2010 LLT V6 ticking noise, runs rough - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

OnionBilly · 09-20-2024, 10:47 PM

Had some issues with my 2010 2LT V6 camaro (LLT) back in April but it was drivable after I changed the battery out.

All summer its had these codes
P2179 ( system too lean off idle bank 2)
P0101
P0420 catalyst system efficiency below threshold

This was an extremely hot summer in California and the coolant temps reached highs of 245 at times in July, but I never noticed any performance issues because of it.

The past month or so it had some ticking near the upper front of the motor, but I guessed it might just be an exhaust leak and would get to it eventually.

Today i noticed it wasn't accelerating as well and a block away from home almost died out at the stop sign.

Codes showed misfire in 1 and 5

Popped the valve cover over those cylinders and everything appears fine with no apparent wear. Coolant/oil looks clean. Timing chains are tight(I replaced recently) Any ideas?

Attached is a video with the ticking sound very apparent.

https://www.youtube.com/shorts/jVPJU1YK49M

https://www.youtube.com/shorts/jVPJU1YK49M

09-20-2024, 10:47 PM	#1
OnionBilly Drives: 2010 Camaro 2LT RS V6 Join Date: Dec 2023 Location: Sacramento area Posts: 6	2010 LLT V6 ticking noise, runs rough Had some issues with my 2010 2LT V6 camaro (LLT) back in April but it was drivable after I changed the battery out. All summer its had these codes P2179 ( system too lean off idle bank 2) P0101 P0420 catalyst system efficiency below threshold This was an extremely hot summer in California and the coolant temps reached highs of 245 at times in July, but I never noticed any performance issues because of it. The past month or so it had some ticking near the upper front of the motor, but I guessed it might just be an exhaust leak and would get to it eventually. Today i noticed it wasn't accelerating as well and a block away from home almost died out at the stop sign. Codes showed misfire in 1 and 5 Popped the valve cover over those cylinders and everything appears fine with no apparent wear. Coolant/oil looks clean. Timing chains are tight(I replaced recently) Any ideas? Attached is a video with the ticking sound very apparent. https://www.youtube.com/shorts/jVPJU1YK49M https://www.youtube.com/shorts/jVPJU1YK49M