Could be your timing belt.
Check the idler pully.
Same thing happened to my 2003, less then a year after I brought it. The AC unit was burned out a week later. Seems to be a problem with the KIA ac units, don't let them lie to you at the dealer about it being your fault!
Vacuum leak.
This vehicle is notorious for a "whining" noise. The slower you drive, the louder it is. At first I thought our power-steering pump was going, or the transmission was whining. Two mechanics told me it's normal. Just a quirk with Dodge/Chrysler products. I had that whining noise and it was the alternator making the noise through the radio. even when the radio is off. Just a thought.
yes
Dont understand your question because stereo speakers are normal speakers
70 dB is 10 times louder than 60 dB.
You may be hearing the fan clutch kick on, which is normal.
Outdoor setting is louder.
It is the idling sensor on top of the intake
It could be a sticking valve lifter. If you didn't hear it before, it should be investigated. Ticking is not normal.
Hot, idling in drive, 20 lbs.