Moaning noise after completely stopping

[Bikerboy89]

If I drive a decent distance (20+ miles maybe) and come to a stop and put my auto transmission in park I hear an odd groaning/moaning sound from the front engine bay. Maybe the passenger side but I'm not positive. If I put it in Drive again immediately and back to park it does not do the sound again. I'm gonna try to record it next time. Any ideas?

[bob225]

is it like a electric motor spinning down ? first off check your cabin filter

[Bikerboy89]

Okay will do. It's hard to describe the sound. I sounds like a constant sound though for a couple seconds then goes away.

[Bikerboy89]

Video of it. It's at 0:04-0:07 sec then it stops. It did it before I installed the inverter you see in the floor. https://youtu.be/fuiYlBdU-bk

[tmontague]

how is your trans fluid level?

[Bikerboy89]

It’s level is fine but it is dirty

[bob225]

I cant quite make that out, it could be the fan in the radio spinning down

[Bikerboy89]

Okay this seems to be connected with the AC. If I don't run the air conditioning at all I do not hear this sound when I stop and put the car in park. Doesn't seem to be anything serious.

[kevinj93]

Quite likely the electric cooling fan for the radiator and AC condenser. Depending on conditions, this can be running at high speed, particularly when you are stationary.

[bob225]

Changed your cabin filter lately ?