What Causes Ignition Coils to Go Bad?

Answer

Ignition coils are often subject to high amounts of voltage in short amounts of time. Like any mechanical part, wear and tire degrades their quality over time. Sudden heat or cold can cause them to crack, too.
Q&A Related to "What Causes Ignition Coils to Go Bad?"
The typical cause of problems for ignition coils would be corrosion from air flow or exposure to any chemicals, lubricants, solvents, or cleaners in common use around the motor. The
http://wiki.answers.com/Q/What_causes_an_ignition_...
They can go bad for many reasons, but the only way to check them is to check the resistance on them wit an ohmmeter
http://www.fixya.com/cars/t14414346-causes_ignitio...
.i bet the fault lies in the oxy sensor not the coil.
http://answers.yahoo.com/question/index?qid=200902...
The ignition coil is an important component of the engine start-up process. While this mechanical component tends to have a long life, there are several conditions that can contribute
http://www.ehow.com/list_5954461_causes-ignition-c...
2 Additional Answers
The main things that can cause ignition coils to go bad is, heat, and moisture. When they start going bad, your car will have a miss, and you will need to take it to a local auto parts store for a replacement.
There are several reasons an ignition coil could go bad. Constant use over time, they can crack in extreme heat or cold, bad spark plugs, poor isolation and some may just be faulty coils.
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