HELP Vibration or Knocking Under Car

[johnnydee3]

There is a vibration or knocking sound coming from underneath me car. I was just wondering what could possibly be causing this. It is pretty loud. You can hear it from outside of the vehicle. HElp

 

[Jason94sport]

Cold be anything. Need more info. What conditions does it happen with? At speed, turning, idling? etc.

Could be bad RA bushings, or the cat converter heat shield is rattling. That's a common problem.

 

[johnnydee3]

Vibration

it is when I idle and I can sorta hear it when im moving.
i will check the cat heat shield. If that is it cant I guess take it off?

 

[rudypoochris]

Its the cat heat shield. Poke it while it is idling and it will shut up. Usually it needs to be welded or something.

 

[johnnydee3]

KNocking

Its like somethings knocking underneath my feet. And it is pretty loud

 

[rguy]

If it happens when you start moving, check the transmission mount.

 

[purple-x]

when i bought my ex it did the same thing, the knocking under my feet, but it also wandered A LOT and it ended up being the radius arm bushings and an alignment. . .about 60 bucks and a lot of labor if ur doing the bushings ur self

 

[melmer]

just curious if the knocking sound ya'll had was at slow speeds on uneven surfaces and bumps? I feel my knocking in my feet too.