Mopar 56028138AD Ignition Coil Compatible

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Start by removing the ignition coil(s). Clean the outer case and check for any damage or cracks. Clean the coil primary terminals and remove any corrosion with a wire brush. Next, check the coil primary resistance by connecting the ohmmeter leads to the two primary coil terminals. Repeat this step for each coil. Then, check the coil secondary resistance by connecting one ohmmeter lead to a coil primary terminal and the other lead to the spark plug terminal. Repeat this step for each coil. Compare the measurements to the specified resistance values and replace the ignition coil(s) if necessary. To replace the coil, remove the air inlet duct/resonator if necessary. Disconnect the electrical connector and clean the area surrounding the ignition coil(s) with compressed air. Remove the nut from the ignition coil mounting stud and carefully pull the coil up with a twisting motion. Finally, remove the coil from the engine compartment and install the new coil in reverse order.