Skip to Content

Ford F150 Low AC Refrigerant Symptoms

Ford F150 Low AC Refrigerant Symptoms

Refrigerants are compressed liquid that travels in the cooling unit to absorb heat from the air and blow the cold air into the interior cabin. Freon gas is the most common refrigerant used in Ford F150 air conditioning systems for cooling purposes.

Ford F150 low AC refrigerant symptoms include warm air, no sound from clutch engagement, ice on the evaporator coil, and greasy leaks under the truck. In addition, you can also face difficulty in attaining the set temperature, hear hissing and bubbling sounds, and the interior takes more time to cool. 

The low refrigerant levels become challenging for people while driving in the scorching summer heat. However, these do not blow the chilled air in the cabin and worsen the conditions for passengers and drivers during trips.

Warm air

The air ac vents are located on the front side of the Ford trucks, blowing the cold and warm air according to the temperature differences and making the passenger comfortable.

These blow the chilled air when you turn on the cooling system, while warm air comes from them during winter to make you warm and cozy.

Many people complain that warm air comes from the cabin filters when they turn on the air conditioning system. However, it is not a normal condition and represents malfunctioning in the air conditioning system of your Ford F150.

You can feel the warm air from the air filters because of the low AC refrigerant levels.

It comes in contact with the warm interior air and absorbs heat from them. The air becomes cold and travels through the cools, making the interior cold.

The sufficiently compressed liquid with high pressure cannot move through the coils when their levels are low. Therefore, these cannot cool the air because of the decreased level and warm air travel back into the cabin.

You do not need to make the expensive repair and hire a mechanic to inspect the system. Instead, it is better to check the refrigerant levels and refill them if these are low.

No sound of clutch engagement

The clutch is part of the compressor that connects and disconnects the compressors from the engine. The compressor clutch compresses and circulates the high-pressure refrigerants in the coils for cooling purposes.

You can hear the clicking sound from your trucks when you turn on the ac in the warm weather. Many people complain that they do not hear the sound after turning on the cooling system in their Ford F150 trucks.

You cannot hear the sound because the clutch does not engage and connects with the engine to circulate the refrigerants because of their insufficient levels.

The compressor clutch will not engage when there is insufficient liquid to compress and pressurize. It shows that ac cannot work when the compressor clutch does not engage.

Avoid turning it on and off because it can damage the compressor clutch, and it will not function.

Greasy leaks

The visible leaks in different areas represent low levels of refrigerants. The level decreases when these are seeping from the coils and faulty compressors.

The leakage from different areas significantly decreases their levels. The leakages come from the damaged rings, broken rubber seals, and gaskets in the cooling system.

The issue also comes when metal parts become susceptible to corrosion. Corrosion can produce holes and cracks in metal components, allowing the compressed liquid to pass through them.

The hoses can also crack over time and cause this problem. You can identify their leakage from their texture, which is greasy.

You can see greasy liquid under the hood and near the compressor. Moreover, you can also see colorless liquid under your trucks when you park them.

It appears to be a greenish-yellow liquid under fluorescence or UV light. However, I detect the AC refrigerant leakages from their fruity and sweet smell.

Smell the liquid under your pickups; the sweety odor represents the freon gas. It is necessary to repair the leaks quickly because it is hazardous and harmful to humans.

Avoid smelling the liquid because it is toxic for humans when inhaling or ingesting them. Turn off the ignition of the Ford F150 because these are flammable and produce a massive explosion.

Ice on the AC evaporator coil

Many people complain about the frost and ice on their evaporator coil and other AC components in Ford F150. Ice on the coil is the major symptom of low levels of refrigerants.

The temperature of these liquids comes lower than their maximum range when their levels become low. Therefore, you can see the ice on the refrigerant lines because of the low temperature of these compressed liquids.

In addition, you can also see water near them because of ice melting. Removing the ice buildup with your hands is unnecessary because it can produce damaging effects.

Call certified professionals to access the different ac components and resolve the low AC refrigerant symptoms.

Challenging to attain a set temperature 

The thermostat is located inside the Ford F150, which helps attain the set temperature. People set the required temperature on these devices and control the functioning of the heating and cooling system to achieve the maximum range.

The major symptom of low AC refrigerant is that the thermostat cannot achieve the set temperature. As a result, you cannot get the desired temperature according to the outside weather.

These devices cannot achieve the set temperature because of poor heat removal. The warm air moves inside and causes hindrance in attaining the maximum temperature.

Avoid dealing with thermostats because the issue comes from the low refrigerant liquids.

Hissing and bubbling sound

Many people also complain about the hissing and bubbling sound from the Ford F150 air conditioners. However, the cooling system does not usually produce uneven sounds when you turn them on.

You can only hear the click sound, which occurs because of the engagement of the compressor clutch for circulating the liquid in the coils.

The unusual hissing and bubbling sound represent malfunctioning in the system. These represent the low levels of refrigerants because of leakages.

You can hear the hissing sound when these escape from the worn-out gaskets, seals, and hoses. The continuous hissing represents the escape or removal of liquid gas from the different components.

Moreover, bubbles form in the coils when air and moisture from the outside mix with these liquids and ruin their functioning.

You can see bubbles on the cracked end because of the mixing of refrigerants and moisture.

More time to cool interior

Ford F150 AC takes more time to cool the interior in extreme summer seasons due to low AC refrigerant. You cannot feel comfortable while sitting inside because of the warm temperature.

In addition, it can also affect the functioning of cooling system parts when they work harder and consistently to cool the interior.

It also increases the fuel cost because air conditioners constantly run to cool the interior. However, these cannot remove the heat to the outside because of insufficient levels of refrigerants.

The hot air remains inside and makes the interior cabins warmer. Turn off the AC because it can consume the gas from your Ford F150 without making the interior cool.

Related Articles:

Steps to Adjust Screen Brightness on Ford F150

Ford F150 Doors Won’t Close When Cold