A starter is an electric motor that initiates rotational motion in a vehicle’s internal combustion engine before it can power itself. As its name implies, the starter is responsible for the processes involved in starting vehicles up. It converts electrical energy into mechanical energy. The starter uses electricity from the battery to turn the crankshaft which gets the vehicle going.
An alternator is part of a vehicle’s charging system and produces electricity for many devices. A type of generator, the alternator transforms mechanical energy into electrical energy. It provides power to essential parts of the vehicle such as the engine fan, ignition coils, radio, air conditioning system and various parts of the fuel injection system. Although the vehicle’s battery supplies some electricity, most of the electrical mechanisms require the alternator’s steady stream of power.
An A/C Compressor is a pump used to draw in low- pressure refrigerant gas and compress it into a high-temperature high-pressure gas. A second purpose of the A/C compressor is to move the refrigerant through the system. There are various makes and types of A/C compressors used in automotive air conditioning systems operating on R134a. The internal design could be Piston, Scroll, Wobble Plate, Variable Stroke or Vane.
The distributor is the triggering system for your vehicle’s ignition system. It works like this: Every time a tang goes past a magnet on the distributor shat the distributor sends an impulse to the vehicle’s control module. This triggers the coil to fire an electrical charge through the rotor to the cap and out through the wires to the vehicle’s spark plugs.