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Cart lurches at medium speed not at creep or full speed. How do i differentiate between controller and speed sensor? When you replace the speed sensor is there a magnet glued to the motor shaft that could come loose ? Or, are you done troubleshooting that part? Then are you looking at replacing the controller?
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The throttle input on a club car is responsible for controlling the speed of the vehicle. When you press the accelerator pedal, it sends a signal to the motor controller to regulate the speed and power output of the electric motor. One of the common components involved in this process is the Motor Controller Output Regulator (MCOR). The MCOR translates the physical position of the throttle pedal into an electrical signal that the controller can understand.
Internally, the MCOR works through a series of resistive contacts that change resistance as the throttle pedal is pressed. This change in resistance is then interpreted by the motor controller to adjust the speed of the cart. Over time, these contacts can become dirty or worn, leading to intermittent issues such as the cart lurching at medium speed.
A quick and easy test to determine if the MCOR is the source of the problem involves "cleaning" the contacts. Here’s how you can do it:
Turn off the cart: Ensure the cart is completely powered down to avoid any electrical issues.
Press the throttle: Push the throttle pedal from zero to full 30 times. This action helps to clean the throttle wiper contacts inside the MCOR by removing any dirt or oxidation that might be causing poor contact.
Test the cart: Turn the cart back on and see if there is any improvement in the lurching issue.
If you notice an improvement after performing this cleaning exercise, it’s likely that the MCOR is indeed the source of the problem. In this case, further addressing the MCOR might involve replacing the component entirely.
Other than that, check all wiring connections between the throttle, MCOR, and controller to verify they are secure and free from corrosion. Loose or corroded connections can also cause intermittent throttle issues.
If after these steps the problem persists and you suspect the speed sensor or controller, testing these components might be necessary. However, starting with the simpler and less expensive MCOR inspection and cleaning can save you time and money if it resolves the issue.
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