Why Does A Car Over Heat? Causes And Prevention

11th July 2017 | ifa_admin

shutterstock_482465269Car engines work efficiently at the correct temperatures. A car will over heat when the engine temperature reaches a point where mechanical damage occurs. Generally, a temperature of more than 240 degrees Fahrenheit is potentially harmful. Steam and warning lights are likely to be the signs that your engine is overheating and requires attention. If not seen to in time, an overheated engine could need completely replacing which can cost a fair amount of money and time. Here we look at causes of overheating and actions you can take towards preventing it.

There are a few issues that can cause a car engine to overheat. Almost all are due to a lack of circulation but can be brought on in different ways.
Blockage – If there is a blockage in the cooling system then this can indirectly be a cause of overheating. If the coolant can’t circulate to the radiator then the engine will over heat. This can be due to a thermostat not opening when it should, the radiator being blocked by a mineral deposit or an object being caught in the cooling system.
Leaks In Cooling System – If there is a leak in the cooling system it causes the coolant level to drop and air to be sucked in and circulated. This can cause airlocks, which can’t be pushed through the cooling system meaning the system stops operating properly and the remaining coolant in the engine becomes very overheated.
Water Pump Has Failed – This is a common reason for overheating. Wear and tear can cause the bearing or impeller to break which leads to overheating shortly after.
Coolant Not Sufficiently Concentrated – This issue is more common in colder weather where temperatures frequently drop below freezing. If the coolant gels up it can cause blockages which can cause internal damage and require repairs.

Flush The Cooling System – This should be done at the interval recommended by the car manufacturer.
Fix Any Coolant Leaks – As soon as you become aware of a leak make sure a technician fixes it.
Change Engine Oil – This should be done regularly.
Keep An Eye On Temperature Gauge – If an ‘Engine hot’ warning light appears or the needle goes into the red you should pull over to prevent any further damage and have the issue looked at.

« Car Checks Before You Go On HolidayCan The Air Con In My Car Make Me Unwell? »