Troubleshooting the Bobcat T190: What to Do When Your Skid Steer Won’t Start

[MikePhua]

The Bobcat T190 is a well-known and widely used skid steer loader in the construction and landscaping industry. Like any piece of heavy equipment, it’s built to withstand tough conditions, but it can still experience issues that make it hard to start. If you find yourself in the frustrating situation of your T190 not starting, there are several common reasons behind this problem. In this article, we’ll explore the possible causes and troubleshooting steps, ensuring that you can get your skid steer back to work quickly and efficiently.
Understanding the Problem: Why Won’t the Bobcat T190 Start?
When a skid steer like the Bobcat T190 fails to start, the issue could stem from several potential areas. Here’s a breakdown of the most common causes and how to diagnose them.
1. Battery and Electrical System Issues
One of the most common reasons a Bobcat T190 might fail to start is an issue with the battery or electrical system. If the battery is dead, weak, or corroded, it won’t provide enough power to turn over the engine.
Signs of Battery Issues:

• No lights or display on the dashboard.
  
• Clicking sound when turning the key.
  
• Slow cranking or no cranking at all.
  

Troubleshooting Steps:

• Check the Battery Voltage: Use a multimeter to check the battery’s voltage. A healthy battery should read around 12.6 volts when fully charged. Anything lower may indicate a dead or dying battery.
  
• Inspect Battery Terminals: Corrosion around the battery terminals can prevent proper electrical contact. Clean any corrosion and tighten the connections.
  
• Test the Alternator: If the battery seems to be in good condition but dies quickly, the alternator may not be charging the battery correctly. Have the alternator tested to ensure it’s providing the correct voltage.
  

2. Fuel System Problems
Another common issue that can prevent your T190 from starting is a malfunction in the fuel system. Without proper fuel delivery, the engine won’t fire. This can be caused by several factors, including clogged fuel filters, a dirty fuel line, or a malfunctioning fuel pump.
Signs of Fuel System Problems:

• Engine cranks, but doesn’t start.
  
• Fuel filter light comes on.
  
• You smell fuel but the engine doesn’t turn over.
  

Troubleshooting Steps:

• Check the Fuel Filter: A clogged fuel filter is a simple yet often overlooked issue. If the filter is dirty or clogged, it will restrict fuel flow to the engine. Replace the filter as needed.
  
• Inspect Fuel Lines: Fuel lines can sometimes become clogged with dirt, rust, or debris. Check the lines for any visible obstructions.
  
• Test the Fuel Pump: If the fuel system is not delivering the required pressure, the fuel pump may be faulty. You can test the fuel pump’s pressure using a gauge to see if it’s providing the correct fuel pressure.
  

3. Starter Motor and Relay Problems
The starter motor is responsible for cranking the engine and getting it to fire up. If the starter motor or relay is faulty, the engine may not turn over when you try to start it.
Signs of Starter Motor Issues:

• A faint clicking sound when trying to start the machine.
  
• No noise or action when turning the key.
  

Troubleshooting Steps:

• Test the Starter Motor: If you hear a clicking sound, the starter motor may be malfunctioning or may not be receiving enough power. If you have access to a multimeter, you can test the starter motor’s voltage.
  
• Check the Starter Relay: A faulty starter relay can prevent power from reaching the starter motor. Try swapping out the relay with a known working one to rule out relay failure.
  
• Inspect the Solenoid: The solenoid, which is responsible for engaging the starter motor, could be damaged or worn out. Check for any visible signs of damage or wear.
  

4. Ignition System Problems
The ignition system is what sparks the fuel and air mixture in the engine. If there’s an issue with the ignition system, the engine may fail to fire. This includes problems with the ignition switch, wiring, or the spark plugs.
Signs of Ignition System Problems:

• No power when turning the key.
  
• The engine turns over but doesn’t start.
  
• A check engine light is on.
  

Troubleshooting Steps:

• Inspect the Ignition Switch: If the ignition switch isn’t functioning properly, it may not be sending power to the starter motor. Check the switch for continuity.
  
• Check the Wiring: Over time, the wiring can wear down or become corroded. Inspect the wiring for any visible damage or loose connections.
  
• Test the Spark Plugs: If the engine turns over but doesn’t start, check the spark plugs. Worn or dirty spark plugs can cause the engine to fail to ignite the fuel.
  

5. Hydraulic or Safety Switches
Skid steers, including the Bobcat T190, often have built-in safety features that can prevent the engine from starting if certain conditions aren’t met. These safety switches include hydraulic pressure switches, seat safety switches, and the parking brake switch. If any of these switches are faulty or if the hydraulic system is under pressure, it could prevent the machine from starting.
Signs of Safety Switch Issues:

• The engine cranks but won’t start.
  
• The machine doesn’t start unless specific controls are in a certain position (e.g., seat or parking brake engaged).
  

Troubleshooting Steps:

• Check Safety Switches: Verify that all safety switches, such as the seat switch or parking brake switch, are functioning correctly. If any are stuck or malfunctioning, it may prevent the engine from starting.
  
• Check Hydraulic System: If there’s too much pressure in the hydraulic system, it could prevent the engine from cranking. Ensure the hydraulic system is properly depressurized.
  

Conclusion
The Bobcat T190 is a versatile and durable piece of machinery, but like all equipment, it can encounter starting issues. By troubleshooting common problems—such as battery failure, fuel system issues, starter motor problems, ignition system malfunctions, and safety switch failures—you can systematically identify the cause and get your machine back to work.
Remember, regular maintenance and quick attention to these problems can save you time and money in the long run. Always keep your machine’s owner’s manual handy and follow the manufacturer’s recommendations for preventive care. And when in doubt, don’t hesitate to consult a professional technician to ensure the health and longevity of your Bobcat T190.