Why Is My Engine Overheating? 5 Common Causes and How to Prevent It

Written By Joseph Storey

An overheating engine isn’t just inconvenient — it can cause catastrophic engine damage if ignored. Whether your temp gauge is spiking or you’re seeing steam from under the hood, here’s what might be going wrong:

1. Low Coolant

  • What it means: You may have a leak, or coolant hasn't been topped off in a while.

  • Quick fix: Add coolant if you're low, but have it inspected — a leak could be hiding.

2. Faulty Thermostat

  • What it means: The thermostat isn’t opening to let coolant flow.

  • Result: Your engine overheats even though coolant is present.

3. Bad Radiator Fan

  • What it means: The fan isn’t pulling enough air through the radiator at low speeds or idle.

  • Symptom: Temp gauge spikes mostly in traffic or when stopped.

4. Water Pump Failure

  • What it means: Coolant isn’t circulating, causing hotspots in the engine.

  • Watch for: Coolant leaks under the front of the engine, noise from the pump.

5. Clogged or Damaged Radiator

  • What it means: Your radiator can’t cool the coolant effectively.

  • What to do: Flushing or replacing the radiator may be necessary.

Don’t Ignore the Warning Signs

Overheating once is bad. Overheating repeatedly can crack the head or blow a gasket. If your vehicle is running hot, stop driving and call a professional.

TopTier Mobile Mechanics can come to you, diagnose the issue, and get you back on the road before it turns into a bigger problem.

Call now (810) 892-3430 to schedule an engine diagnostic.

Joseph Storey
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