Chevrolet 16194409 Electronic Ignition Control Module

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To remove the distributor, disconnect the negative battery terminal, remove the distributor cap and rotor, and disconnect the electrical connectors from the module. Remove both module attaching screws and lift the module away from the distributor. If reusing the same module, avoid wiping off the grease from the module or distributor base. For installation, apply silicone grease on the module face and distributor base if using a new module. Install the module, attach both electrical leads, and then reinstall the distributor rotor and cap. Finally, reattach the cable to the negative battery terminal.

To check the HEI, start by disconnecting the four-terminal connector from the distributor and test for a spark at the coil using a spark tester connected to the coil wire. If there is a spark, inspect the distributor cap, rotor, and coil wire for any damage or opens. In case there's no spark, remove the distributor cap and reconnect the four-terminal connector to the ignition module. Unplug the two-wire connector from the distributor and check for voltage at the module positive (+) terminal of the two-wire connector with the ignition switch turned ON. Depending on the reading, follow the diagnostic steps to identify potential faults and replace the faulty components as necessary.