When Replacing A Radiator

Many reasons cause a radiator to fail.  Here are a few steps that will help prevent comebacks. 

1. Always ask yourself what caused the radiator to fail. Check all possible causes for the radiator deterioration.
2. Inspect radiator cap with tester. The radiator cap increases the boiling point of the coolant and ensures a constant level of coolant in the radiator.
3. Thoroughly flush the system including the heater core and overflow container. Any residue in the system may contaminate the new coolant and cause premature failure.
4. Install a new thermostat. Keeping the temperature right is what it’s all about… install the right temperature range thermostat.
5. Inspect hoses and install new clamps.
6. 50/50 mix of antifreeze and clean water (distilled water is recommended if water treatment in the region shows high signs of by-products). This mix will provide protection against boiling and freezing temperatures while providing maximum corrosion protection.
7. Once the work is completed, run the engine long enough for the electric cooling fans to turn on or inspect the mechanical thermal clutch fan for proper engagement.  Cooling fans are crucial for proper system operation and preventing cooling problems at low speeds. For electric cooling fans, see manufacturer specification in the shop manual as most vehicles use the on-board computer via the engine coolant temperature sensor to turn on the fans.
8. Ensure the drive belts, specially the one that runs the water pump is tight and in good condition.