wierd noises when cold start

[BiGSnOOpDoGG]

ok tonight I was starting up my car after work, and it started making like a vaccum noise, an mabby some grinding like noises, then it sounded like something came loose an the noise stopped:???: then it ran fine like nothing happoned.It has never done this before. Also I thought I would mention it is about 0 degrees outside an -15 wind chill. If this has happoned to anyone else PLEASE let me know. Personally I think it might just be to damn cold out side. Thanks for any help.

[nineteen88ga]

I never had any finky noises like that come from mine. The only cold start up noises I get happen when I put the defroster on full blast aftr the car has been sitting for a few days, but they only last a second or to....more than likely the blower motor or something like that.

[BiGSnOOpDoGG]

also something I thought of mabby my antifreeze is old an it froze up, cuz thats what it sounded like. Today it was warmer, an it started up just fine with no noises. So mabby I should flush my cooling system.