Rough idle, rpms bouncing - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Ykmaro · 03-29-2012, 10:21 PM

Help!! My car is idling rough, sometimes while shifting from from 2nd to 3rd the rpms flare up and then go back down. Also the rpms don't move up smoothly they go up in increments.. Like move up, stop, move up, stop. And if the car is in 5th or 6th it bogs and the rpms don't go up, they just bounce. What could this be?! A6 2011 2LT

SS Product · 03-29-2012, 10:31 PM

Check your blinker fluid

usafboy · 03-29-2012, 10:40 PM

mines done this for as long as i've owned it. just assumed it was normal but hopeing down the road a tune and TB and/or Black Iceolator can take care of this issue

allmotor · 03-30-2012, 04:16 AM

Not that this is your problem, but mine did that after I installed a ported FAST intake. Not so much while shifting, but if I put the car in neutral and coasted, the RPM needle would "hunt" 4-5k and at the bottom of the RPM range, would almost feel as if the car would stall. I was having some work done at JRE and Ted retuned it. Perfect now.

So the way I see it, this is a perfect excuse for you to install some bolt ons and get a tune!!

usafboy · 03-30-2012, 06:06 AM

Quote:

Originally Posted by doublefatty

Not that this is your problem, but mine did that after I installed a ported FAST intake. Not so much while shifting, but if I put the car in neutral and coasted, the RPM needle would "hunt" 4-5k and at the bottom of the RPM range, would almost feel as if the car would stall. I was having some work done at JRE and Ted retuned it. Perfect now.

So the way I see it, this is a perfect excuse for you to install some bolt ons and get a tune!!

true...but the problem i'm running into is my wife hates me buying car stuff bcus she doesn't understand how we are lol

yourWHAThurtz · 03-30-2012, 11:55 AM

I have the same issue with the rough/fluctuating RPMs while idle. Took it to the dealership and had them document it. If it causes any problems in the future, I know who'll be footing the bill...

Scalded Dog · 03-30-2012, 12:00 PM

The tach in my Silverado flutters around when I've got a battery or alternator issue. Is it possible that it's not the engine stuttering, but might be a tach or electrical malfunction?

BTW... my LT1 has never once showed anything but a smooth needle float in between any RPMs or any gears... so I would assume that it isn't "normal" to have fluctuations like that.

yourWHAThurtz · 03-30-2012, 12:15 PM

That was my first thought... It isn't terrible but it does seem to be irregular (not a consistent fluctuation). I've read some posts that said it's typical for the aggressive cams and bigger engine on the SS. Not sure if I trust that judgment so I had it documented at the dealer service center.

Chevrolet Customer Svc · 03-30-2012, 01:48 PM

YK, if you haven't modded your vehicle and you're having these issues I would suggest having your vehicle checked by your dealer. Hopefully they can get this taken care of for you. If not let me know and I'll do what I can to help you.

Jeff Morris, Chevrolet Customer Service

js19racer · 03-30-2012, 01:51 PM

Might be a bad or loose spark plug wire.

1hotchevy · 03-30-2012, 01:58 PM

could be as simple as a bad place to buy gas...bad gas can make it do that,, remember winter gas has ethonol in it

buzzy56 · 03-30-2012, 02:26 PM

Check to see that you do not have an air leak , manifold ,intake tube , hoses et'c..Found my engine idling erratically and jumping around last week. Warmed her up good and re tightened all of the intake clamps .The idle smoothed right out and has held steady since.

iHasCamaro · 03-30-2012, 03:06 PM

I had this happen to me on a different car after the oil from my intake got sucked onto my MAF sensor. Do these cars have a MAF or MAP? If they have a MAF you can probably clean it w/ electronics cleaner.

Ykmaro · 03-30-2012, 11:19 PM

I had a k&n CAI on and just out it back to stock so this might be why. I'll buy some MAF cleaner tomorrow and see. Problem wasn't fixed going back to stock

03-29-2012, 10:21 PM	#1
Ykmaro Drives: 2011 2LT/RS Join Date: Jan 2011 Location: Miramar, FL Posts: 100	Rough idle, rpms bouncing Help!! My car is idling rough, sometimes while shifting from from 2nd to 3rd the rpms flare up and then go back down. Also the rpms don't move up smoothly they go up in increments.. Like move up, stop, move up, stop. And if the car is in 5th or 6th it bogs and the rpms don't go up, they just bounce. What could this be?! A6 2011 2LT

03-29-2012, 10:31 PM	#2
SS Product Super Sport Productions Drives: 2010 Camaro 2SS, SIM Join Date: Dec 2011 Location: Winston-Salem, NC Posts: 129 View My Garage	Check your blinker fluid __________________ 2010 Camaro 2SS/RS SOLD

03-29-2012, 10:40 PM	#3
usafboy Drives: 2010 Silver SS/RS LS3 Join Date: Nov 2011 Location: Colorado Springs, CO Posts: 882	mines done this for as long as i've owned it. just assumed it was normal but hopeing down the road a tune and TB and/or Black Iceolator can take care of this issue __________________ 2010 Silver Ice Metallic Camaro SS/RS LS3 Mods...so far: resonator/muffler delete, tinted everything, '13 shift knob/boot, bowtie delete, PFADT sway bars, CAI intake, Hurst short shifter, JBA cat deletes, BMR trailing arms/outer bushings/steering rack bushing, Bo White ported TB. Rhino79 Dyno tuned...405 HP/399 TQ

03-30-2012, 04:16 AM	#4
allmotor movin' down the motorway Drives: Summiit White 2SS/RS/M6 Join Date: Feb 2010 Location: Palmetto Fl and Peabody MA Posts: 740	Not that this is your problem, but mine did that after I installed a ported FAST intake. Not so much while shifting, but if I put the car in neutral and coasted, the RPM needle would "hunt" 4-5k and at the bottom of the RPM range, would almost feel as if the car would stall. I was having some work done at JRE and Ted retuned it. Perfect now. So the way I see it, this is a perfect excuse for you to install some bolt ons and get a tune!! __________________ 417 stroker - Florida Speed and Power

03-30-2012, 11:55 AM	#6
yourWHAThurtz Drives: 2012 Camaro 2SS RS Join Date: Mar 2012 Location: Phoenix, AZ Posts: 57 View My Garage	I have the same issue with the rough/fluctuating RPMs while idle. Took it to the dealership and had them document it. If it causes any problems in the future, I know who'll be footing the bill... __________________ \| SunTek CXP 35% Tint \| Muffler Delete \| Gloss Black Vinyl Bow-Ties \| AAC 3156 Chrome Signal Bulbs \| AAC P13W Plasma LED DRL Bulbs \|

03-30-2012, 12:00 PM	#7
Scalded Dog Drives: 2011 1LT Join Date: Mar 2012 Location: Crestline, CA Posts: 3,029	The tach in my Silverado flutters around when I've got a battery or alternator issue. Is it possible that it's not the engine stuttering, but might be a tach or electrical malfunction? BTW... my LT1 has never once showed anything but a smooth needle float in between any RPMs or any gears... so I would assume that it isn't "normal" to have fluctuations like that.

03-30-2012, 12:15 PM	#8
yourWHAThurtz Drives: 2012 Camaro 2SS RS Join Date: Mar 2012 Location: Phoenix, AZ Posts: 57 View My Garage	That was my first thought... It isn't terrible but it does seem to be irregular (not a consistent fluctuation). I've read some posts that said it's typical for the aggressive cams and bigger engine on the SS. Not sure if I trust that judgment so I had it documented at the dealer service center. __________________ \| SunTek CXP 35% Tint \| Muffler Delete \| Gloss Black Vinyl Bow-Ties \| AAC 3156 Chrome Signal Bulbs \| AAC P13W Plasma LED DRL Bulbs \|

03-30-2012, 01:48 PM	#9
Chevrolet Customer Svc Drives: GM Vehicles Join Date: Jun 2010 Location: Michigan Posts: 9,327	YK, if you haven't modded your vehicle and you're having these issues I would suggest having your vehicle checked by your dealer. Hopefully they can get this taken care of for you. If not let me know and I'll do what I can to help you. Jeff Morris, Chevrolet Customer Service

03-30-2012, 01:51 PM	#10
js19racer js19racer Drives: 2011 Camaro 2SS/RS Join Date: Mar 2011 Location: Kernersville, North Carolina Posts: 73	Might be a bad or loose spark plug wire.

03-30-2012, 01:58 PM	#11
1hotchevy Scottish Knight Drives: RS/2SS 6 speed manual Join Date: Jan 2012 Location: Washington State Posts: 330 View My Garage	could be as simple as a bad place to buy gas...bad gas can make it do that,, remember winter gas has ethonol in it __________________

03-30-2012, 02:26 PM	#12
buzzy56 buzzy56 Drives: 2ss summit white L99 Join Date: Nov 2009 Location: paradise Posts: 1,115 View My Garage	Air leak ? Check to see that you do not have an air leak , manifold ,intake tube , hoses et'c..Found my engine idling erratically and jumping around last week. Warmed her up good and re tightened all of the intake clamps .The idle smoothed right out and has held steady since. __________________ OLD SCHOOL / NEW SCHOOL COOL

03-30-2012, 03:06 PM	#13
iHasCamaro Drives: Silver 2012 1SS Join Date: Mar 2012 Location: Oregon Posts: 367	I had this happen to me on a different car after the oil from my intake got sucked onto my MAF sensor. Do these cars have a MAF or MAP? If they have a MAF you can probably clean it w/ electronics cleaner.

03-30-2012, 11:19 PM	#14
Ykmaro Drives: 2011 2LT/RS Join Date: Jan 2011 Location: Miramar, FL Posts: 100	I had a k&n CAI on and just out it back to stock so this might be why. I'll buy some MAF cleaner tomorrow and see. Problem wasn't fixed going back to stock

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