so today i drove my car harder than usual..still not hard though like to 6k..

i came out of work. 4 hrs later. and when i started it up, it almost died after idleing for about 2 seconds, it was goind down to like 300 rpm's.. i had to give it gas to keep it going, then it smoothened out..

are these things linked? or is it just the cold ect?