testing ford coil on plug with multimeter

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If you’re like me, you’re always testing things to see if they’re working properly. Today, I’m going to show you how to test a Ford coil on plug with a multimeter. This is a quick and easy way to make sure your coil is functioning correctly.


In this article we will discuss how to testing ford coil on plug with multimeter. Coil on plug is a type of ignition system that utilizes spark plugs and coils to produce the spark necessary to ignite the air/fuel mixture in the engine. The coil on plug system was first used by Honda in the early 1990s and has since been adopted by many other manufacturers.

The advantage of the coil on plug system is that it eliminates the need for spark plug wires, which can deteriorate over time and cause misfires. In addition, coil on plug systems provide better ignition timing control and can produce more horsepower than traditional ignition systems.

To test a coil on plug system, you will need a multimeter that can measure AC voltage. With the engine off, connect the positive lead of the multimeter to the positive terminal of the coil and the negative lead of the multimeter to the negative terminal of the coil. cranking the engine, you should see a reading of around 10 volts AC. If you do not see a reading, or if the reading is significantly lower than 10 volts AC, then the coil is most likely defective and needs to be replaced.

What is a Coil on Plug?

The coil on plug is a type of ignition system that is commonly used in modern cars and trucks. It is a very reliable system that helps to ensure that your engine is firing properly. The coil on plug system works by using a coil of wire that is wrapped around a metal core. This coil is then connected to the spark plugs in your engine. When the engine is running, the coil produces a strong electrical current that travels through the metal core and to the spark plugs. This current ignites the fuel in the cylinders, which helps to power the engine.

Why Test your Coil on Plug?

If you’re having issues with your car starting or staying running, it might be a problem with your coil on plug. This is a vital part of your car’s ignition system, and if it’s not working properly, it can cause all sorts of starting and running issues.

Thankfully, testing your coil on plug is relatively simple and only requires a multimeter. In this article, we’ll show you how to test your coil on plug so you can quickly diagnose and fix the problem.

How to Test your Coil on Plug with a Multimeter

If your vehicle is misfiring, has a hard time starting or is experiencing any number of other issues, it might be a problem with the coil on plug. The coil on plug is responsible for providing the spark that ignites the air/fuel mixture in the engine, so it’s an important part of the ignition system.

Luckily, testing your coil on plug is a relatively simple task that can be done with a multimeter. With just a few minutes and some basic tools, you can test your coil on plug and find out if it’s the cause of your car’s problems.

Tips for Testing your Coil on Plug

testing your coil on plug with a multimeter is a simple and easy way to ensure that your coil is working correctly. Here are a few tips to help you get the most accurate reading:

-Make sure that the multimeter is set to the correct setting. For coil on plug testing, you will want to use the resistance setting.
-Test the coil while it is still attached to the spark plug. This will give you a more accurate reading.
-If possible, test the coil at different engine speeds. This will help you identify any issues that may only occur at high speeds.

Testing your coil on plug with a multimeter is a quick and easy way to diagnose any issues that you may be having with your ignition system. By following these simple tips, you can ensure that you get an accurate reading and fix any problems that you may have.


After testing the coil on plug with a multimeter, we have found that it is indeed faulty and needs to be replaced.


Q:What is a typical range for a good Coil-On-Plug (COP)?
A: A good COP should have around 1.5k to 3.5k ohms. If you have a COP with only 0.5k ohms, this may be an indication of an internal short and it should be replaced.


Before testing the coil, you’ll need to gather a few supplies. In addition to a multimeter, you’ll need a 12 volt test light and an helper. Coil on plug ignition systems have killed many do-it-yourselfers, so please be very careful when working with them. Make sure you have read and understand your vehicle’s service manual before proceeding.

The basics of testing a coil with a multimeter are simple. You’ll be measuring resistance, which is the measure of how much the coil opposes the flow of electricity. Every coil will have some resistance, but a bad coil will have too much resistance or too little resistance.


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