Okay it's weird. My dad had got the car from a good friend of his. when he first was testing it out the first day it ran hot but when he cleared out the glove box it was fine....3 weeks later i bought it after him checking it out and 1 week after i got it....it ran hot on me going to my dads. now i had went like 20 to 30 miles one directiong sometimes longer. Well we figures since it has a bran new water pump and fans we changed the thermostat.....it was fine after that....Drove for about a week....and then on my way home ran hot on me again. coolant light never came on before this so there is no leak. ran hot so it boiled the water out.....okay someone stopped and helped us and we put water in it and temperature was fine the whole rest of the way home. the next day fine to...went a long distance to lafayette and back which is like 20 to 30 miles there and the same back. never ran hot back and forth to work for 2 days never ran hot....check the coolant levels before i leave and it was fine....on my way back home last night ran hot again on me.....after we put water in it was fine...today fine....can anyone help me.