The Can-Am Commander is a rugged and versatile side-by-side, known for its power and off-road capabilities. However, a common complaint among owners is excessive heat radiating into the cab, especially during warmer months or demanding rides. This heat soak can make for an uncomfortable, even dangerous, experience, significantly impacting the enjoyment of your Commander. Let's dive into the common causes, solutions, and preventative measures to keep your Commander cool and comfortable.

Why is My Commander Feeling Like a Furnace? The Usual Suspects

Several factors can contribute to the dreaded "Commander oven" effect. Understanding these culprits is the first step in diagnosing and addressing the problem.

  • Engine Heat Soak: The engine is the primary source of heat, and its proximity to the cab means radiated heat is a major concern. Without adequate insulation or airflow, this heat permeates the cabin, making it uncomfortable for the driver and passengers.
  • Exhaust System Proximity: The exhaust system, including the header pipes and muffler, generates significant heat. If these components are too close to the cab or lack proper shielding, the heat will transfer directly into the passenger compartment.
  • Radiator Issues: A clogged or inefficient radiator can cause the engine to run hotter than it should, exacerbating the heat problem. A malfunctioning fan can also contribute, as it won't be effectively pulling air across the radiator to dissipate heat.
  • Poor Ventilation: The Commander's design, while functional, can sometimes lack optimal ventilation. Limited airflow within the cab traps heat, leading to a buildup that makes things unbearable.
  • Aftermarket Accessories: While often intended to improve performance or aesthetics, some aftermarket accessories can worsen heat issues. For example, poorly designed cab enclosures can trap heat, while certain exhaust systems might run hotter than the stock version.
  • Driving Conditions: The type of terrain and riding style can significantly impact engine temperature. Driving at low speeds in hot weather, climbing steep hills, or engaging in heavy towing puts extra strain on the engine, generating more heat.

Diagnosing the Heat: Where's it Coming From?

Before throwing parts at the problem, take some time to pinpoint the source of the heat. Here's a simple troubleshooting approach:

  1. Idle Test: Start the Commander and let it idle for 10-15 minutes. Carefully feel around the engine compartment, exhaust system, and cab floor for hot spots. This can help you identify areas where heat is radiating most intensely. Be extremely cautious to avoid touching hot surfaces.
  2. Radiator Check: Ensure the radiator is clean and free of debris. Check the coolant level and condition. Inspect the radiator fan for proper operation. It should engage when the engine reaches a certain temperature.
  3. Exhaust Inspection: Look for any cracks or leaks in the exhaust system. Make sure the exhaust heat shield is properly installed and in good condition.
  4. Airflow Assessment: Pay attention to the airflow within the cab. Is there sufficient ventilation? Are there any obstructions blocking airflow to the radiator or engine?
  5. Temperature Monitoring: Consider using an infrared thermometer to measure surface temperatures in different areas of the engine compartment, exhaust system, and cab. This can provide valuable data for identifying heat sources.

Cooling Down Your Commander: Practical Solutions

Once you've identified the source(s) of the heat, it's time to implement some solutions. Here are several proven methods to reduce heat in your Can-Am Commander:

  • Heat Shielding: This is often the first line of defense.

    • Exhaust Wrap: Wrapping the exhaust header pipes with heat-resistant exhaust wrap can significantly reduce radiated heat. Be sure to use a high-quality wrap designed for high-temperature applications. Follow the manufacturer's instructions carefully during installation.
    • Heat Shielding Material: Apply heat shielding material to the firewall, floorboards, and other areas where heat is radiating into the cab. Several types of materials are available, including adhesive-backed aluminum foil and ceramic-based coatings.
    • Custom Shields: Consider fabricating custom heat shields to protect specific areas, such as the fuel tank or air intake.

  • Insulation: Insulating the cab can help block heat from entering.

    • Floorboard Insulation: Install insulation under the floorboards to reduce heat transfer from the engine and exhaust.
    • Firewall Insulation: Adding insulation to the firewall will help block heat from the engine compartment.
    • Cab Enclosure Insulation: If you have a cab enclosure, consider adding insulation to the roof and walls.

  • Improved Ventilation: Increasing airflow within the cab can help dissipate heat.

    • Windshields and Vents: Consider using a windshield with adjustable vents to allow for better airflow.
    • Cab Fans: Install a small electric fan inside the cab to circulate air.
    • Rear Window: A rear window or vent can improve airflow through the cab.

  • Radiator Upgrades:

    • Larger Radiator: Upgrading to a larger radiator can improve cooling capacity, especially if you frequently ride in hot conditions or engage in demanding activities.
    • High-Performance Fan: A high-performance radiator fan can provide better airflow across the radiator, further enhancing cooling efficiency.
    • Radiator Relocation: Relocating the radiator to a higher position can reduce the amount of dirt and debris that accumulates on the radiator fins, improving cooling performance. Some kits move the radiator to the rear of the vehicle.

  • Coolant Upgrades:

    • High-Performance Coolant: Switching to a high-performance coolant can improve heat transfer and reduce engine temperature.
    • Coolant Additives: Consider using a coolant additive designed to improve cooling efficiency.

  • Exhaust System Modifications:

    • Aftermarket Exhaust: Some aftermarket exhaust systems are designed to run cooler than the stock exhaust. Research carefully before purchasing an aftermarket exhaust system to ensure it will not exacerbate heat issues.
    • Proper Exhaust Routing: Ensure the exhaust system is properly routed and not too close to the cab or other sensitive components.

  • Engine Tuning:

    • Fuel Mixture: An improperly tuned engine can run hotter than it should. Ensure the fuel mixture is properly adjusted.
    • Engine Management System: Consider using an aftermarket engine management system to optimize engine performance and reduce heat.

  • Personal Cooling:

    • Cooling Vests: Wear a cooling vest to help regulate your body temperature.
    • Hydration: Stay hydrated by drinking plenty of water.

  • Regular Maintenance:

    • Coolant Flush: Regularly flush and replace the coolant to ensure optimal cooling performance.
    • Radiator Cleaning: Keep the radiator clean and free of debris.
    • Air Filter: Ensure the air filter is clean to maintain proper airflow to the engine.

Specific Product Recommendations (with Caveats!)

While recommending specific products can be helpful, it's crucial to understand that results can vary depending on individual circumstances and installation quality. Always do your own research and read reviews before making a purchase. Consider the following product categories:

  • Heat Shielding: DEI (Design Engineering, Inc.) offers a wide range of heat shielding products, including exhaust wrap, adhesive-backed heat barriers, and reflective tapes.
  • Insulation: Dynamat and similar products can be used to insulate the floorboards and firewall.
  • Radiators: Several aftermarket companies offer larger, higher-capacity radiators for the Can-Am Commander. Research brands like Mishimoto or similar performance cooling brands.
  • Fans: Spal and similar brands offer high-performance radiator fans.
  • Coolant: Engine Ice and similar high-performance coolants can improve cooling efficiency.

Always verify compatibility with your specific Commander model before purchasing any parts.

Preventing Heat Problems: Proactive Measures

The best approach is often prevention. Implement these strategies to minimize heat issues from the outset:

  • Regular Maintenance: Adhere to the recommended maintenance schedule for your Commander, including coolant flushes, radiator cleaning, and air filter replacement.
  • Proper Ventilation: Ensure that the cab is properly ventilated, especially during hot weather.
  • Avoid Overloading: Don't overload the Commander beyond its rated capacity, as this can put extra strain on the engine and generate more heat.
  • Ride Smart: Adjust your riding style to minimize engine strain. Avoid prolonged periods of low-speed driving in hot weather.
  • Monitor Engine Temperature: Pay attention to the engine temperature gauge and take action if the engine starts to overheat.

Frequently Asked Questions

  • Why is my Can-Am Commander overheating? Overheating can be caused by a clogged radiator, low coolant, a malfunctioning fan, or an engine problem. Check these components and address any issues promptly.
  • How do I clean my Can-Am Commander radiator? Use a garden hose with a gentle spray nozzle to remove dirt and debris from the radiator fins. Avoid using high-pressure washers, as they can damage the fins.
  • Can I use regular car coolant in my Can-Am Commander? It's best to use a coolant specifically designed for powersports vehicles, as it's formulated to handle the higher temperatures and demands of off-road riding.
  • Is it normal for my Can-Am Commander to get hot in the cab? Some heat is normal, but excessive heat indicates a problem. Implement the solutions outlined above to reduce heat in the cab.
  • Does exhaust wrap really work? Yes, exhaust wrap can significantly reduce radiated heat from the exhaust system. Ensure that you use a high-quality wrap and install it properly.

Conclusion

Dealing with heat issues in your Can-Am Commander can be frustrating, but with a systematic approach to diagnosis and the implementation of appropriate solutions, you can significantly improve your riding comfort. By understanding the sources of heat, taking preventative measures, and addressing any underlying problems, you can transform your Commander from a potential oven into a cool and enjoyable off-road machine. Don’t let the heat ruin your ride; take control and enjoy the open trails!