Somewhat rough idle... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Push Rod · 11-13-2024, 09:02 PM

2011 Camaro SS with LS3. New to me. 25,000 miles. Slightly rough idle, causing volts to fluctuate, car to shake a bit, RPMs to fluctuate maybe 100RPM either way. Cleaned air filter, throttle body and MAF sensor. Perhaps a little better. Maybe.

Not bad overall just noticeable enough to make me think it is more than "normal."

Is this normal for this car? If not how have others solved it?

I tried to search for other threads but search function wouldn't work so easy on the new guy...

1JEWLDSSRS · 11-14-2024, 10:49 AM

Welcome. For one thing you should know, these LS engines DO have what is called the "LS shake", it is normal, but the volts and tach should not wander. Check your spark plugs and maybe run a bottle of the Lucas fuel injector cleaner through it, in the small clear bottle. That's what I use. Maybe that will help. Good luck!

11-13-2024, 09:02 PM	#1
Push Rod Drives: 2011 Camaro SS convertible Join Date: Nov 2024 Location: Georgia Posts: 1	Somewhat rough idle... 2011 Camaro SS with LS3. New to me. 25,000 miles. Slightly rough idle, causing volts to fluctuate, car to shake a bit, RPMs to fluctuate maybe 100RPM either way. Cleaned air filter, throttle body and MAF sensor. Perhaps a little better. Maybe. Not bad overall just noticeable enough to make me think it is more than "normal." Is this normal for this car? If not how have others solved it? I tried to search for other threads but search function wouldn't work so easy on the new guy...

11-14-2024, 10:49 AM	#2
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 12,250	Welcome. For one thing you should know, these LS engines DO have what is called the "LS shake", it is normal, but the volts and tach should not wander. Check your spark plugs and maybe run a bottle of the Lucas fuel injector cleaner through it, in the small clear bottle. That's what I use. Maybe that will help. Good luck! __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.