How to stop the whining noise in Chrysler 300 2004 engine while on

a whining noise sounds like a power steering pump going shut

Replace starter and/or solenoid.

check your power steering fluid level. when level gets low low the pump will start to make noise, also in colder weather the fluid becomes thicker and if the pump is starting to fail it will create noise also,

Noises are very hard to diagnose without hearing them. Typically, if it was a belt, the pitch would change with RPM of the engine. Whining noises can sometimes be attributed to an idler pulley, alternator, power steering or waterpump bearing going south.

check the belt tensioner.

2006 Sebring Convertible - Transmission Codes - P0700, P0720, & P0731....
2006 Sebring Convertible, started while driving around town - transmission did not want to shift and CEL came on. Stopped, checked transmission fluid and looked for anything obvious. All fluids good, nothing obvious. About 5 miles from home, drove back roughly 15-20 mph. Only other issue that had came to mind was the alternator had been making a whining noise for some time, probably 3 months or so - had mentioned to wife that we should replace it before it completely failed. Found one reference on the internet that the alternator could cause weird electrical conditions / interference if bad - leaking voltage back through ground. Thinking the alternator likely needed replacing anyway, I replaced it and cleared codes - all issues were solved - no more alternator whining and all transmission issues resolved. Replaced alternator on Sept 9, 2019 today is Sept 12, 2021 and still going - I think its safe to say the alternator was the culprit in this instance.

If the noise increases if you rev the engine suspect the serpentine belt. This would be more of a screech than a whine. The noise would be more pronounced on a moist morning. It comes from the belt slipping or being misaligned. Try a GoodYear Gaterback belt as a replacement. It has grooves cut into it to reduce noise. Be sure your tensioner is working correctly. Also, the starter can make a noise if it does not disengage properly.

Oil dipstick has nothing to do with whining noise

the whine you hear is the trans pump, chrysler vehicles take a special fluid most atf bottles will say if they are chrysler recommened, there is a additive you can get to

If it gets worse when turning the wheel at a stop, then it's the power steering pump. Could be the power steering fluid also. Check your belts for wear or damage. The idle pulley will make a constant noise, sometimes whining sometime screeching. To check idler pulley it is best to remove belts.