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Maintenance · July 23, 2024

Car Overheating? What to Do (and What Not To)

If your temperature gauge climbs into the red or a warning light comes on, turn off the A/C, turn the heater to full to draw heat from the engine, and pull over safely as soon as you can. Switch the engine off and let it cool — never open a hot radiator or coolant cap.

Cars on lifts inside the Neal’s Garage repair shop in Durham

What to do, step by step

  1. Turn off the A/C to reduce the load on the engine.
  2. Turn the heater and fan to full. It’s uncomfortable, but it moves heat away from the engine.
  3. Pull over somewhere safe and switch the engine off.
  4. Don’t open the cap. A hot cooling system is under pressure and can spray scalding coolant.
  5. Call for help if the gauge was in the red, you see steam, or the car won’t stay cool. Our towing partners run 24/7 — see our towing page.

Why cars overheat

The cooling system relies on a mix of water and coolant circulating through the engine and radiator. Over time that coolant becomes polluted and loses its protective properties, which can clog the system and make it less efficient. Leaks, a failing thermostat or water pump, a blocked radiator and a faulty fan are other common causes.

Neal’s Garage front door, Est. 1950, open Monday to Friday 8 AM to 5:30 PM
Our front door — open Monday to Friday, 8 AM to 5:30 PM.

Why it matters

Driving an overheating engine can cause serious and expensive damage. Pulling over early is almost always the cheaper choice.

How to prevent it

  • Have the coolant serviced on schedule — we recommend every 30,000 miles. See fluids flush.
  • Watch for coolant puddles, a sweet smell, or the gauge running higher than usual.
  • Let our free multi-point inspection check hoses, belts and fluid levels at every service.

Hot weather and stop-and-go traffic make overheating more likely, so it’s worth checking the cooling system along with the A/C before summer — see getting your A/C ready for summer.

Call 919-286-1167 or schedule an appointment — we’re open Monday to Friday, 8:00 AM to 5:30 PM at 1907 West Markham Avenue, right off Ninth Street.

Frequently asked questions

Can I keep driving if my car is overheating?

It’s best not to. Pull over safely, switch the engine off and let it cool. Driving an overheating engine can cause serious damage.

How often should coolant be serviced?

Neal’s Garage recommends a coolant service every 30,000 miles, alongside your manufacturer’s schedule.

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ASE-certified mechanics serving Durham, NC since 1950. Book online or call 919-286-1167 — Mon–Fri 8:00 AM – 5:30 PM.

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