How to Diagnose and Fix a Pool Motor

Are you one of the 10 million American homeowners with your own pool? A quick dip in your personal pool is a great way to beat the heat—until something breaks.

Your pool motor is responsible for forcing water through your pool’s pump system. It plays a vital role in keeping the water clean and safe. If it breaks down, swimming is off the table. That’s why keeping your motor in working order is one of the most important parts of pool maintenance.

Read on to find out everything you need to know about diagnosing and fixing a pool motor.

Diagnosing the Problem

Before you consider repairing or replacing the motor, determine whether the motor is actually the issue. What seems like a motor failure might be a problem with the pump housing or other components.

• Inspect the pump housing for cracks or visible damage.
• Check internal components for rust, leaks, or degraded tubing/wiring.
• If the pump is in good condition, then the issue likely lies in the motor.

Common Signs of Pool Motor Problems

Once you’ve ruled out the pump, the easiest way to diagnose motor issues is to listen for unusual sounds:

Screeching

This sound usually means the motor bearings are rusted. Bearings reduce friction between rotating parts. If they’re screeching, they’re grinding against one another.

✅ Solution: Replace the bearings—but note that this is a short-term fix for older motors.

Grinding

This may also be due to failing bearings nearing the end of their lifespan.

✅ Solution: Replace the bearings, but monitor closely for future failure.

Popping

A popping sound usually indicates electrical problems—often a power supply issue or internal wiring fault.

⚠️ Solution: Consult a licensed electrician for safe troubleshooting.

Humming

A humming motor could be a sign of a failed capacitor—often caused by a power surge.

✅ Solution: Replace the capacitor. This is typically a job for a pool service professional.

How Old Is Your Motor?

Most pool motors last around 10 to 15 years. If your motor is nearing that age and showing signs of wear, it may be smarter to replace it entirely instead of patching up individual parts.

Signs of Total Failure

If you turn on the pump and nothing happens—no sound, no vibration—it’s likely a full motor failure. In this case, replacement is your only option.

Should You Repair or Replace?

While repairing your motor may seem more affordable upfront, it's not always the best long-term strategy:

• Repairing: Good for minor issues like capacitor or bearing replacement—but no warranty, and life extension may be minimal.
• Replacing: Gives you peace of mind, a new warranty, and access to energy-efficient variable speed motors that can lower your utility bills.

Pool Motors You Can Trust

A functioning pool motor keeps your water clean, clear, and safe for swimming. If you suspect a problem, check both the pump and motor. Listen for telltale sounds and decide whether repair or replacement makes more sense for your situation.