Fuel Pressure Regulator
Fuel Pump
EGR Vale
Oxygen Sensor
Idle Air Control
MAP Sensor
Knock Sensor
Throttle Position Sensor
Mass Air Flowmeter
Crankshaft Position Sensor
Ignition Coil
Alternator
Starter
Water Temperature Sensor
Oil Pressure Switch
Window Power Switch
Power Window Regulator
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Ignition Coil
when the current is shut off (by the ignition module or the opening of the contact points in older ignition systems), the magnetic field causes a surge of high voltage (as much as 40,000 volts) in the coil's secondary windings. The high voltage passes to the distributor, then on to the spark plugs where it jumps the plug gap and fires the plugs (See Distributor, Ignition System and Spark Plugs). Coil problems include shorts or opens in the internal wiring, and cracks around the high voltage terminal.
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