For about a month now, my 2006 Accord Coupe V6 transmission (auto) has been making a rattling noise when I'm idling. The noise gets much louder and noticeable when the air conditioner is turned on also.

Other than that, everything seems to be working perfectly. There's no slippage and there's clean oil in the transmission also.

Does anyone know what the noise could be. I assume it's coming from the tranny, but I'm not positive.

(Btw the noise sounds like a slightly metallic click-click-click-click that gets faster and louder when the AC is on.)