Squeek sound upon acceleration from slow speed?? what is it??

[23109VC]

Just recently I noticed a squeek sound when I accelerate from a slow speed.

I notice it mostly when teh top is down. it sounds like it's coming from the engine bay area or back of the car.. it's not somthing in the interior like a seat or something..

if i am going slow, say in a parking lot like 5mph and then give it gas, it makes a "squeek" for a split second, then it's gone.

it is not a constant noise..it's only there when the speed changes from slow to fast...when I hit the gas... i'm n ot mashing it to get it to do this.. i may only be giving it a marginal amount of throttle...but enough to get the car moving and there is the squeek..

i'm thinking a motor mount?? my car has 78k and the motor mount is original.

i have the 3k vibration... and I am under the impression that that is motor mount related...althohg I shoudl add that my car has ALWAYS had the 3k shudder since I've owned it, but this squeek is new... maybe the mount is wearing more..

any other ideas would ber appreciated..

it's not super loud, nor does it sound "bad"....i'm not worries something is about to blow up given the nature of the sound, but I do wonder what it is as it is a new one....

thanks guys!