1. Dim or flickering headlights: If the headlights dim or flicker when you accelerate or turn on other electrical accessories, it could be a sign that the alternator is not providing enough power.
2. Difficulty starting the engine: If the car has difficulty starting or if the engine cranks slowly, it could be due to a weak or failing alternator.
3. Warning light: Most modern vehicles have a warning light on the dashboard that indicates if there is a problem with the charging system. If the alternator is failing, this light may illuminate.
4. Battery problems: If the battery is frequently going dead or needs to be jump-started, it could be a sign that the alternator is not charging it properly.
5. Unusual noises: If you hear unusual noises, such as squealing or grinding, coming from the engine compartment, it could be a sign that the alternator or one of its components is failing.
6. Electrical problems: If you experience electrical issues such as flickering lights, power window malfunctions, or intermittent stalling, it could be due to a faulty alternator.
7. Smells: If you smell something electrical or burning coming from the engine bay, it could indicate that the alternator is overheating or failing.
If you suspect that the alternator in your 1998 Mercury Mystique is failing, it's important to have it checked by a qualified mechanic as soon as possible to prevent further damage to the vehicle.