Signs of a Failing Starter Motor

What Does a Starter Motor Do?

When you start your car, the battery sends an electrical charge to the starter motor. This small but powerful motor then engages the engine’s flywheel, turning the engine over so that combustion can begin. Once the engine is running, the starter motor disengages and shuts off.

A failing starter motor struggles with this process, leading to starting issues that may seem like battery problems or something more serious.

Common Signs of a Failing Starter Motor

Clicking Sound When You Turn the Key

One sign of a failing starter motor is a clicking noise when you try to start your vehicle. This often indicates that the motor is receiving power but is too weak to engage the engine. While a single click may point to a battery issue, repeated clicking without engine turnover may be a sign that your starter is not up to the task.

Engine Doesn’t Crank

If you turn the key or push the start button and nothing happens—no sound, no movement—your failing starter motor may be the problem. A dead battery could also cause this, so it’s a good idea to rule that out first. If your lights and electronics still work but the engine doesn’t crank, the starter is a likely suspect.

Grinding Noise

A grinding noise when starting your car can indicate that the starter gear is not properly engaging with the engine flywheel. This metal-on-metal grinding sound can also cause damage to the flywheel over time, leading to more expensive repairs if not addressed quickly.

Smoke or Burning Smell

If you notice smoke or a burning odor when trying to start your vehicle, it could mean that the failing starter motor is overheating due to electrical issues or constant attempts to start the engine. This is a serious warning sign and should not be ignored. Continuing to try to start the car could further damage the starter or even pose a fire risk.

Starter Stays On After the Engine Starts

Normally, the starter motor disengages as soon as the engine starts. However, if it continues running after the engine has turned over, it could mean the solenoid (the component that controls the starter motor bendix) is stuck. This can wear down both the starter and the flywheel, leading to expensive repairs.

What Causes a Starter Motor to Fail?

There are several reasons why a starter motor might fail:

Electrical issues: Faulty wiring or loose connections can prevent the starter from receiving enough power.
Worn out components: Over time, brushes, bearings, and other internal parts can wear down.
Heat damage: Prolonged exposure to engine heat can degrade the starter motor housing and internal parts.
Oil leaks: Leaking oil can contaminate the starter, shortening its lifespan.

What to Do If You Suspect a Failing Starter Motor

If you’re noticing one or more of the signs mentioned above, it’s time to have your vehicle inspected by a trusted mechanic. Diagnosing a failing starter motor early can save you time, stress, and money down the road.

Here’s what you should do:

Rule out the battery: Sometimes a weak or dead battery mimics starter motor problems. Have your battery tested first.
Check for corrosion: Look at your battery terminals and starter connections for signs of corrosion or loose wires.
Call a professional: If you’re unsure, a certified technician can quickly test your starter and determine if it needs to be repaired or replaced. At Northwest Auto Center in Houston, we are equipped and ready to help! Call us at (281) 894-8880.

Preventing Starter Motor Issues

While starter motors eventually wear out, proper vehicle maintenance can help extend their life. Make sure to:

• Keep your battery and electrical system in good condition.
• Avoid holding the key in the start position for too long.
• Address oil leaks promptly.
• Schedule regular vehicle inspections with a trusted auto repair shop.

A failing starter motor doesn’t usually fail without warning. By keeping an eye (and ear) out for clicking, grinding, or non-starting issues, you can catch problems early and avoid being stranded. At Northwest Auto Center of Houston, we’re here to help you diagnose and fix starter motor issues before they become a bigger headache.

If your car is showing signs of trouble starting, don’t wait. Bring it by our shop, and we’ll take care of the rest—so you can get back on the road with confidence! Call us today at (281) 894-8880.