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It sounds like you've already taken several steps to troubleshoot the issue with your New Holland TC48DA's glow plug system. Here are a few additional suggestions to help diagnose and resolve the problem:

Check the Glow Plugs Themselves: Sometimes, glow plugs can fail or become worn out, causing the glow plug indicator light to stay on. You can test the glow plugs by removing them from the engine and inspecting them for damage or wear. Additionally, you can test their resistance with a multimeter to ensure they are within the manufacturer's specifications.

Inspect the Glow Plug Controller: The glow plug controller (also known as the glow plug relay or module) is responsible for controlling the operation of the glow plugs. Even though you've replaced the heater relay, there could still be an issue with the controller itself. Check the wiring and connections to the controller and ensure that it is receiving power and signals from the ignition switch correctly.

Test the Glow Plug Circuit: Use a multimeter to test the continuity and voltage of the glow plug circuit. Start by checking the voltage at the glow plug relay when the ignition is turned on. If voltage is present, the relay should activate and send power to the glow plugs. If voltage is not present, there may be an issue with the wiring, ignition switch, or other components in the circuit.

Inspect the Engine Coolant Temperature Sensor: The glow plug system is often controlled by inputs from sensors such as the engine coolant temperature sensor. If this sensor is faulty or sending incorrect signals to the controller, it could cause the glow plug indicator light to stay on. Test the sensor's resistance and voltage output to ensure it is functioning correctly.

Check for Faulty Grounds: Poor or corroded ground connections can cause electrical issues, including problems with the glow plug system. Inspect the ground connections for the glow plug circuit and ensure they are clean, tight, and free from corrosion.

Consult the Service Manual: If you haven't already, refer to the service manual for your New Holland TC48DA tractor. The manual should contain detailed troubleshooting steps, wiring diagrams, and diagnostic procedures specific to the glow plug system.

If you've exhausted these troubleshooting steps and are still unable to resolve the issue, it may be best to consult with a qualified technician or mechanic who has experience with New Holland tractors. They can perform a more thorough diagnosis using specialized tools and equipment to pinpoint the exact cause of the glow plug problem.

New Holland TC48DA Glow plug heater light stays on
New Holland Tractors
Replies 2 Post by gardenveggie

It sounds like you've already done some thorough troubleshooting on your Gator, but there are a few more things you can check to try and resolve the stalling issue:

Check the Fuel Lines: Ensure that the fuel lines are properly connected and free from any obstructions. Sometimes, a blockage or kink in the fuel line can restrict fuel flow and cause stalling.

Inspect the Carburetor Settings: Even though you've replaced the carburetor, double-check that the carburetor settings are correct. This includes the idle speed, mixture settings, and choke operation. Improper carburetor adjustments can lead to stalling issues.

Clean or Replace the Spark Plug: A fouled or worn spark plug can cause poor engine performance and stalling. Remove the spark plug and inspect it for signs of fouling, such as black deposits. Clean or replace the spark plug as necessary.

Check for Vacuum Leaks: Vacuum leaks can disrupt the air-fuel mixture and cause stalling. Inspect the intake manifold and carburetor mounting gaskets for any signs of leaks. You can also use a can of carburetor cleaner to spray around these areas while the engine is idling. If there's a leak, the engine RPM will change when you spray cleaner near the leak point.

Inspect the Ignition System: Ensure that the ignition system components, such as the ignition coil, spark plug wires, and ignition module, are in good condition. Faulty ignition components can cause intermittent stalling issues.

Check the Engine Compression: Low compression can cause poor engine performance and stalling. Perform a compression test to check the compression levels in each cylinder. If compression is low, it may indicate worn piston rings or cylinder head gasket issues.

Inspect the Throttle Linkage and Governor: Make sure that the throttle linkage and governor are functioning correctly. A sticking throttle or governor can cause erratic engine behavior and stalling.

If you've checked all of the above and the problem persists, it may be helpful to consult with a mechanic or technician who specializes in small engines. They can perform a more in-depth diagnosis and identify any underlying issues that may be causing the stalling problem with your Gator.

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Replies 3 Post by gardenveggie

My wife and I are going to retire soon and want to get a new place. She is a HGTV avid viewer and now is on a kick for a Bardominium. I have said I am not sure that it saves any dollars to build and that most are built on a slab which can be kinda cold. And all that lofty high ceilings are costly to heat. <br>
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Does anyone have one, and how do you like it.<br>
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Replies 2 Post by gardenveggie