I went out to start the car this morning and while I was letting it idle for a bit I put the car in reverse and there was a sound coming from below my feet - maybe between the driver and passenger. I can't describe it other then the motor sounds like its running louder.

I heard it much louder when I first started up the car but it was a bit quieter when warmed up. I don't have a specific noise other then its louder.

The fluids are fine I checked those.

I haven't a clue.