When the starter starts to warm up, it creates a magnetic field which pulls the solenoid plunger forward and forces the attached shift yoke to move the starter drive. After which, its pinion gear will mesh with the engine's crankshaft flywheel and with the plunger completing its travel it will strike a contact. This prompts greater amount of current to flow from the battery to the starter motor. The motor will then starts to spin the drive while turning the meshed gears to provide power to the crankshaft. The crankshaft will in turn prepare each cylinder for the ignition. When the engine starts, the ignition key is released causing to break the starting circuit. When this happens, the solenoid's magnetic field will collapse while the return spring pulls the plunger back with the starter motor automatically shutting off and disengaging the starter drive.
The typical pattern of the function of the starter is cited above. Usually, when the starter is producing too strange noises, it could be associated to some defect. It could lead to the abnormal or slower turn over of the engine. If this is detected, turn to the expertise of the mechanic and let him check if the starter of your Ford vehicle. If this would need to be replaced, there is an availability of this in the market. Replacement Ford starter is usually with the same or near the quality of the original one installed. If you're going to be careful enough, you might just find the exact quality of the factory-installed starter of your vehicle. It will be just a matter of little patience on your part to scour the automotive market.