sheet metal vibration

[schuylkill]

Any suggestions on how to pinpoint an apparent exhaust vibration, happens when a load is on at each shift. I can't see any obviously bad welds or missing hardware. This is a 2012 Elantra but with 78K and a rear ended by a semi in its history. There is also something rubbing it sounds like up front at right wheel when I make tight left at slow speed, like when parking, don't think it's related but maybe. Really bugging me. I pulled the calipers and re-greased the pins, that didn't help with the wheel noise. I have to look for rubbing I think for that one. But the vibration is really bugging me. I open only the front or rear passenger windows to try to determine if it's front or rear but can't tell.

 

[Doog]

Go drive it in circles slowly in a parking lot in both directions. Could be a cvj or wheel bearing going bad.

 

[gofast182]

Perhaps it's a loose heat shield and it just happens to get to a resonant frequency at that speed. I'd look for that first if you can safely jack the car up and get under there with a ratchet.

Is the wheel well trim secure on the right front side?

BTW schuylkill, I'm originally from Reading, it's not often you see that name so it stuck out to me!

 

[schuylkill]

So I installed a ss hose clamp on the long shield that's stitch welded to the exhaust pipe located behind the resonator. The buzz is gone though I still think I hear a very slight vibration. The shield has 2 welds near each end and crimping in the center. I put the clamp over the crimped area. Maybe I'll put on one more at a weld.

Where in NJ are you gofast, I grew up in Atco and was at Sally Star's restaurant on Jackson Rd last weekend while visiting the folks. Not far from the Atco Dragway.

 

[schuylkill]

Noise at the wheel was from the backing plate. I recently rotated wheels so I guess this somehow caused movement of plate. I don't understand how by cornering the car the plate contacts the rotor but apparently that's what was occurring. I pulled the plate away from the rotor and the noise occurred constantly, pushed it in and it went away.

 

[Rick in PA]

Start banging (pounding) on the exhaust system and listen for rattles. Could be from the muffler, perhaps one of the internal baffles broke a weld.