2015 sxt, pentastar v6, just bought this car, it runs great but has a whining noise really loud when i first start it then gets lower.
The car sat for about 6 months, maybe the serpentine belt? A pulley? Alternator?

thanks for any info...

 

Completely normal. They all do it. Worse in the cold.

 

Is that everyone's opinion of the pentastar? Doesn't seem right, it sounds like ****...

 

As I said, Ours has made that noise for over 80,000 miles and the dealer has repeatedly told us it is complete normal due to the enormouse timing chain and thin plastic/aluminum timing chain cover.

 

My wife's makes the noise - 2017 AWD GT.