2001 Ford Taurus I think there is a fault in my cooling sys

I own a 2001 Ford Taurus , a few weeks ago i had the engine coolant hose replaced that had a blow leak in it. It cost me 140 dollars to replace at the dealers. Now the engiine seems like it might have another problem in the cooling system , because when i was out running arrons with my taurus , the engine heat seemed hotter than normal ? and i noticed fluid under my car , the color is either transparent or reddish?? i think its engine coolant again but no ''check engine '' light or ''low coolant'' or anything signifying a over heated engine temp. I think it might be a faulty ECT sensor, i am also thinking about checking the water pump sense it hasnt been replaced yet that i know of... my question about that is - Where is the water pulley and water pump located? and the ECT sensor? i heard that the ECT sensor is somewhere on the intake manifold. im just worried about my car and the seriousness of the damage it might have underneath , ya know. thx!