New Holland C185 Loss of Power: Causes, Troubleshooting, and Solutions

[MikePhua]

Introduction
The New Holland C185 skid steer loader is a versatile machine, widely used for construction, landscaping, and material handling tasks. However, like any complex piece of machinery, the C185 can experience performance issues, including a loss of power. This can be especially frustrating, as power loss can lead to decreased productivity and even cause the machine to become inoperable. In this article, we will explore the common causes of power loss in the New Holland C185, provide troubleshooting tips, and discuss solutions to restore its performance.
Understanding the New Holland C185
The C185 skid steer is powered by a high-performance engine and features advanced hydraulic systems to ensure optimal operation. When the loader experiences power loss, the issue could stem from a variety of sources, including the engine, hydraulic system, or electrical components. It’s important to diagnose the issue accurately to avoid unnecessary repairs and downtime.
Common Causes of Power Loss
When the New Holland C185 experiences a loss of power, the issue is typically related to one of the following areas:

1. Fuel System Problems
   One of the most common causes of power loss in diesel engines like the one in the C185 is issues with the fuel system. If there’s an obstruction in the fuel lines or a problem with the fuel filter, the engine may not be receiving the correct amount of fuel, leading to a drop in power. Additionally, fuel contamination can clog the system and cause irregular engine performance.
   
2. Air Intake Blockage
   The engine requires a steady flow of air to function properly. A clogged air filter or a restriction in the air intake system can reduce the amount of oxygen available to the engine, resulting in a significant drop in power. It’s essential to check the air filter regularly, especially in dusty or dirty environments, as this is one of the most common causes of poor engine performance.
   
3. Hydraulic System Issues
   Since the C185 relies heavily on hydraulics to power various components, a problem in the hydraulic system could lead to a noticeable decrease in power. If the hydraulic pump is malfunctioning or if there are leaks in the hydraulic lines, the engine may struggle to operate efficiently, especially when using attachments or lifting heavy loads.
   
4. Exhaust System Clogging
   A clogged or damaged exhaust system can impede the engine’s ability to expel gases, which can, in turn, affect its performance. Carbon buildup in the exhaust system can reduce engine efficiency and cause a loss of power. The turbocharger, in particular, can suffer from such blockages, leading to noticeable reductions in power output.
   
5. Faulty Sensors or Wiring
   Modern equipment like the C185 is equipped with sensors that monitor various engine and hydraulic functions. A malfunctioning sensor or wiring issue could result in incorrect readings and affect the engine’s power output. For example, the throttle position sensor or the mass airflow sensor may be faulty, causing the engine to mismanage fuel or air intake.
   
6. Dirty or Clogged Fuel Injectors
   Over time, fuel injectors can become clogged with carbon deposits or dirt. This can cause irregular fuel delivery to the engine, leading to poor combustion and a subsequent loss of power. Cleaning or replacing the fuel injectors can restore the engine's performance.
   

Troubleshooting the Power Loss Issue
To properly diagnose and fix the power loss issue on the New Holland C185, follow these steps:

1. Check the Fuel System
   • Inspect the fuel filter for clogs or contamination. If necessary, replace the filter to ensure proper fuel flow.
     
   • Ensure the fuel lines are clear of any blockages or damage. If any leaks or cracks are found, replace the lines.
     
   • Verify that the fuel is clean and free of water. If the fuel is contaminated, drain the tank and refill with fresh, clean fuel.
     
2. Inspect the Air Intake System
   • Remove and check the air filter for dirt or debris. If the filter is clogged, replace it with a new one to restore airflow to the engine.
     
   • Inspect the air intake hoses for cracks or damage. Replace any parts that show signs of wear.
     
3. Examine the Hydraulic System
   • Check for any leaks in the hydraulic hoses and components. A leak can result in low hydraulic pressure, which can reduce overall power.
     
   • Inspect the hydraulic pump and motor for any signs of damage. If the pump is faulty, it may need to be repaired or replaced.
     
4. Inspect the Exhaust System
   • Inspect the exhaust pipe and muffler for blockages or carbon buildup. A clogged exhaust can prevent the engine from expelling gases properly, reducing its power.
     
   • Check the turbocharger for any signs of damage or excessive wear. If the turbocharger is not functioning properly, it can significantly affect engine performance.
     
5. Check for Electrical Issues
   • Inspect the wiring harness for any loose connections, wear, or corrosion. Clean or replace damaged wires as necessary.
     
   • Test the sensors, including the throttle position sensor and mass airflow sensor, to ensure they are functioning correctly. If any sensors are faulty, they should be replaced.
     
6. Inspect the Fuel Injectors
   • Remove the fuel injectors and inspect them for dirt or carbon buildup. Clean or replace the injectors as needed to ensure proper fuel delivery to the engine.
     

Real-World Example: Power Loss on a New Holland C185
A contractor working on a commercial project in Texas reported a sudden loss of power in his New Holland C185 while using a heavy-duty auger attachment. The loader was struggling to maintain RPMs and seemed to be losing power during operation.
After inspecting the fuel system and hydraulic lines, the contractor discovered that the fuel filter was clogged and had not been replaced in over a year. After replacing the filter and clearing the fuel lines, the machine's power was fully restored. The contractor also replaced the air filter as a precaution, since it had become clogged with dust during the heavy use.
Another example occurred in California, where a construction crew noticed that their New Holland C185 was sluggish during operation. Upon further investigation, they found that the air intake system was clogged with dirt and debris, restricting airflow to the engine. Cleaning the air filter and clearing the intake resolved the issue and restored full power.
Preventive Maintenance Tips
To prevent future power loss issues and ensure the longevity of your New Holland C185, regular maintenance is crucial:

• Fuel System Care: Replace the fuel filter regularly, and ensure that the fuel is clean and free of contaminants. Regularly check the fuel lines for leaks.
  
• Air Filter Maintenance: Inspect the air filter regularly and replace it if it’s clogged or dirty. In dusty environments, the filter may need to be replaced more frequently.
  
• Hydraulic System Check: Regularly inspect the hydraulic system for leaks and ensure the fluid is at the correct levels. Check the hydraulic pump and hoses for signs of wear or damage.
  
• Exhaust System Inspection: Clean the exhaust system periodically to prevent carbon buildup. Check the turbocharger for wear and tear.
  
• Electrical System Checks: Inspect the wiring and sensors to ensure they are functioning properly. Replace faulty sensors or wiring as needed.
  

Conclusion
Experiencing a loss of power in the New Holland C185 skid steer can be frustrating, but with proper troubleshooting, it’s usually possible to pinpoint the cause and resolve the issue. Whether the problem lies within the fuel system, air intake, hydraulic system, or electrical components, regular maintenance and prompt repairs will help restore the loader’s full power and prevent future issues. By staying on top of these maintenance tasks, you can ensure that your New Holland C185 remains a reliable workhorse on the job site.