Browse Cadillac Eldorado Ignition Coil. Find Cadillac Eldorado Ignition Switch. Replace Cadillac Eldorado Ignition System & Cadillac Eldorado Ignition Price. To ensure the longevity of your Cadillac Eldorado's ignition system, regular checks and timely maintenance are crucial. Look out for difficulty starting the engine or a noticeable drop in fuel efficiency, which may signal the need for a replacement. Optimal performance hinges on selecting the right ignition type; options include traditional coil-on-plug, distributor-based, or electronic systems, each with unique benefits to match your driving style. High-quality materials are essential for durability, and professional installation is recommended to guarantee precision. By following these guidelines, you can extend the lifespan of your ignition system and maintain your Eldorado's smooth performance.