Warning Signs of a Problem with Your Car’s Cooling System

Comfort Auto & Body Repair • December 29, 2025

Mechanic checks car's AC pressure with gauges. Blue and red gauges are held near engine components.

Your vehicle's cooling system plays a crucial role in maintaining optimal engine temperature and preventing overheating. A malfunctioning cooling system can lead to serious engine damage and costly repairs, making it important to alert the mechanic at the first sign of a problem. At Comfort Auto & Body Repair, we provide expert cooling system repair in the greater Portland, OR area. Here’s a look at five signs of cooling system trouble.


Rising Temperature Gauge

The temperature gauge on your dashboard provides a quick visual indication of your engine's temperature. If you notice the needle creeping into the red zone or consistently running hotter than usual, it's a clear signal that your cooling system is struggling. Ignoring this warning could lead to overheating and severe engine damage.


Low Coolant Levels

Coolant is a vital component of your cooling system. If you notice a sudden drop in coolant levels, it could be a sign of a leak. A leaking radiator, hose, or water pump can compromise the system's ability to regulate temperature effectively.


Strange Engine Sounds

Unusual sounds emerging from your engine could be a symptom of cooling system issues. For example, a faulty water pump could produce a grinding sound. Abnormal sounds that come from under the hood should always be brought to the mechanic’s attention.


Visible Coolant Leaks

Puddles or stains of brightly-colored coolant under your car are red flags. Addressing leaks promptly can prevent further damage and maintain the integrity of your cooling system.


Steam or Smoke Coming from the Engine

If you see steam or smoke rising from the engine compartment, it's an indication of overheating. Pull over safely and turn off the engine immediately to prevent further damage. Continuing to drive with an overheating engine can have major consequences, such as a warped cylinder head.


Cooling System Repair in Portland, OR

When you need auto repair in Portland, OR and the surrounding area, contact Comfort Auto & Body Repair at 503-610-2167. At our local auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call today to make an appointment!