One of the most common that every Club Car golf cart encounters issues from time to time is a faulty MCOR (Motor Controller Output Regulator).
This article will show all the Club Car bad MCOR symptoms and how to test and fix the issue.
So, If you own a Club Car and are experiencing any of the Club Car Bad MCOR Symptoms, this article has enough insights to help you get your golf cart working optimally again.
Club Car Bad MCOR Symptoms & Troubleshooting Fixes
These are Club Car bad MCOR symptoms with their fixes:
- The golf cart accelerates too quickly.
- The golf cart doesn’t stop when the accelerator pedal is released.
- The golf cart doesn’t move.
- The golf cart jerks or hesitates when you press the accelerator pedal.
- The golf cart’s speed fluctuates.
- The golf cart won’t reverse.
Troubleshooting Fixes
- To fix the issue of quick acceleration, adjust the voltage output of the MCOR with a voltmeter.
- Replace the MCOR if your golf cart doesn’t stop.
- To fix the issue of your golf cart not moving, you should replace the MCOR.
- The solution to your golf cart jerking is to check the voltage output of the MCOR and replace it if necessary.
- To fix a fluctuating golf cart speed, check the MCOR’s voltage output and replace it if necessary.
- Replace the MCOR if your golf cart doesn’t reverse.
You can also check out my article on Club Car Accelerator Adjustment, to further help troubleshoot that slow acceleration and jerky movement.
Club Car Bad Mcor Replacement Guide
Follow these steps for Club Car Bad MCOR replacement:
- Turn off the golf cart and remove the key from the ignition.
- Open the battery compartment and remove the negative cable to prevent electrical shock.
- Loosen the bolt or screw holding the accelerator pedal in place and remove it.
- Pull on the connector to disconnect the MCOR from the wiring harness.
- Unscrew the mounting screws to remove the old MCOR from the golf cart.
- Fix the new MCOR and tighten the mounting screws.
- Connect the wiring harness to the new MCOR by pushing the connector into the port until it clicks into place.
- Reinstall the accelerator pedal to the new MCOR by tightening the bolt or screw and reconnecting the negative battery cable.
- Turn on the golf cart and test the new MCOR by pressing the accelerator pedal. Check the output voltage and ensure it is within the specified range.
- After confirming that the new MCOR is functioning correctly, close the battery compartment and test drive the golf cart to ensure it works correctly.
If you think there is a problem with your cart’s carburetor, governor, or accelerator, check my Club Car Carburetor Adjustment, Club Car Governor Adjustment, and Club Car Accelerator Adjustment Guides.
How to Test MCOR on Club Car
Follow these steps to test MCOR on Club Car:
- Turn off the golf cart and remove the key from the ignition.
- Remove the negative battery cable to prevent electrical shock.
- Find the MCOR, which is usually attached to the accelerator pedal and has two wires leading to it.
- Disconnect the MCOR from the wiring harness by pulling on the connector.
- Set your voltmeter to measure DC voltage and connect the red lead of the voltmeter to the positive terminal of the MCOR and the black lead to the negative terminal.
- Press the accelerator pedal and increase pressure slowly while monitoring the voltmeter. The voltage output should increase smoothly and steadily. If the voltage jumps or fluctuates, it could indicate a bad MCOR.
- Check the output voltage against the manufacturer’s specifications. If the voltage exceeds the specified range, the MCOR must be replaced.
- Connect the MCOR to the wiring harness by pushing the connector into the port until it clicks into place.
- Reconnect the negative battery cable.
- Turn on the golf cart and test the accelerator pedal to ensure it works correctly.
Club Car Precedent MCOR Replacement Guide
Follow these steps for Club Car Precedent MCOR Replacement:
- Turn off the golf cart and remove the key from the ignition.
- Open the battery compartment and remove the negative cable to prevent electrical shock.
- Loosen the bolt or screw holding the accelerator pedal in place and remove it.
- Pull the connector to disconnect the MCOR from the wiring harness.
- Unscrew the mounting screws to remove the old MCOR from the golf cart.
- Fix the new MCOR and tighten the mounting screws.
- Connect the wiring harness to the new MCOR by pushing the connector into the port until it clicks into place.
- Reinstall the accelerator pedal to the new MCOR and reconnect the negative battery cable.
- Turn on the golf cart and press the accelerator pedal to test the new MCOR. Check the output voltage and ensure it is within the specified range.
- Close the battery compartment after confirming that the new MCOR is functioning properly, and take the golf cart for a test drive.
Club Car MCOR Location
The MCOR on a Club Car can be found near the accelerator pedal. It is mounted on the frame, and with a linkage, it is connected to the accelerator pedal.
MCOR 3 vs MCOR 4 Comparison
This is a comparison between MCOR 3 and MCOR 4:
| Factors | MCOR 3 | MCOR 4 |
|---|---|---|
| Compatibility | Older Club Car models. | Newer Club Car models. |
| Design | It has a plastic casing and is usually black or gray. | It has a metal casing and is usually silver in color. |
| Performance | Provides less signal to the motor controller than the MCOR 4. | Provides more signal to the motor controller giving the art smoother acceleration and deceleration. |
| Cost | Inexpensive. | Expensive. |
| Wiring | It has two wires that lead to it. | It has three wires that lead to it. |
If you own a Club Car Onward, check out this article on Club Car Onward Speed Upgrade.
FAQ
These are some frequently asked questions about Club Car Bad MCOR Symptoms:
How Can You Tell if MCOR on A Club Car Is Bad?
Put your golf cart in neutral and depress the gas pedal slowly. The throttle should move from 0% to 100% smoothly. If it jumps around erratically (17% up to 30% or back to 10%) then your MCOR is bad.
What Does an MCOR Do on A Club Car?
The MCOR is a device that translates your foot movement at the pedal into an electrical impulse that the motor controller reads, enabling the driver to control the vehicle’s speed smoothly and precisely.
Conclusion
A bad MCOR will cause some issues in a Club Car golf cart. Club Car bad MCOR symptoms include jerky acceleration, stalling, and intermittent power loss. If you experience these symptoms, you should test and replace your MCOR if necessary to restore your golf cart’s functionality.
Understanding the Club Car bad MCOR symptoms and taking the necessary steps to troubleshoot and replace a faulty MCOR will ensure the smooth running of your golf cart.
