help me please

[Yimyar]

So....from my observations i see that i have a loose bearing in correlation with my alternator and i have a strange gargling noise coming from the bottom of my radiator....if anyone knows what to do about either of those...please help me.


Also, the other night i could not start my car when leaving the store..i would turn the key in the ignition and i would get the car to come on but when i let go of the key it would turn off. It would fire but i wouldnt get a crank. So then today i get my oil changed and i drave away and then my "low oil" light comes on, and it's never done that before after getting my oil changed, but the car didnt sound funny and the guages were normal, and i was on my way to autozone to pick up some antifreeze anyways, so i buy the antifreeze, come back to my car and this time the key wont even turn in the ignition, it's as if it was locked..very strange. If anyone has any input on this situation of mine, please help me.

[FunkZ]

New alternator.
Check coolant level in radiator and overflow tank. Gurgling noise is air in the system.
If key won't turn at all get a new key from the dealer or else it's the lock cylinder.
You're saying the key position turns from Run to Acc by itself? Or it's still in Run position but the key is loose in the lock? Either way, sounds like the lock cylinder.
I assume the low oil light went off after driving a short distance? If it's still on check the oil level.