vibration when in reverse and turning left on 96

[96coroll]

Hi there

I've got a 96 toyota corolla. When i'm in idle i don't hear a noise, but when i switch into reverse both at a stand still and rolling backwards i get this hard vibration. It also can be heard when making left hand turns.I had experienced this (minus the left had turn noise) with my 89 corolla and it ended up being the first hanger past the flew pipe which was missing. But for this car i've replaced this hanger and the noise still continues. The only other problem i've noticed were that the front nuts connecting from the manifold to the pipe were very loose. I've had tighten them up and it has reduced the noise a little bit. Only other signs of distortion are a crack in the heat shield around the manifold. And that the shield is rusted around all the nuts holding it in place.

I believe either the
- gasket from the manifold to the pipe
- heat shield
- manifold needs
needs to be replaced.

The worst case i would guess is the engine mounts.

Any ideas
Thanks

[94PrizmDD]

my guess is engine mount if its a vibration.