Hey there! As a supplier of Fat Tire Hub Motors, I've seen my fair share of issues with these motors not working. It can be super frustrating when you're all set to hit the road on your e-bike, and the motor just won't cooperate. But don't worry! I'm here to walk you through some common troubleshooting steps to get your Fat Tire Hub Motor up and running again.
First Things First: Check the Basics
Before you start digging deep into the motor itself, it's always a good idea to check the basics. These are the simple things that can often be overlooked but can cause big problems if they're not right.
Battery Connection
The battery is the power source for your hub motor, so it's crucial that it's properly connected. First, make sure the battery is fully charged. A dead or partially charged battery can cause the motor to not work at all or work intermittently.
Next, check the battery connections. Look for any loose or corroded wires. Sometimes, the vibrations from riding can loosen the connections over time. If you find any loose wires, gently tighten them. If there's corrosion, you can clean it off with a wire brush and some electrical contact cleaner.
Controller Connection
The controller is like the brain of your e-bike system. It regulates the power from the battery to the motor. Check the connections between the controller and the motor, as well as the controller and the battery. Just like with the battery connections, look for any loose or damaged wires.
If you're not sure which wires are which, you can refer to the wiring diagram that came with your e-bike. If you don't have the diagram, you can usually find it online by searching for your e-bike's make and model.


Throttle and Sensor
The throttle is what you use to control the speed of your e-bike, and the sensors help the motor know when to start and stop. Check the throttle to make sure it's working properly. Try turning it gently and see if the motor responds. If it doesn't, there could be an issue with the throttle itself or its connection to the controller.
Also, check the sensors. These are usually located near the pedals or the motor. Look for any signs of damage or loose connections. If you suspect a sensor is faulty, you may need to replace it.
Motor-Specific Checks
If the basics check out and the motor still isn't working, it's time to focus on the motor itself.
Resistance Test
You can use a multimeter to perform a resistance test on the motor. This will help you determine if there's an issue with the windings inside the motor. First, disconnect the motor from the controller. Then, set your multimeter to the resistance (ohms) setting.
Touch the multimeter probes to the motor's wires. You should get a reading within a certain range, which is usually specified in the motor's manual. If the reading is way off or shows infinite resistance, it could mean there's a short circuit or an open circuit in the motor windings.
Listen for Strange Noises
When you try to turn on the motor, listen for any strange noises. Grinding, clicking, or whining sounds can indicate a mechanical problem inside the motor. For example, a grinding noise could mean there's something stuck in the motor's gears or bearings.
If you hear any strange noises, it's best to stop using the motor immediately to avoid further damage. You may need to disassemble the motor to find and fix the problem. However, this can be a complex task, so if you're not comfortable doing it yourself, it's a good idea to take it to a professional.
Overheating
Overheating can also cause the motor to stop working. If the motor feels extremely hot to the touch after a short ride, there could be an issue with the motor's cooling system or an electrical problem that's causing it to draw too much current.
Check the motor's ventilation to make sure it's not blocked. If it is, clear any debris that may be blocking the vents. If the overheating persists, it could be a sign of a more serious problem, such as a faulty winding or a problem with the controller.
Other Possible Issues
Sometimes, the problem isn't with the motor or the basic components but with other parts of the e-bike system.
Chain and Gears
If your e-bike has a chain and gears, check them to make sure they're in good condition. A loose or damaged chain can cause the motor to not work properly because it can't transfer the power from the motor to the wheels effectively.
Inspect the chain for any signs of wear or damage. If it's loose, you can adjust it according to the manufacturer's instructions. Also, check the gears to make sure they're shifting smoothly. If you're having trouble shifting gears, it could be a problem with the derailleur or the gear cables.
Brake System
The brake system can also affect the motor's performance. If the brakes are dragging, it can put extra strain on the motor and cause it to not work properly. Check the brakes to make sure they're not rubbing against the wheels.
If you find that the brakes are dragging, you can adjust them to reduce the friction. You may need to adjust the brake pads or the brake cables. If you're not sure how to do this, you can take your e-bike to a bike shop and have them do it for you.
When to Replace Parts
If you've gone through all the troubleshooting steps and still can't get the motor to work, it may be time to replace some parts.
If the motor itself is damaged beyond repair, you'll need to replace it. We offer a wide range of high-quality Fat Tire Hub Motors, including the 16’’ Aluminum Alloy Integrated Hub Motor, Ebike Rear Hub Motor, and Magnesium Alloy Ebike Motor. These motors are designed to provide reliable performance and long-lasting durability.
If it's a smaller part like the throttle, sensor, or controller that's faulty, you can usually find replacement parts online or at a bike shop. Make sure to choose parts that are compatible with your e-bike's make and model.
Conclusion
Troubleshooting a Fat Tire Hub Motor that's not working can be a bit of a challenge, but by following these steps, you should be able to identify and fix most problems. Remember to always start with the basics and work your way up to the more complex checks.
If you're still having trouble or if you're not comfortable doing the troubleshooting yourself, don't hesitate to reach out to us. We're here to help you get your e-bike back on the road as soon as possible. Whether you need advice on troubleshooting or you're looking to purchase a new motor or replacement parts, we're just a message away. Contact us to start a purchase negotiation and get the best solutions for your e-bike needs.
References
- General knowledge and experience from working as a Fat Tire Hub Motor supplier.
- E-bike repair manuals and online resources for common e-bike troubleshooting.
