Cooling System

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Your vehicle’s cooling system plays a crucial role in maintaining engine temperature, especially in Arkansas, where sweltering summer temps and high humidity are a constant challenge. Without a healthy cooling system, that heat doesn’t go away. Instead, it builds up, damaging engine components, warping heads, and even causing total engine failure.

Whether you’re stuck in summer traffic or heading out on a long drive, your radiator, water pump, thermostat, and coolant must work seamlessly together to prevent engine overheating and long-term damage. At CMS Auto in Conway, we offer full cooling system diagnostics and auto repairs to keep your vehicle running reliably.

Many car owners forget about the cooling system until a problem arises — but maintenance is key to catching early signs of failure and avoiding bigger repairs. Our technicians inspect every component of your cooling system, explain exactly what’s going on, and fix it right the first time.

Coolant Leak Inspection

A coolant leak can start small but quickly escalate into a serious issue. If you notice puddles under your vehicle, rising engine temps, or a sweet smell under the hood, it’s time to bring your vehicle in. We use advanced pressure testing to locate even the smallest leaks in:

• Radiator hoses and clamps
• Water pump seals
• Heater core and connections
• Head gaskets

Catching a coolant leak early can save you from expensive repairs down the line.

Coolant Flush

Over time, coolant breaks down and loses its ability to regulate temperature and prevent corrosion. A coolant flush removes old, contaminated fluid and replaces it with fresh coolant, ensuring your system stays clean and efficient.

You should consider a coolant flush:

• Every 30,000 to 60,000 miles (check your owner’s manual)
• If your coolant looks rusty or discolored
• After major engine work

We use the manufacturer-recommended coolant type for every vehicle, including brands like Toyota, Ford, Honda, and BMW.

Thermostat Replacement

A faulty thermostat can stick closed or open, causing erratic temperature readings or full-blown overheating. If your heat takes forever to work, or your gauge fluctuates a lot, your thermostat might be failing.

Replacing your thermostat is a quick and affordable fix that protects your engine from severe damage. At CMS, we replace your thermostat with a high-quality OEM or equivalent unit and ensure it opens and closes at the right temperature range for your car.

Radiator Replacement

Your radiator is the heart of your cooling system — it dissipates the engine’s heat and circulates coolant back through the engine. If it’s clogged, leaking, or corroded, it can’t do its job properly.

Common signs you might need a new radiator:

• Repeated overheating
• Rust or corrosion on the radiator fins
• Coolant constantly low
• Steam from the engine bay

We inspect for physical damage, internal clogging, and radiator cap issues. Radiator repair may be possible in some cases, but if your radiator is failing, we’ll install a new unit tailored to your vehicle’s make and model. We also refill your system with the right coolant blend and test for proper operation before you leave.

Water Pump

Your water pump circulates coolant through the engine and radiator. If it fails, your vehicle can overheat in minutes. A failing water pump often makes a whining or grinding noise and may leak coolant near the front of the engine.

Replacing a water pump involves accessing belts, gaskets, and sometimes timing components. Our technicians handle it all with precision — and we only use high-quality parts that meet or exceed OEM standards.

If you hear unusual noises or see coolant near the passenger side of your engine bay, come see us before the damage spreads.