Increasing Idle - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Filiatrault9 · 05-16-2014, 02:09 PM

Hey Guys,

I was wondering if there are any risks associated with slightly increasing my car's idle. I know these cars have a rough idle in general, but sometimes at stop lights my idle flutters so much it feels like the car is just about to stall and comes back, so on and so on, and it always leaves me a little worried.

So I thought maybe increasing the idle slightly would fix my problem (I have a Diablo Tuner), just checking since I don't know much about tuning and what not.

Thanks !

i2disturbedSS · 05-16-2014, 02:20 PM

Do you have an aftermarket CAI? Have check the air intake/filter to see if secure or clean?
I'm not sure but I would think the stock lifters or cam would not like the higher idle-

Filiatrault9 · 05-16-2014, 03:13 PM

Ya I checked the CAI and everything seemed secure/ clean. I'll check again when it stops raining to make sure...

So no go on the idle increase then..

CamaroKid300 · 05-16-2014, 03:23 PM

could also be your MAF sensor.

Z28bryan · 05-16-2014, 03:24 PM

What RPM is it fluctuating at?

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Filiatrault9 · 05-16-2014, 03:25 PM

Right around 500, dipping to 400-ish.. hard to tell with the huge needle

Angrybird 12 · 05-16-2014, 03:31 PM

I had the same thing on my V6 after installing my CAI. I ended up getting a CEL indicating a lean condition. After inspecting it again I found the hose on the clean side of the PCV system was loose where it goes into the engine, leaking unmetered air into the engine... Fixed that and the CEL and idle problems quit. Check and double check for vacuum leaks too.

Filiatrault9 · 05-16-2014, 03:55 PM

Sounds good i'll give it a look!

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luis550 · 05-16-2014, 04:21 PM

i had this idle issue on my v6 after i got an oil change done at the dealership(free oil changes for life) and knew they had done something to cause the issue. seems they knocked the same hose angrybird is talking about lose. i fixed it and my car has been running fine ever since.

EmeryZ28 · 05-16-2014, 08:31 PM

I noticed this on my SS and it bothered me. Never seemed like it was going to stall, but just seemed too low at stop lights and a little rough. I increased it by 100RPM with my diablo tuner and now it idles nice and smooth at stop lights

pyroguy · 05-17-2014, 05:42 AM

Quote:

Originally Posted by Filiatrault9

Hey Guys,

I was wondering if there are any risks associated with slightly increasing my car's idle. I know these cars have a rough idle in general, but sometimes at stop lights my idle flutters so much it feels like the car is just about to stall and comes back, so on and so on, and it always leaves me a little worried.

So I thought maybe increasing the idle slightly would fix my problem (I have a Diablo Tuner), just checking since I don't know much about tuning and what not.

Thanks !

Is your Camaro a LS3 or L99? I have a similar issue with mine and it's a L99 and I'm curious to hear what you come up with as an issue. I keep griping about it and don't take it back to the dealer because I'm hoping someone here will eventually find a fix and save me the dealer diagnostic fee. Let me know how you make out.

Filiatrault9 · 05-17-2014, 05:46 AM

Mine is an LS3. I'm going to check out the CAI install later and make sure nothing is leaking etc. And if everything seems in order i'll increase the idle 100 rpm and see if it sorts it out or not. I'll report back after.

Filiatrault9 · 05-17-2014, 07:50 AM

Ok so I checked my CAI and all that for leaks, nothing seemed loose and I couldn't find any leaks. So I decided to increase the idle by 100 with my Diablo tuner. Let it idle for about 5 minutes or so afterwards and it seemed much more steady, no more dipping down. Hopefully doing so won't have any long term negative effects on the car... but for now i'm happy with it!

rdrfronty · 05-17-2014, 08:45 AM

I noticed the idle thing on my SS on the way home from the dealership last night. It idling right in the 450-475 rpm range, but does flutter a bit giving it a slight rough idle. Car is new - only 28 miles and no mods. I did notice the A/C kicked it up to about 550 rpm when it was on though.
No biggie I guess since my last car was cammed. But I think the low idle is responsible for me stumbling a bit on take offs. Almost killed it driving it off the lot, and I have been driving stickshifts for over 30 years along with 90% of all my miles driven in that time were stickshifts.
But I started figure out that it likely the 450 rpms. Any slight drop while letting the clutch out causes it to stumble or lug a little.
After a day I'm getting use to it and compensate by just reving it a little more than I would in other cars at take-off. Does pretty well like that.
I'll like do a few mods come August, getting at the same time. I will get them to idle it up about 100rpms then. Should help.

05-16-2014, 02:09 PM	#1
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Increasing Idle Hey Guys, I was wondering if there are any risks associated with slightly increasing my car's idle. I know these cars have a rough idle in general, but sometimes at stop lights my idle flutters so much it feels like the car is just about to stall and comes back, so on and so on, and it always leaves me a little worried. So I thought maybe increasing the idle slightly would fix my problem (I have a Diablo Tuner), just checking since I don't know much about tuning and what not. Thanks !

05-16-2014, 02:20 PM	#2
i2disturbedSS Drives: 2010 SS L99 IOM Join Date: Aug 2012 Location: CA Posts: 1,923	Do you have an aftermarket CAI? Have check the air intake/filter to see if secure or clean? I'm not sure but I would think the stock lifters or cam would not like the higher idle- __________________ 369rwhp/392rwtq "Spending money I don't have, to buy parts I don't need, to impress people I don't know!" -Jenkins

05-16-2014, 03:23 PM	#4
CamaroKid300 ace5.org Drives: 2017 ZL1 M6 Join Date: Apr 2010 Location: Atlanta, GA Posts: 6,142 View My Garage	could also be your MAF sensor. __________________ Stock...For Now.

05-16-2014, 03:24 PM	#5
Z28bryan Drives: 2014 Camaro 1LS Join Date: Jul 2008 Location: Ft. Walton Beach, FL Posts: 162	What RPM is it fluctuating at? Sent from my iPhone using Tapatalk __________________ 1981 Camaro Z28 (SOLD), 1987 Camaro (SOLD) 2000 Camaro (SOLD), 2002 Camaro Z28 (SOLD) ----------------- 2014 Camaro -----------------------

05-16-2014, 03:31 PM	#7
Angrybird 12 7 year Cancer Survivor! Drives: 17 Cruze RS, 07 G6 GT, 99 Astro Join Date: Dec 2007 Location: East Tennessee Posts: 21,547	I had the same thing on my V6 after installing my CAI. I ended up getting a CEL indicating a lean condition. After inspecting it again I found the hose on the clean side of the PCV system was loose where it goes into the engine, leaking unmetered air into the engine... Fixed that and the CEL and idle problems quit. Check and double check for vacuum leaks too. __________________ Cancer's a bitch! Enjoy life while you can! LIVE, LOVE, DRIVE... The Bird is the word!

05-16-2014, 03:13 PM	#3
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Ya I checked the CAI and everything seemed secure/ clean. I'll check again when it stops raining to make sure... So no go on the idle increase then..

05-16-2014, 03:25 PM	#6
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Right around 500, dipping to 400-ish.. hard to tell with the huge needle

05-16-2014, 03:55 PM	#8
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Sounds good i'll give it a look! Sent from my iPhone using Tapatalk

05-16-2014, 04:21 PM	#9
luis550 Drives: 2013 2lt Join Date: Sep 2012 Location: Midland,TX Posts: 240	i had this idle issue on my v6 after i got an oil change done at the dealership(free oil changes for life) and knew they had done something to cause the issue. seems they knocked the same hose angrybird is talking about lose. i fixed it and my car has been running fine ever since.

05-16-2014, 08:31 PM	#10
EmeryZ28 Drives: 2011 Camaro 2SS/RS LS3 Join Date: Aug 2013 Location: Tampa Bay Posts: 812	I noticed this on my SS and it bothered me. Never seemed like it was going to stall, but just seemed too low at stop lights and a little rough. I increased it by 100RPM with my diablo tuner and now it idles nice and smooth at stop lights __________________ 2015 Silverado Z71 6.2/2011 Camaro 2SSRS LS3/2014 Cadillac ATS 2.0T

05-17-2014, 05:46 AM	#12
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Mine is an LS3. I'm going to check out the CAI install later and make sure nothing is leaking etc. And if everything seems in order i'll increase the idle 100 rpm and see if it sorts it out or not. I'll report back after.

05-17-2014, 07:50 AM	#13
Filiatrault9 Drives: 2011 Syn Green 2SS Join Date: Oct 2012 Location: St-Jean, Quebec Posts: 43 View My Garage	Ok so I checked my CAI and all that for leaks, nothing seemed loose and I couldn't find any leaks. So I decided to increase the idle by 100 with my Diablo tuner. Let it idle for about 5 minutes or so afterwards and it seemed much more steady, no more dipping down. Hopefully doing so won't have any long term negative effects on the car... but for now i'm happy with it!

05-17-2014, 08:45 AM	#14
rdrfronty Drives: 2019 ZL1 1LE CRUSH Join Date: Jun 2013 Location: Texas Posts: 298	I noticed the idle thing on my SS on the way home from the dealership last night. It idling right in the 450-475 rpm range, but does flutter a bit giving it a slight rough idle. Car is new - only 28 miles and no mods. I did notice the A/C kicked it up to about 550 rpm when it was on though. No biggie I guess since my last car was cammed. But I think the low idle is responsible for me stumbling a bit on take offs. Almost killed it driving it off the lot, and I have been driving stickshifts for over 30 years along with 90% of all my miles driven in that time were stickshifts. But I started figure out that it likely the 450 rpms. Any slight drop while letting the clutch out causes it to stumble or lug a little. After a day I'm getting use to it and compensate by just reving it a little more than I would in other cars at take-off. Does pretty well like that. I'll like do a few mods come August, getting at the same time. I will get them to idle it up about 100rpms then. Should help.