My truck, which is 4x4, had some trouble starting this morning. It is cold here, at nights it gets to the low teens and the days are about high 30's low 40's. Anyway, it wouldn't turn over for about 5 minutes this morning and once it finally did it started to die until I gave it some gas. Once I had driven it around a bit it started up fine. My question is does this sound like something needs to be replaced, starter or spark plugs, or is it because of the cold weather? I hadn't driven or even started it for a few days but I am not positive if that would cause the problem, should I at least start it up everyday to keep it warm?