: Dallas area Posts: 596	If you like that, try camming it. My '99 SS shook the window panes on my house when it was idling in the garage. __________________ 2010 Camaro SS in black/beige: Sold. \| '91 Camaro RS: Still the dream car! '98 Camaro SS: Incon twin turbo. Sold \| '99 Camaro SS: Heads/cam/bolt-ons. Sold.

01-13-2010, 08:17 PM	#3
DaveT Drives: 2010 2SS CGM LS3 Join Date: Jan 2010 Location: SF Bay Area Posts: 236	Feels good, doesn't it

01-13-2010, 08:42 PM	#4
sfgiantsfan9 Drives: Camaro 2SS/RS and 2001 Ford F250 Join Date: Oct 2009 Location: Tipton, CA Posts: 317	Haha ya it is kind of cool. Almost like shes a caged animal itchin to be released. Figured it was normal but just had to check. Thanks guys.

01-13-2010, 09:54 PM	#8
mikel441 Drives: 2014 Sonic, 2010 Camaro SS Join Date: Jan 2009 Location: Gig Harbor, WA Posts: 2,453 View My Garage	LS3 has a split duration/lift, plus a nice lobe centerline on the camshaft. Gives it a little shake. Perferctly normal. Enjoy! __________________

01-13-2010, 09:57 PM	#9
Eski7399 Arizona All Gens Drives: 2SS/RS, M6, IO-Int Join Date: Jul 2007 Location: Surprise, Arizona Posts: 273 View My Garage	That was the first comment my wife made when she got inside. I told her to shut up, she's used to things vibrating. Her reaction?

01-14-2010, 02:27 AM	#11
Mindz E.B.A.H. Drives: you wild... Join Date: Mar 2007 Location: In the happy padded room wearing a jacket that makes me hug myself... Posts: 18,421	I love the little shake now and then. it's not enough to notice unless you sit there for a good while. For me it's a reminder of the torque this thing possesses. __________________ Blue Rush, 2010 SS [Car of the Week 3/22/2010] Traded in on...ZLZBUBB, 2013 ZL1

01-14-2010, 05:51 AM	#12
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	I love the shake but it's not the cam. The fuel injection system drops pulses to reduce idle emissions. Try raising the idle speed to 800 - sounds even meaner. __________________ History Camaro's: 83, 93, 95, 98, & 10.

01-14-2010, 06:13 AM	#13
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	It's the cam. Never heard of dropping injector pulses? The same engine with a truck cam idles dead smooth. The LS3 gets a more performance oriented cam that gives it a little rumble and shake. Put a nice exhaust system on it with an x pipe (LT's even better) , and it will really sound sweet. If it's brand spanking new, it will smooth out a hair after a few break in miles. When a motor is green it may not be the smoothest. As things like the rings seat in, the computer learns all of it's adjustments... compression across the cylinders will be more consistent and it will be a touch smoother. But this cam will always have just a slight idle shake. That's what makes it scream above 6 grand. I know Victory motorcycles drop injector pulses to make them try to sound like a Harley, but never heard of a Chevy V-8 doing that.

01-14-2010, 07:58 AM	#14
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	Dodge also drops idle injector pulses at idle on the Charger and Challenger Hemis. Idle emissions are measured by volume (parts per million). So, with all cylinders pumping air then dropping random fuel pulses the bad combustion gases go down. __________________ History Camaro's: 83, 93, 95, 98, & 10.

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