Rattle coming from exhaust - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Fieryfight · 09-04-2017, 03:04 PM

So I have had this exhaust for around 3 years now and have noticed recently that it appears to have started rattling. I have checked the rear hangers and do not see a problem, when I started the vehicle with my head near the exhaust it sounds like it is coming from somewhere further up in the vehicle. I cant hear the rattle from the inside of the vehicle either. Obviously getting under this vehicle is not easy so any suggestions on where I should check would be appreciated.

Video of the issue: https://youtu.be/7gThj2i6iik

rtcat600man · 09-04-2017, 04:55 PM

Could be the heat shield is loose near the H pipe area.

I had a similar sound from the test pipe resonator that came with my headers, the guts were loose. I pulled that piece out and replaced with a piece of straight pipe.

Check all the connections too.

Fieryfight · 09-04-2017, 05:01 PM

Quote:

Originally Posted by rtcat600man

Could be the heat shield is loose near the H pipe area.

I had a similar sound from the test pipe resonator that came with my headers, the guts were loose. I pulled that piece out and replaced with a piece of straight pipe.

Check all the connections too.

I probably should have specified that it is an axle back and welded on instead of using a clamp. I will check the shield near the h pipe to see if it it loose.

Ventmaster · 09-06-2017, 03:12 PM

How many miles on the car? If no one has been under the car in a while and it has around 100K miles on it and the heat shields are stable, I'd say you've got a dead or dying catalytic converter.

They will often start to rattle (death rattle?) at the end of their service life.

Fieryfight · 09-06-2017, 03:18 PM

Quote:

Originally Posted by Ventmaster

How many miles on the car? If no one has been under the car in a while and it has around 100K miles on it and the heat shields are stable, I'd say you've got a dead or dying catalytic converter.

They will often start to rattle (death rattle?) at the end of their service life.

It has about 45,000 miles on it and the exhaust was done around 20-22,000 miles. Other than general maintenance nobody has been under it since the exhaust was originally done.

09-04-2017, 03:04 PM	#1
Fieryfight Drives: 2011 Camaro 2LT IBM Convertible Join Date: May 2013 Location: Cabot, Arkansas Posts: 146 View My Garage	Rattle coming from exhaust So I have had this exhaust for around 3 years now and have noticed recently that it appears to have started rattling. I have checked the rear hangers and do not see a problem, when I started the vehicle with my head near the exhaust it sounds like it is coming from somewhere further up in the vehicle. I cant hear the rattle from the inside of the vehicle either. Obviously getting under this vehicle is not easy so any suggestions on where I should check would be appreciated. Video of the issue: https://youtu.be/7gThj2i6iik __________________ ...........................................2011 2LT IBM Convertible

09-04-2017, 04:55 PM	#2
rtcat600man having FUN now 13.66@101 Drives: 2010 2LT IOM Join Date: Nov 2009 Location: Clarkston, Michigan Posts: 9,230 View My Garage	Could be the heat shield is loose near the H pipe area. I had a similar sound from the test pipe resonator that came with my headers, the guts were loose. I pulled that piece out and replaced with a piece of straight pipe. Check all the connections too. __________________ MY BUILD

09-06-2017, 03:12 PM	#4
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,869	How many miles on the car? If no one has been under the car in a while and it has around 100K miles on it and the heat shields are stable, I'd say you've got a dead or dying catalytic converter. They will often start to rattle (death rattle?) at the end of their service life.