new engine and torque squeal from tranny

us had a new engine from jaspers place in my my mustang 5.0 and new torque ,, they started her today and theres a squeal at idle that is comming from the transmission have any ideas y? when driving , she runs smooth. engine light came on have to get and air control valve which will be put in tomorrow im so exicted but this squeal makes me want to cry help :crying:

Does it have Automatic or standard shift?

its auto

I would check the bendix on the starter it may be sticking. Something must be rubbing and the installer should repair the problem.

thanks for the reply the whole time i thought it was the trannie and it was the vacum engine was building up pressure

still havent found a way to stop the squeal whining nosie when u loosn the dip stick it quites down.