Understanding the appropriate procedure and diagnosis codes for a particular study question is an important part of analyzing Medicare data. These codes are very specific and can change from year to year as new codes are added and others are discontinued.
There is no wear-out factor in the coil itself other than thermal cycling and the damage it may cause. Boots and wires do age, resulting in reduced insulation value over time. The key to correct ignition system diagnosis is to understand the details of how the system you are working on really functions. PAGE:
A lot of the fuel is going to the exhaust and is just being wasted, because the engine is not firing like it should. This causes low fuel economy, because the vehicle is not able to get as many miles on a gallon of gas as it did before having problems with the ignition coil. This is a bad ignition coil symptom that can affect the wallet. The ignition coil will eventually fail completely and the automobile will refuse to operate because the spark plugs will not fire at all. This could be dangerous if the car is in operation on the road and the coil fails, it causes the car to quit operating.