With the blower motor control on five the a/c doesn't blow like its on five. i've noticed the electric cooling fans don't run very long or very strong. cut on and off real quick.
Your radiator cooling fans should run constant if ac is on. But if its not on they will only come on when engine temp rises and they will shut back off when temp drops back down to normal range. If car is not over heating I don't think there is a problem with them only coming on for a short period of time. That is if ac is off. Mine does the same.
www.youtube.com/watch?v=tcD-DCMAcSw -- with the blower. Have you changed your cabin air filter lately? That would cause it not to blow strong if its stopped up. View youtube video for instruction on how to replace it. Drive safe
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