Signs of a Failing Radiator

Over time, different parts of the cooling system can begin to wear down. For a more general overview, read up on the most common cooling system problems.A few signs that your radiator specifically is having issues can include:

Leaking coolant:

Cracks or leaks in the radiator will cause coolant to appear on the ground underneath your vehicle. This can happen when your vehicle is parked or when you’re driving. If you notice this or low coolant levels, you might have a crack in your radiator.

Discolored coolant or sludge:

Coolant is usually a thin consistency and colored green or yellow. Rust and debris from a failing radiator might cause contamination in the fluid that can turn it a dark or rusty color. It also might become thicker and create sludge, which can prevent it from cooling the engine.

Overheating:

A vehicle consistently overheating could be a radiator issue, since the radiator is the way engine heat is removed.

Bent or damaged fins:

Airflow can get blocked to the radiator if the fins on it get bent or damaged. This can be caused by gravel hitting them while driving or if too much water pressure is used while cleaning them.