Most ignition modules cannot be tested using basic tools and equipment. Therefore, if you suspect a defective ignition module, it must be removed and taken to a qualified shop with the necessary diagnostic equipment.
REMOVAL & INSTALLATION
See Figure 1
Some distributors may require partial disassembly in order to remove and replace the ignition module. Though most modules are replaceable without disassembling the distributor, removing the distributor assembly from the engine will make access to the components easier. If you wish to avoid removing the distributor from the engine, remove the cap and rotor to see if access to the module retainers and connectors is possible, then decide if you want to remove the distributor.
- Disconnect the negative battery cable.
- Remove the distributor cap and position aside with the wires attached.
- If necessary, remove the distributor from the engine and place it on a clean work surface.
- If necessary, remove the rotor from the distributor assembly. If needed, remove the packing ring and the cover.
- If applicable, remove the electrical harness-to-distributor screw.
- Disengage the electrical harness from the ignition module.
- Remove the ignition module retaining screws, then lift the module from the distributor. If equipped, be sure to remove the spacers from the module.
- Apply a coat of silicone lubricant to the base of the ignition module to aid in heat dissipation.
- Install the ignition module to the distributor assembly and secure using the retainer screws. If equipped, be sure to properly position the spacers during installation.
- Attach the harness to the ignition module, then if equipped, install the harness retaining screw.
- If applicable, install the packing ring and cover.
- Install the rotor to the distributor assembly.
- If removed, install the distributor.
- Install the cap to the distributor assembly. If any wiring was disconnected, be sure to engage it as tagged or noted during removal.
- Connect the negative battery cable.