See Figures 1 and 2
This test requires the use of an ohmmeter. When using this tool, make sure the scale is set properly for the range of resistance you expect to encounter during the test. Always perform these tests with the ignition OFF.Primary Resistance
In order to check the coil primary resistance, you must first disconnect all wires from the ignition coil terminals. Using an ohmmeter, check the resistance between the positive and the negative terminals on the coil. The resistance should be:
If the resistance is not within these tolerances (range), the ignition coil must be replaced.
In order to check the coil secondary resistance, you must first disconnect all wires from the ignition coil terminals. Using an ohmmeter, check the resistance between the positive terminal and the coil wire terminal. The resistance should be:
If the resistance is not within these tolerances (range), the coil must be replaced.
REMOVAL & INSTALLATION
See Figures 3 through 8
Although it is easier to access the internal coil with the distributor removed, it can be changed without removing the distributor. A selection of various short screwdrivers will be required for access to the screws.
- Disconnect the negative battery cable.
- Remove the distributor cap with the wires attached and set it aside.
- Remove the rotor and the dust cover(s).
- Remove the nuts and disconnect the wires from the terminals on the coil.
- Remove the four retaining screws and remove the coil. Note the gasket below the coil-remove it carefully to avoid damage.
- Install the coil, paying close attention to the gasket and its placement.
- Connect the wiring to the coil and be careful of the routing of the wires.
- Install the dust cover(s), the rotor and the cap.
- Reconnect the battery.