In Houston, TX, we know how hot it can get in summer, and that means you need your trusty AC to cool you down. Over time, components can get damaged or worn, and the AC in your Lincoln Navigator may blow hot air or refuse to work. We’d like you to know a few signs you need to visit us for AC maintenance.
Signs Your Lincoln Navigator Needs AC Maintenance
Cold Then Hot Air
If your AC blows cold air and then switches to warm air without warning, your AC has a problem. Refrigerant is essential for cooling the air drawn in from the outside. This gas is converted to a liquid to absorb water from the air. The refrigerant then passes through the expansion valve where the pressure is dropped, and the refrigerant turns back into a gas to chill the air so it can be blown into your cabin.
A leak into the AC system can allow water to drip onto the expansion valve. If this happens, the water will instantly freeze due to cold refrigerant and block the valve. Without a working expansion valve, the AC can’t cool the air and your cabin will rapidly warm up. Our technicians will examine the AC and repair the leak. Then we’ll clear the expansion valve, and your AC will produce cold air again.
Leaking Refrigerant
As we saw above, refrigerant is vital for your AC. This colorless, odorless gas is pressurized as it moves through the AC, and even a small hole in the system can cause a rapid refrigerant loss. As this gas is lost, the air from the AC will warm up regardless of the dial setting. In addition to the rapidly warming air, low refrigerant levels can damage the compressor, the pump that allows the AC to work.
You can’t see refrigerant as it evaporates instantly in contact with the outside air. We add a UV dye to the AC system, then use a UV viewer to trace the refrigerant’s path until it reaches the leak site. Once we’ve found the leak, we’ll seal it and refill your refrigerant.
Blocked Vents
Air enters the AC through a vent below your windshield, and it’s easy for this vent to become blocked by dirt, mud, or leaves. A blocked vent will prevent the AC from working as air won’t reach it to be cooled. If this is the problem, we can fix it in minutes, and your AC will work normally again.
The vents leading into your cabin can also become blocked by dirt, leaves, and other debris brought into the AC with the air. This debris will accumulate and restrict airflow into your cabin. We can quickly fix this issue by clearing the vents.
If you have an AC problem, contact our service department today at West Point Lincoln in Houston, TX.
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