Overheating problem

The radiator being full bears good tidings. It is not the head gasket problem. Most probably it would be the cooling fans, attached to the radiator.

When A/C is turned on, ensure both fans are turning.

The gasket in not a problem as long as there are no leakages at that area.

The radiator/condenser fans should be side by side, unless one is missing, if not you should see 2.

Is the big fan working?

Ok, lets go through it again. I need to know the exact conditions under which the overheating occurs.

1. Driving condition : slow traffic, highway, uphill, high speed etc.

2. Time lapse after starting engine before overheating starts.

3. After temperature reading increases, is there any condition under which the temperature reduces, other than stopping engine?

4. Check the big fan, ensure the fan blades are turning in the right direction.

5. When engine is cold, remove radiator cap, how is the coolant level?

6. Are you still having coolant losses issues, from radiator and recovery tank?

Turn the A/C off and wait for the fan to staop. As it is stopping, you should be able to see which direction it is turning.

Symptoms indicates inefficient cooling, heat is building up as you speed up.

Possible causes are :

1. Clogged radiator. Some of the fins inside the radiator is clogged thereby not allowing the coolant to be cooled sufficiently before it reenters the engine. Radiator core can get plugged when different brands/types of coolant are mixed causing chemical reactions.

Check the external fins of radiator for clogging due to mud, flies or leaves.

2. Partially stuck thermostat. This prevents coolant from flowing efficiently allowing heat to build up.

3. Clogged water passages. Check for kinked lower hoses, clogged coolant pipes.

4. Weak water pump. Could be a quality problem since it is rather new.