Testing Autos: Know your car - Car care explained




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Leaf spring

Why do leaf springs squeak?

It's the problem many truck owners are well aware of. Leaf springs are known to squeak when driving over bumps and it's not always possible to get rid of the noise completely. Whether you are taking your truck to a repair shop of fixing it yourself, the key is to find the exact source of the noise.
Heating system in a car

How the heating system works in a car.

The heating system is connected to the engine cooling system and uses heat from the engine to warm up the cabin. There is a heat exchanger called a heater core built inside the vehicle HVAC system. The heater core is a small 'radiator' that is connected to the engine cooling system.



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