6 Warning Signs of Cooling System Failure

At the moment you start up your car, your engine temperature begins a rapid rise. As long as your cooling system is healthy, you’ll have the mechanisms in place to regulate the heat. But if any part of your cooling system is malfunctioning, then your vehicle could be susceptible to overheating, which could cause significant engine problems. Here’s a look at six signs of cooling system trouble.


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If smoke starts emerging from under your hood, then it’ll be best to pull off the road, at which point you’ll likely want to add coolant/water.

High Reading on Temp Gauge

If your temperature gauge suddenly skyrockets, or incrementally creeps up into the red zone, then you’ll want to cease driving and call up a reputable mechanic who can help you figure out if your vehicle is safe to drive.

Decreasing Gas Mileage

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It’s within a certain range of temperature that vehicles attain maximum fuel-efficiency. If the engine temperature exceeds this range, then you could see a drop in gas mileage.

Low Coolant

In the event that your coolant level suddenly and mysteriously drops, then you’ll want to have a mechanic perform an inspection so the underlying issue is identified.

White Exhaust Smoke

White exhaust smoke suggests that coolant is being burned up within your combustion chamber. Whenever exhaust smoke appears to be off in color, it’s best to further investigate the matter.

External Coolant Leak

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From time to time, it’s a good idea to scan over the ground where your vehicle is regularly parked and check for evidence of automotive fluid leaks. Coolant is often identifiable by its bright green color, though it might be another color like pink or yellow.

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