How do you test an old Ford ignition coil?
How to Test a Ford Ignition Coil
- Remove the negative battery cable from the battery with a wrench.
- Locate the coil on your Ford engine.
- Remove the large wire from the center of the coil by pulling it straight out of the coil.
- Place the test leads from the ohmmeter on the side terminals, one on each side.
Is there a fuse for the ignition coil?
It is usually located in the fuse and relay panel beneath the hood, and is responsible for providing power to the vehicle’s ignition system, and some of the fuel system’s components. Usually a bad or failing ignition relay will produce a few symptoms that can notify the driver of a potential issue.
How to test Ford coil on plug ignition?
OK, to test the Coil-On-Plug ignition coils on your Ford car or truck, you need to know what each wire (circuit) does in the connector. Here are the circuit descriptions: Power (12 V) Circuit.
How can I tell if my ignition coil is damaged?
Testing the resistance across several terminals on your ignition coil is the only safe and accurate way to tell if the coils is damaged or not. Measuring the primary and secondary resistance requires an ohmmeter, and a digital readout is best if you have access to one.
What kind of readout do you need for ignition coil?
Measuring the primary and secondary resistance requires an ohmmeter, and a digital readout is best if you have access to one. Most ignition coils will fall into similar ranges when reading the resistance, but there can be some variation by manufacturer and coil type.
How do you remove a wire from a coil?
Remove the large wire from the center of the coil by pulling it straight out of the coil. Remove the retaining nuts and all the wires attached to the side terminals on the coil as well. Place the test leads from the ohmmeter on the side terminals, one on each side. It does not matter which lead goes where in this case.