front passenger side noise when waiting for red light

[llzzccc]

I have a 98 camry LE V6. It is 136000mile

From last weekend, I notice there is a noise from front passenger side when I waiting for red light. I drove it to a quiet place and tested. I found it will have the noise if:
1. The car must warm up and drive for few miles
2. The gear must be in D or R. In P or N will not have the noise
3. Holding brake pad then I can hear the noise. If release brake and start to move, the noise gone.

I am afraid there is a problem with transmission.

Any one could give me any idea?

Thanks.
----------------------------------------------------------------------------------------------------------
Another thing, when the noise come out, if I hold the passenger side window switch, the noise gone. Or I turn the fan on, it will gone too. But, if the fan already on, it will still have the noise. It looks like if you use some of the electronical stuff, the noise maybe gone.
Except the engine mount, any other idea?
Thanks.
-------------------------------------------------------------------------------------------------------
It fixed.
The problem is come from the bottom engine cover. The nut was loss.
Hope it helps for other.

[pmesfun]

The transmission is on the driver's side.

Check the engine mount on the passenger side that looks like a dog bone.

[llzzccc]

Thanks for your answer.

I notice one thing, maybe this is normal.

When the gear switch from P to R or D, the Engine will have one visible move. Is this is normal or means something?

[llzzccc]

Another thing, when the noise come out, if I hold the passenger side window switch, the noise gone. Or I turn the fan on, it will gone too. But, if the fan already on, it will still have the noise. It looks like if you use some of the electronical stuff, the noise maybe gone.
Except the engine mount, any other idea?
Thanks.

[llzzccc]

It fixed.
The problem is come from the bottom engine cover. The nut was loss.
Hope it helps for other.

[pmesfun]

Nice.