# Noisy new catalytic converter **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [September 18, 2008, 12:32am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708 "2008-09-18T00:32:14Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![natallie\_a](https://avatars.discourse-cdn.com/v4/letter/n/7c8e57/32.png) [@natallie\_a](https://community.cartalk.com/u/natallie_a)\ **Post date:** [September 18, 2008, 12:32am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/1 "2008-09-18T00:32:14Z")
The check engine light was glowing on my Honda civic. I had it checked out at the Honda dealership and they told me I had a bad catalytic converter. I had a new one installed yesterday, but since then my car has been making a noise every time i accelerate. They told me that this would happen for a few days and then the noise would go away. Can someone advise me whether this is supposed to happen? or did they just do a bad job at it? iam worried !! HELP ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [September 18, 2008, 12:36am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/2 "2008-09-18T00:36:45Z")
There should be nothing making any noise after a catalytic converter is replaced. Take it back and tell them they screwed up somewhere. Tester ---
**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\ **Post date:** [September 18, 2008, 12:44am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/3 "2008-09-18T00:44:19Z")
I agree. There is no reason for a new catalytic converter to make any “noise.” Something is wrong. Make them fix it! ---
**Author:** ![andrew\_j](https://avatars.discourse-cdn.com/v4/letter/a/91b2a8/32.png) [@andrew\_j](https://community.cartalk.com/u/andrew_j)\ **Post date:** [September 18, 2008, 1:11am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/4 "2008-09-18T01:11:04Z")
It may be the heat shield is loose after the installation. Bring it back and have it addressed. ---
**Author:** ![pleasedodgevan](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pleasedodgevan](https://community.cartalk.com/u/pleasedodgevan)\ **Post date:** [September 18, 2008, 2:00am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/5 "2008-09-18T02:00:58Z")
We don’t worry too much about exhaust noise. By now they should be able to tell if there is an exhaust leak. ---
**Author:** ![meaneyedcatz](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/meaneyedcatz/32/692_2.png) [@meaneyedcatz](https://community.cartalk.com/u/meaneyedcatz)\ **Post date:** [September 18, 2008, 2:10am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/6 "2008-09-18T02:10:49Z")
What kind of noise? Is it a tinny vibration like a heat shield or maybe a high pitched noise that sounds as if rocks are rattling around inside the convertor? If the latter I would suspect the substrate inside the convertor is broken into pieces. ---
**Author:** ![natallie\_a](https://avatars.discourse-cdn.com/v4/letter/n/7c8e57/32.png) [@natallie\_a](https://community.cartalk.com/u/natallie_a)\ **Post date:** [September 18, 2008, 3:13am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/7 "2008-09-18T03:13:21Z")
Its a vibration - but its a bit loud. And it gets higher whenever i accelerate. If something in the converter were broken, wouldnt the check engine light go on? the car is running good, and the check engine light hasnt come on. so iam hoping whatever it is, is not a big deal. ---
**Author:** ![meaneyedcatz](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/meaneyedcatz/32/692_2.png) [@meaneyedcatz](https://community.cartalk.com/u/meaneyedcatz)\ **Post date:** [September 18, 2008, 3:46am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/8 "2008-09-18T03:46:12Z")
Sounds minor but they need to make it right. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [September 18, 2008, 10:32am UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/9 "2008-09-18T10:32:59Z")
Hey who cares why, they need to figure out why and how to fix it, it is there problem, don’t make it yours. Your problem is getting it back to them and make sure they fix it. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [September 18, 2008, 8:36pm UTC](https://community.cartalk.com/t/noisy-new-catalytic-converter/19708/10 "2008-09-18T20:36:14Z")
Its a vibration That sounds like a five minute fix and they should take care of it for free.