overheating at higher speeds and heat blows cold
2002 Jeep liberty overheats when I drive between 75 and 80. When i slow
down to between 65 and 70 the temperature drops back down to halfway.I
check the coolant level and it is fill. I believe it is the cooling fan on the back
of the radiator that is the culprit. Before this happened I change out the
heater core, thermostat, water pump, radiator and the hose due to it was a
used car and it was for my daughter to take to Maine for college. I wanted to
make sure she had no issues. The other issue the heat blows cold out of the
vents. I replaced the heater core as stated before and the blend door
actuator. After replacing it the heat seemed fine but then it started blowing
cold again, any suggestions for my two issues?