Cadillac STS engine skipping issue after replacing cylinder 3 coil on Cadillac STS

Some Cadillac STS owners report experiencing engine skipping issues after replacing the cylinder 3 coil, often linked to improper installation or loose connections that lead to misfires. Additionally, they find that worn-out or faulty spark plugs in cylinder 3 can contribute to these problems. Since the initial issue involved multiple cylinders, owners are advised to inspect the coils and components in cylinders 1, 3, and 5, as a malfunction in one cylinder may affect others. Performing a diagnostic scan for error codes can help identify other potential issues causing the engine skipping. Furthermore, some owners discover that inspecting the fuel system, including fuel injectors and filters, is crucial for ensuring proper fuel delivery, as clogs can lead to misfires. Conducting a compression test on cylinder 3 and others is also recommended, as low compression can indicate internal engine problems. If transmission-related symptoms accompany the engine skipping, checking the transmission fluid level and condition is advisable, as low fluid can impact performance. Lastly, the shaking at idle that smooths out during acceleration may suggest motor mount issues, prompting some owners to examine these components for wear or damage. Addressing these factors can help effectively troubleshoot and resolve the engine skipping issue in the Cadillac STS.