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Problems with overheating engines

© WikiMedia (Wikimedia) Category:Centrifugal superchargers Category:Superchargers Category:Arm
© WikiMedia (Wikimedia)

A troubleshooting solution can be seen when you start the engine, turn your air conditioning on, if the cooling fan does not instantly activate then check the fan motor fuse, if the fuse is ok then you will have to check the whole of your electrical system.

If you do not feel confident that you can do that it would probably be best to get it checked by a qualified mechanic. If you feel you would like to fix it yourself, then you will need a wiring schematic, which you will find in your repair manual.

Trace the circuit through the relay components and the fuse, if everything after the tests are ok then the fan motor has failed and you will have to replace it. The biggest culprit of overheating is when the cooling fan has broken. The engine cooling fan clutch or the electric fan could be broken. The engine-cooling fan moves air through the radiator when your car is stationary or travelling at a slow speed. This air removes the heat from the coolant created by the engine, using the radiator as a conductor. When the cooling fan no longer works it causes the coolant to overheat which causes the engine to overheat. Listen for a noise like a whirring sound or signs of a leak. If there are any signs of this then the cooling fan clutch may need replacing. To find out if the electric motor cooling fan is working start your engine and spin the fan blade if it does not move and feels stuck then it will need replacing.

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