Rattling noise when in drive but disappears in neutral?

[oblivionnewtonjohn]

I've noticed for some time I have a rattling sound coming from the center dash/transmission tunnel area when in Drive, but disappears when I place into Neutral? Torque converter?

 

[tommudd]

I've noticed for some time I have a rattling sound coming from the center dash/transmission tunnel area when in Drive, but disappears when I place into Neutral? Torque converter?

Could be a great number of things, one guy came to my place with a rattle and it was cat heat shield rattling in drive, another it was a piece of metal that was up near the motor rattling against the firewall.
Have someone sit in it, hold the brake and climb around under and over it , you can track it down

 

[oblivionnewtonjohn]

I'll give it a go, thanks for the suggestion Tom.