What might be causing a sheet metal, tinny noise when I accelerate after starting my car?

RCLEMENS

MEMBER
2011 HYUNDAI ELANTRA
17,000 MILES

When I start my car and back out of the driveway or drive out of a parking lot, my car makes a sheet metal or tinny noise when I accelerate. Once I am driving at a constant speed, the noise goes away. The noise seems to come from underneath the car, mostly on the right side. Recently, I had my car in for a # 3 service that includes inspection of the belts, exhaust, manifold, brakes. I am not sure if this noise was there before the service was done. It seems that my car needs to have been stopped for a while before start up. The noise seems to occur more often when accelerating after a right turn.

8 Replies

FIXITMR

MECHANIC
9,990 POSTS

May be exhaust system problem. Check any heat shields for looseness or bent.

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Friday, April 20th, 2012 AT 4:37 PM

RCLEMENS

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2 POSTS

If the problem is not the heat shields, what might the exhaust system problem be?

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Friday, April 20th, 2012 AT 4:48 PM

FIXITMR

MECHANIC
9,990 POSTS

Any exhaust holders are also capable of noise. But noises described over internet are pretty hard to translate into cause unless they are common enough to be well known.

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Friday, April 20th, 2012 AT 10:31 PM

MARYCORSELLIS

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1 POST

I too have a 2012 elantra. This happened to me 3 months after I purchased my car off the lot. It was the heat shield, they welded it on 3 separate occassions. Finally it could not be welded anymore so they removed it! That was over 8 months ago. They said the part is on 'national back-order'. I will need to call them to check on the status. The mechanic is trying to tell me that is not needed. Come on now, I seriously doubt they will install parts which are not needed!

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Wednesday, August 8th, 2012 AT 12:43 AM

JASONNET

MEMBER
2 POSTS

Thanks. I think this is what my new certified pre-owned 2014 Elantra is doing. In my case it's on the right rear and only when I turn right and the accelerator is down a bit. That somewhat tinny sound also sounds like a distant tinny car horn.

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Saturday, August 19th, 2017 AT 1:41 PM

KEN L

MASTER CERTIFIED MECHANIC
47,512 POSTS

Hello,

Is the noise coming from the front or the back?

Best, Ken

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Sunday, August 20th, 2017 AT 2:37 PM

JASONNET

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@Ken. I my case it's coming vaguely from the rear right. I don't know if it's audible with the windows rolled down. It's very quiet + distant with the windows rolled up.

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Thursday, August 24th, 2017 AT 7:03 PM

KEN L

MASTER CERTIFIED MECHANIC
47,512 POSTS

Can you do me a favor and while you hear the noise and are moving gently press the parking brake to see if the noise changes, if so then your pads are worn and need replacement. Here is a guide that will show you what you are in for when doing the repair.

https://www.2carpros.com/articles/how-to-replace-rear-brake-pads-and-rotors

Please let us know what happens so it will help others.

Cheers, Ken

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Friday, August 25th, 2017 AT 1:01 PM