Updated on my car. We took a ride to the grocery store and bank this morning and everything seem to be fine and the engine seem to very quiet as I mentioned on other post. Then, everything changed this afternoon when we were abt. to take the kids to the library. I got in the car w/ my two kids, close the door, and started the engine. My wife came out and knocked on my window and told me that wtf is that sound...I thought the dealer fixed the car and you just took it back last night.
When I exited my car w/ the engine still running and immediately heard a sound from the engine bay. It is a little hard to describe the sound, but diffinately bad sound to my ears

. What the worse was, even the ignition was shut off, I still can hear that engine sound for another 3-5 seconds.
I dropped her off at the dealer this afternoon and won't be able to hear back from the SA until Monday morning sometimes. This is really pissed me off. I thought everything is good and back to normal and it turned out to be worst than before it was fixed. Hopefully, it is a different issue. If it relates to the job that they just finished, I would be very mad.
I will keep you posted next week.