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Chevrolet K1500 Ignition Coil

Troubleshooting Problems with a Chevrolet K1500 Ignition Coil

The main role of the ignition coil is to take electricity from a 12-volt battery and pump it up to thousands of volts, enough to ignite the fuel in an engine and make it start running. The coil plays such an important role in starting and running the engine that any problem affecting the part could leave truck owners frustrated. Some common problems associated with a malfunctioning ignition coil include hard starting, engine misfire, and reduced fuel economy. You must identify and fix such problems early on to keep your vehicle running smoothly. Here are some common problems associated with a Chevrolet K1500 ignition coil:

Difficulty starting

Inspect the electrical wires running from the ignition coil to the distributor and check if these are damaged or broken. Replace these wires as needed. You can test the ignition coil with an ohmmeter as well to determine if it is approaching failure. Try checking both the primary and the secondary resistance. To check the primary resistance, connect the meter to terminals 1 and 15 and check the readings; a working ignition coil should get a reading of 0.5 to 2.0 ohms. To find out the secondary resistance, measure the high-voltage outlet directly; you should get a reading between 8.0 and 19.0 kiloohms. If you get readings far different from those given, it means your ignition coil is failing and that it must be replaced soon.

Engine misfire, rough idling, and reduced fuel economy

Both problems listed above could be caused by other malfunctioning components such as timing belts, fuel injectors, and spark plugs. Check these components first before turning your attention to the ignition coil. If you managed to slim the suspects down to the ignition coil and a spark plug, there is a simple way to find out which among the two is malfunctioning. Simply identify the cylinder that is misfiring and switch its sparkplug with a working one. If the cylinder stops misfiring, it means that the spark plug is defective; otherwise, the ignition coil is problematic. Just follow the steps highlighted above to zero in on the exact problem the coil is having.

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  • How to Keep Chevrolet K1500 Ignition Coil Working Properly 27 February 2013

    Thousands of volts of electricity are needed to start your pickup truck. Unfortunately, your 12-volt battery isn't up to the task. With the help of the ignition coil, the electricity from your battery gets pumped up to the right voltage, allowing your vehicle to start. To prevent any starting issue from cropping up, it makes sense to have the coils properly maintained. Here are some Chevrolet K1500 ignition coil maintenance tips you should know:


    Maintain the cables of the ignition coil.


    Check the ignition coil's wiring from time to time, especially if you suspect that it is malfunctioning. Damaged and broken ignition cables will shorten the life of the ignition coil. If there is not enough electricity getting to the ignition coil, it could significantly lengthen the charge time for the component. This could, in turn, damage the switching devices and the control unit of the coil. Damaged wires are also prone to causing short circuits, which can overheat and damage the ignition coil.


    Inspect the ignition coil occasionally for damage.


    The ignition coil is a sealed unit designed to keep moisture from entering. Corrosion from roads salt, damage from debris and vibrations, and improper use of jet nozzles during a carwash may damage the seals of the ignition coil or form cracks. Damage to the seals or to the body may allow moisture to enter. If the coils work while there is moisture inside of them, this could drastically its life. Before that occurs, be sure to inspect the ignition coil from time to time. This will allow to spot minor damages before they become a big issue.


    Clean the ignition coil.


    While not completely necessary, your ignition coils could benefit greatly from being cleaned occasionally. To clean the whole thing thoroughly, you may have to disassemble the unit to gain access to the coils inside. The coils should be cleaned with a generous spray of carb cleaner while all the other components should be wiped with a clean rag.


    Replace the ignition coil when necessary.


    There is no regular schedule for replacing the ignition coil. You just need to be alert if it starts to malfunction while taking note of any serious damage to the unit. If any severe performance issues arise, replace the unit before it becomes much of a problem.