How to Avoid Radiator Problems via a Highly Effective 3 Step Plan

avoid radiator problems

avoid radiator problems

One of the most important yet overlooked part of a car engine is the car radiator. Operating in conjunction with the thermostat & water pump, the thermostat plays a key role in the distribution of coolant & also in maintaining coolant temperature.

Thus when a radiator becomes faulty, the engine temperature increases in a rapid manner. This rising heat takes a toll on other engine parts, namely gaskets, hoses, water pumps & thermostats, significantly reducing the engine life in the process.

Hence, it’s essential to be aware of the most common radiator problems so that you can diagnose them early and avoid radiator problems from happening in the first place. So first, let’s check out the 4 most common radiator problems.

4 Most Common Car Radiator Problems

1. Coolant Leaks

Perhaps the most common radiator problem in existence, coolant leaks can be caused by radiator body rust or faulty hoses. These leaks can subsequently culminate in overheating of the engine, causing engine damage and subsequent extensive repairs. You can find out these leaks by routinely checking for coolant-like liquid below the engine.

2. Mineral Deposits

Over a period of time, mineral deposits can get accumulated in the radiator, causing it to malfunction and cause engine overheating. These mineral deposits basically restrict the coolant flow, making it difficult for the radiator to distribute coolant. If there aren’t any obvious radiator problems that you are able to detect, then internal buildup of mineral deposits could be the reason for the overheating of your car engine.

3. Rust Problem

Car radiators can get significantly affected by rust in the long run. A rusty radiator has the potential to overheat, causing severe engine damage over a period of time. This rusting can happen both on the interior & exterior side of the radiator. You can detect interior rust by checking out the colour of the coolant. If the coolant has a brownish colour, then that implies that there is interior rust in the radiator.

4. Overheating of engine

Itself a result of many other underlying radiator problems, engine overheating can be detected by unusual temperature gauge spikes. The reasons for overheating can be various but you can ascertain most of them by checking the coolant overflow tank. Additionally, one thing you need to remember is that overheating doesn’t inevitably point towards a radiator problem. It could just be the fact that the thermostat is stuck or the water pump might be faulty.

A 3 Step Plan to Avoid Radiator Problems

So those were the 4 most common car radiator problems. By now, you may well have realised the fact that all the above 4 radiator problems are very much interlinked. Hence, even one can trigger the other, eventually causing the final outcome which is significant engine damage.

So, here’s a 3 step plan that will enable you to avoid radiator problems and subsequently save tangible money that would otherwise be spent on repairs.

Carry out coolant flush after every 20,000 miles

To avoid rust formation and reduce the buildup of mineral deposits, it’s well-advised to flush the coolant after every 20,000 miles.

Monitor hoses & clamps regularly

It’s very much essential to routinely check for cracked or loose clamps, small holes or any other issue and address the detected problem as quickly as possible.

Devise & follow a weekly coolant check schedule

Make it a point to check the radiator coolant level as well as detectable radiator problems such as leaks, rust, etc on a weekly basis. Additionally, also make sure to have an eye on the engine temperature gauge while driving.


The above 3 step plan will help you avoid radiator problems that may otherwise take shape. Also, the earlier you identify radiator problems, the less comprehensive the repairs will be & the more money you will save on repairs. For an extensive list of common problems that can plague your radiator, check out our other blog:


If the radiator problem you have encountered is beyond repair & you need to replace the radiator, then you can get in touch with us at Cooline. Call 1-800-788-2122 during our operating hours or message us through the ‘Quick Contact’ on if you have any questions or would like to receive a quote.