Loud vibrating noise on a Mazda 3?

Stephen Bricker

New member
Hi,

I own a 2005 Mazda 3 2.3 liter, and I've had a problem with it for a few weeks now.. When I accelerate, a loud grinding noise starts, like I tweaked my exhaust to make it sound like a race car. Only problem is, I didn't do anything to the exhaust. I can feel this grinding in on my feet, and in the seat. Then when I let off the gas the grinding noise goes in a downward shift sound. And when I'm sitting at a stop, the whole car vibrates horribly.

Does anyone know what might cause this problem?
I've checked underneath the car to see if there might be anything loose, but nothing obvious popped out at me.
 
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