An alternator is a small electric generator that is powered by a serpentine or alternator belt. Its purpose is to obtain AC, which is then converted to DC by some big diodes within the alternator. This DC is stored in the vehicle's battery and used to power all of the components. Since the alternator generates the energy that powers everything in a car, any fault with it might impact engine performance or, worse, result in a dead battery. If a faulty alternator results in a dead battery, this, unfortunately, could also lead to an MOT failure. The reason for this is that the MOT examiner will not be able to carry out the necessary legal checks required. Due to this, it is recommended to check MOT status of your car and book your car with your local mechanic to diagnose and repair the issue. If you go through your documents and check MOT history of your vehicle, most likely this was a reason for failure in the past. If this is the case, check to see if you have an...
Car repair, servicing and MOT centre.