DIY: How To Remove Speed Limiter On Electric Golf Cart
A speed limiter is a part of your golf cart that stops it from going too fast. Can you remove it? Yes, you can make changes to increase your golf cart’s speed. Many people want to go faster. This guide will show you how to safely increase your golf cart’s speed using common DIY methods. You do not need to be a car expert to do this. Most people with basic tools can follow these steps.
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Common Ways to Increase Golf Cart Speed
Golf carts come with parts that limit their top speed. This is for safety and to save the battery. But many owners want more speed. This section looks at common ways to make your cart go faster. We will cover methods for different golf cart brands. These include Club Car, EZGO, and Yamaha models.
Why Your Golf Cart Has a Speed Limiter
Your golf cart has a speed limiter for good reasons. Safety is a big one. Faster carts are harder to stop. They can also flip over on turns. Limiting speed also helps the battery. It makes the battery last longer on one charge. It also saves the motor and other parts from too much wear. Think of it like a governor on an engine. It keeps things from going too fast or getting too hot.
Safety First: Things to Know Before You Start
Making your golf cart faster changes how it runs. It also changes how safe it is. Always put safety first.
- Wear safety gear: Use safety glasses and gloves.
- Know your cart’s limits: Your cart was made for a certain speed. Going much faster can stress parts. This includes brakes, tires, and suspension.
- Check local laws: Some places have rules about how fast golf carts can go. Breaking these rules can lead to fines.
- Know the risks: A faster cart can be harder to control. It might take longer to stop. It could also flip if you turn too fast. Think about these risks before you start.
Controller Adjustments
The controller is like the brain of your electric golf cart. It tells the motor how much power to use. Often, the controller has a speed limit built in. Making changes here can increase your cart’s top speed. This is a key part of electric golf cart controller adjustment.
Many controllers, like Curtis or Alltrax, can be reprogrammed. Some older ones have a tiny screw, a potentiometer, that you can turn.
- Reprogramming: You might need a special handheld device. Sometimes, a laptop with specific software is needed. You connect it to the controller. Then you can change settings like top speed. This method offers good control. But it may need specific tools or knowledge.
- Potentiometer adjustment: Some golf carts have a small knob or screw on the controller. This is a golf cart potentiometer adjustment. Turning it can change the speed setting. Turn it a little bit at a time. Then test your cart. Do not turn it too much too fast. This can make your cart jump or act strange. Not all controllers have this easy adjustment.
How to adjust a potentiometer (if present):
1. Find the small screw or knob on your controller. It often looks like a tiny flat-head screw.
2. Use a small screwdriver.
3. Turn the screw a quarter turn clockwise. This usually increases speed.
4. Test your cart safely.
5. Repeat small turns until you reach your desired speed. Do not over-adjust.
Speed Sensor Bypass/Modification
Many electric golf carts have a speed sensor. It is often on the motor or differential. This sensor tells the controller how fast the wheels are turning. If the wheels spin too fast, the sensor tells the controller to slow down. Bypassing this sensor can trick the controller. It will think the cart is going slower than it is. This lets the cart draw more power. This is a common way to bypass golf cart speed sensor.
How a speed sensor works:
* It sends pulses to the controller.
* More pulses mean faster speed.
* The controller limits power when pulses go above a certain number.
Bypassing the sensor:
1. Locate the speed sensor: It is usually at the end of the motor, near the axle. It has a small wire harness.
2. Disconnect the wires: Some sensors can be unplugged. This often puts the cart into a “limp mode.” This might give more speed but also make the cart run rough.
3. Install a “speed magnet”: For some carts, like EZGO PDS models, you can change the magnet inside the speed sensor. A stronger magnet sends fewer pulses at the same speed. This tricks the controller. This is a common golf cart speed upgrade.
Important note: Bypassing the sensor can make the cart jerky. It might also cause other issues. Some controllers detect this bypass. They might go into a safety mode.
Speed Chip Installation
EZGO speed chip installation is a very popular way to get more speed. This applies mainly to EZGO carts with PDS (Precision Drive System) controllers. A “speed chip” is not a chip you install directly into the controller. It is often a specific wiring harness. This harness tells the controller to ignore the speed limit.
What is an EZGO speed chip?
* It is a small connector.
* You plug it into a port on the controller.
* This changes the controller’s program. It unlocks higher speed settings.
* It is usually a simple plug-and-play install.
How to install an EZGO speed chip:
1. Turn off your golf cart. Take the key out.
2. Find your controller. It is usually under the seat or in the rear trunk area.
3. Look for a diagnostic or programming port on the controller. It is often a small 4-pin or 6-pin connector.
4. Plug the speed chip harness into this port. Make sure it clicks in.
5. Turn on your cart and test it. You should feel an instant speed increase.
Benefits: Easy to install, often provides a good speed boost.
Drawbacks: Only works on specific EZGO models. It might not give the highest possible speed.
Motor Upgrades
If you want a lot more speed and power, a motor upgrade is a great choice. An electric golf cart motor upgrade kit replaces your cart’s stock motor. Stock motors are good for general use. But high-speed motors are built for more power. They can turn faster or have more torque.
Types of motor upgrades:
* High-speed motors: These motors are designed to spin faster. This gives a higher top speed.
* High-torque motors: These are good for climbing hills or carrying heavy loads. They also help with faster starts.
* Combination motors: Some motors offer both high speed and high torque.
What comes in a kit:
* A new motor.
* Often, a matching controller. Your old controller might not handle the new motor’s power.
* Sometimes, heavier duty cables are included. These carry more current safely.
Installation overview:
1. Disconnect your battery pack. Safety first!
2. Unbolt the old motor. It is often held by a few bolts to the differential.
3. Disconnect the motor wires. Label them first.
4. Install the new motor. Bolt it in place.
5. Connect the new wires. Make sure they go to the right places.
6. If you have a new controller, install it too.
7. Reconnect the battery. Test your cart.
Benefits: Big gains in speed and power. Can handle hills better.
Drawbacks: More expensive. Installation is more complex than simple chip or sensor fixes. You might need to upgrade other parts too.
Drive System Adjustments
This method involves changing the gears in your golf cart’s differential. This is a serious golf cart speed upgrade. Your cart’s differential holds the gears that connect to the wheels. Changing these gears can make your cart go faster.
- High-speed gears: These gears change the ratio. It means the wheels turn more times for each motor rotation. This leads to higher top speed.
- How they work: Your motor spins at a certain rate. High-speed gears make the wheels spin faster at that same motor speed.
- Installation complexity: This is not a simple DIY job for most people. It involves opening the differential. You need special tools and knowledge. It is best left to a pro unless you are very skilled.
Benefits: Can provide significant speed gains.
Drawbacks: Expensive, complex installation, can reduce torque (power for hills).
Solenoid Bypass
A solenoid is a large relay in your golf cart. It connects battery power to the controller and motor. It usually clicks when you press the pedal. A solenoid bypass for golf cart speed is not a common way to increase top speed directly. Its main job is to turn power on and off.
- What it means: Bypassing the solenoid would mean power is always connected. This is unsafe. It also drains your battery.
- Speed impact: The solenoid’s job is not to limit speed. So, bypassing it will not make your cart go faster. It is important for safe power control. Do not bypass your solenoid. If it is faulty, replace it with a heavy-duty one. A stronger solenoid can handle more current. This is good if you upgrade your motor or controller.
Golf Cart Potentiometer Adjustment
As mentioned, some older controllers have a potentiometer. This is a small variable resistor. It helps control the output signal to the motor. Adjusting it can change the speed limit. This is a direct form of golf cart potentiometer adjustment. Always make small turns and test.
Step-by-Step Golf Cart Speed Limiter Bypass Instructions (General)
This section gives general steps for common DIY speed upgrades. Always disconnect your battery first. This stops power and keeps you safe.
Deciphering Your Golf Cart’s Speed Limiters
Before you start, find out what limits your cart’s speed.
* Check your cart’s manual: It might list features or settings.
* Look online: Search forums or websites for your specific make and model. For example, “Club Car speed limiter” or “EZGO PDS controller settings.”
* Inspect your cart: Look for a speed sensor on the motor. Check your controller for adjustment screws or programming ports.
| Golf Cart Brand | Common Speed Limiter Method | DIY Friendly? | Potential Speed Gain |
|---|---|---|---|
| EZGO (PDS) | Speed Chip (harness) | High | 3-5 MPH |
| EZGO (Series) | Controller/Motor RPM | Low (needs upgrade) | Varies, high |
| Club Car (DS) | Potentiometer/Controller | Medium | 2-4 MPH |
| Club Car (Precedent) | Controller/Speed Sensor | Medium | 3-6 MPH |
| Yamaha | Controller/Speed Sensor | Medium | 3-5 MPH |
Speed Sensor Bypass Steps (Most Common DIY Method)
This method often works for EZGO and Yamaha carts.
1. Turn off cart: Remove the key. Put the forward/reverse switch in neutral.
2. Disconnect batteries: Find the main battery pack. Disconnect the negative (-) cable first. Use a wrench. This stops all power.
3. Locate the speed sensor: It is usually on the back of the motor. It looks like a small plastic cap with wires coming out.
4. Work on the sensor:
* Option A (Magnet Swap for EZGO PDS): If your cart is an EZGO PDS, you can buy a high-speed magnet. You will need to take off the sensor cover. Swap the old magnet with the new, stronger one. Put the cover back on.
* Option B (Bypass Module/Resistor): For some carts, you can buy a small module or resistor. You wire it into the sensor’s connection. This tricks the controller. Follow the module’s instructions carefully.
* Option C (Unplugging for testing): Some older carts might gain speed if you unplug the sensor. But this often puts the cart in a “limp mode.” This mode can be jerky and not ideal. Test it first. If it works, consider a permanent fix like a speed magnet.
5. Reconnect batteries: Put the negative (-) cable back on.
6. Test the cart: Drive it slowly at first in a safe area. Check the new top speed. Listen for any strange noises.
Controller Adjustment Steps
This applies if your controller allows for a simple potentiometer adjustment or programming.
1. Turn off cart and disconnect batteries: Always do this first.
2. Find your controller: It is usually under the seat.
3. Look for adjustment:
* Potentiometer: Find the small screw on the controller. It might be labeled “speed” or “pot.”
* Programming Port: Some controllers have a port for a handheld programmer.
4. Make small adjustments:
* Potentiometer: Use a small flat-head screwdriver. Turn it a quarter turn clockwise.
* Programmer: Connect the programmer. Follow its steps to increase the speed limit. Do not set it too high.
5. Reconnect batteries:
6. Test the cart: Drive it to see the speed change. If needed, disconnect batteries again and adjust a little more.
EZGO Speed Chip Installation Guide
This is for EZGO PDS carts.
1. Turn off cart and disconnect batteries.
2. Locate the controller: It is under the seat, often on the driver’s side.
3. Find the “run/tow” switch: Make sure it is in “TOW” mode. This drains capacitors and is safer.
4. Find the programming port: It is usually a white connector with 4-6 pins. It is often next to the larger wires on the controller.
5. Plug in the speed chip: Push the speed chip harness firmly into the port. It should click into place.
6. Switch to “RUN”: Put the run/tow switch back to “RUN.”
7. Reconnect batteries.
8. Test the cart: Drive it in a safe area. You should feel a speed boost right away.
Yamaha Golf Cart Performance Mods (General Tips)
Yamaha electric carts often use speed sensors or controller limits.
* Speed Sensor: Like EZGO, you can often bypass the speed sensor on Yamaha carts. Look for the sensor on the motor.
* Controller Upgrade: For Yamaha, upgrading the controller is a common way to get more speed and power. Aftermarket controllers (like Alltrax) allow higher amp limits and more speed. This requires replacing the stock controller.
* High-Speed Motor: Combining a new controller with a high-speed motor will give the biggest gains for Yamaha carts.
Increase Club Car Top Speed (General Tips)
Club Car models, especially DS and Precedent, have different ways to limit speed.
* Potentiometer (Older Club Car DS): Some older Club Car DS models have a potentiometer on the controller. Adjusting it can give more speed.
* Speed Sensor Bypass (Club Car Precedent IQ/IQ Plus): For newer Club Car Precedent models with IQ or IQ Plus systems, there is a speed sensor. You can buy modules to bypass it. Or, some people cut a wire to the sensor. This tricks the controller.
* Controller Upgrade: For serious speed, an aftermarket controller is best for Club Cars. It allows more power and higher speeds.
* High-Speed Motor: As with other brands, a high-speed motor is the ultimate upgrade for Club Car speed.
Advanced Golf Cart Performance Modifications
If the basic steps do not give you enough speed, you can do more. These changes often work together.
* Combine Mods: Pair a new controller with a new motor. This is the best way to get a lot more speed and power. The controller can push more power to the new motor.
* Tires: Stock tires are not for high speeds. They can wear out fast or even blow out. Get radial tires meant for higher speeds. Make sure they have a good speed rating.
* Suspension: A faster cart needs better handling. Upgrade your suspension. This helps keep the cart stable. It also makes the ride smoother at higher speeds.
* Brakes: Your stock brakes might not be enough for higher speeds. Consider upgrading to disc brakes or heavier duty brake pads. This helps you stop safely.
| Mod Type | Cost (Estimate) | Speed Gain (MPH) | Complexity |
|---|---|---|---|
| EZGO Speed Chip | $50 – $100 | 3-5 | Easy |
| Speed Sensor Bypass | $50 – $150 | 3-6 | Easy |
| Controller Program/Potentiometer | $0 (if tool owned) – $500 (new controller) | 2-10 | Medium |
| High-Speed Motor | $400 – $1000 | 5-15+ | Harder |
| High-Speed Gears | $300 – $600 | 5-10 | Very Hard |
| Tire Upgrade | $200 – $400 | Minor, but safer | Easy |
| Suspension/Brakes | $300 – $1000+ | Minor, for safety/handling | Medium to Hard |
Estimates are for parts only. Installation labor is extra if you hire someone.
Testing Your Modified Golf Cart
After making changes, test your cart safely.
1. Find a safe, open area: A large, empty parking lot is best.
2. Start slow: Drive slowly first. Check for any strange sounds or feelings.
3. Increase speed slowly: Gradually push the pedal more. Feel how the cart handles.
4. Test braking: Make sure your brakes work well at higher speeds.
5. Check for issues: Look for any signs of overheating. This might be a hot motor or controller. Listen for buzzing or grinding. If you find any issues, stop and check your work.
Maintenance After Speed Upgrades
A faster golf cart works harder. This means you need to do more maintenance.
* Batteries: High speeds drain batteries faster. Check water levels often for flooded batteries. Ensure connections are clean.
* Motor: Feel the motor after a drive. If it is very hot, you might be pushing it too hard.
* Tires: Check tire pressure often. Higher speeds can wear tires out faster.
* Brakes: Check your brakes more often. Ensure they are working well.
* Bearings: More speed means more stress on wheel bearings. Check them for play or noise.
Frequently Asked Questions (FAQ)
Q: How much faster can my golf cart go after removing the limiter?
A: It depends on your cart and the changes you make. Simple changes like a speed chip might add 3-6 MPH. A new motor and controller could add 10-15 MPH or more.
Q: Will removing the speed limiter hurt my golf cart’s battery?
A: Yes, it can. Going faster uses more power. This will drain your battery faster. It can also shorten the battery’s life over time.
Q: Is it legal to remove the speed limiter on my golf cart?
A: Laws vary by place. Some areas have speed limits for golf carts on public roads. Always check your local and state laws before making changes.
Q: Do I need special tools to remove the speed limiter?
A: For basic changes like a speed chip, you might only need a wrench and a screwdriver. For motor or controller upgrades, you might need more tools. These could include a socket set, wire cutters, and crimpers.
Q: Can I put the speed limiter back on if I change my mind?
A: Yes, in most cases, you can. If you installed a speed chip, just remove it. If you made controller changes, you can often undo them. If you replaced parts, you can put the original parts back on.
Q: Will these changes void my golf cart’s warranty?
A: Yes, most likely. Making non-approved changes to your golf cart will usually void its factory warranty.
Q: Will a lift kit and bigger tires make my golf cart faster?
A: Bigger tires can make your cart go a little faster. But they also reduce torque. This makes the cart slower to accelerate and climb hills. A lift kit mainly changes the cart’s height. It does not directly affect speed.