Ford Taurus engine continues to crank when key is turned after oil and cabin filter change on Ford Taurus

Some Ford Taurus owners report experiencing issues with their engine continuing to crank even after the key is turned. This problem may stem from a faulty starter, which can have internal issues that keep it engaged. Additionally, problems with the battery or engine can affect the starter motor, leading to this persistent cranking. Some owners have noted that burnt contacts in the solenoid can cause the starter to "run-on," potentially resulting in a "no crank" condition. Furthermore, a malfunctioning inertia switch, which is designed to stop the engine when there is no weight on the pedal or brake, could also contribute to the engine continuing to run after the key is removed. To address these concerns, it is recommended that owners have the starter system, battery, and engine inspected by a qualified mechanic, and check the inertia switch for proper functionality. If issues persist, consulting a professional mechanic for a thorough diagnosis is advisable.