# Buzzing sound on acceleration **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 30, 2008, 12:09pm UTC](https://community.cartalk.com/t/buzzing-sound-on-acceleration/16043 "2008-06-30T12:09:27Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![LazyPizowster](https://avatars.discourse-cdn.com/v4/letter/l/f4b2a3/32.png) [@LazyPizowster](https://community.cartalk.com/u/LazyPizowster)\ **Post date:** [June 30, 2008, 12:09pm UTC](https://community.cartalk.com/t/buzzing-sound-on-acceleration/16043/1 "2008-06-30T12:09:27Z")
I was in an accident and my left front tire was hit (2004 Subaru Impreza wagon - not turbo). The tire had to be replaced along with the suspension (and fender). I noticed a buzzing sound after the accident that I hadn’t heard before the accident. It’s coming from the front of the car and seems to be associated with depressing the gas pedal. It almost sounds like something hitting a fan. The auto body shop told me that the buzzing was coming from a loose muffler pan and is not associated with the accident. Has anyone heard of this, or could it be something else? I’m a little nervous driving it so I’d appreciate any help on this, thanks - ---
**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\ **Post date:** [June 30, 2008, 3:54pm UTC](https://community.cartalk.com/t/buzzing-sound-on-acceleration/16043/2 "2008-06-30T15:54:52Z")
Yes heat shields can rattle (probably for your catalytic converter) get it fixed so it can be eliminated as a possible cause of your buzz. ---
**Author:** ![LazyPizowster](https://avatars.discourse-cdn.com/v4/letter/l/f4b2a3/32.png) [@LazyPizowster](https://community.cartalk.com/u/LazyPizowster)\ **Post date:** [July 1, 2008, 12:09am UTC](https://community.cartalk.com/t/buzzing-sound-on-acceleration/16043/3 "2008-07-01T00:09:12Z")
good to know - thanks… ---
**Author:** ![GreasyJack](https://avatars.discourse-cdn.com/v4/letter/g/df705f/32.png) [@GreasyJack](https://community.cartalk.com/u/GreasyJack)\ **Post date:** [July 1, 2008, 1:05am UTC](https://community.cartalk.com/t/buzzing-sound-on-acceleration/16043/4 "2008-07-01T01:05:38Z")
This is a very common problem with Subarus. The spot welds on the heat shields I guess aren’t the best quality so they tend to come off when they get rattled around a lot, as Subaru’s outdoorsey customers tend to do on dirt roads. You just need to get it to a muffler shop and have them weld the heat shield back on.