Car Air Conditioning Repair: Troubleshooting

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What is “Black Death?”

Although the Black Death is not the same as the devastating virus that swept through Europe in the fourteenth century, a car’s air conditioning system will become infected just like the plague. After refrigerant degrades, Black Death begins inside the compressor. Since refrigerant functions as a working fluid, similar to how motor oil provides lubrication to safeguard the engine, a breakdown will cause unsightly wear, beginning in the compressor.

From there, the corrosive metal fragments produced by compressor failure can enter the remainder of your air conditioning system and cause havoc across the entire system. Before you realize it, the airflow and all of the cold air will be long gone. Read : Why did my ac stop working in my car

An A/C Performance Check is your best line of defense against the Black Death.

Why Does My A/C Have Weak Airflow?

We sympathize with your suffering due to poor airflow. Any of us would go mad just from the perspiration. However, there are numerous variables at work. Take the correct action and have it checked at if you observe reduced airflow early on rather than later to prevent further potentially disastrous A/C system damage.

Main reasons for poor airflow:

  • The evaporator core may have developed mold or mildew as a result of leftover moisture during the cooling operation. Your air vents won’t receive enough air when this happens.
  • There is a loose hose.
  • The exhaust fan has burned out. Air won’t flow very well if the fan is not blowing.
  • Seals (Not those seals by the dock, please). Air flow may reduce due to leaks in core case seals and evaporator, or blower house seals. Because they are so delicate, A/C ventilation systems must remain sealed. The moment they are opened, the entire system is put at risk.

Are There Any System Indicators That Might Notify Me Of An AC Issue?

The majority of the cars, no. However, some cars include Driver Information Centers (DIC) that could provide the status of a variety of car systems. For more details, read your owner’s manual.

Why Isn’t My Air Conditioning As Cool As It Used To Be?

There are several causes for an air conditioning system to lose its cool. As soon as you begin to experience this alert, bring your vehicle to the dealer; delaying could result in the need for a larger repair. Here are several things that could make your AC lose its cool.

The A/C is not cool as it used to be because of some of these reasons:

  • An o-ring, hose, seal or component failure leading to a Freon leak
  • A blocked charging hose or expansion tube for the refrigerant
  • Failure of the compressor clutch
  • Blower motor failure or a faulty blower motor resistor
  • Damaged or malfunctioning evaporator or condenser
  • Vacuum leaks
  • Faulty solenoid, blend door, fuse, relay, control module, or switch

Leaks may cause great harm. An “open system” is what you have when an air conditioning system starts to leak. Your repair will be less expensive if you or your expert find the leak quickly. Unfortunately, moisture will have probably infiltrated your A/C system and may have harmed other crucial and expensive parts if a leak has been damaging your cool air for a while.

The Air Conditioner Starts Out Cool And Then Gets Warm, What is The Problem?

There is never just one right answer, as is the case with many complex stories. A/C units are a temperamental lot. The best course of action for any of the following listed symptoms is to have the dealer examine your system.

From cold to hot, including all associated symptoms:

  • The clogged expansion valve: Your evaporator receives the correct amount of refrigerant through the expansion valve. The refrigerant cannot flow into the evaporator if the valve is closed. If there is moisture present and the valve is clogged, the refrigerant will begin to freeze the valve completely.
  • Compressor clutch malfunction: If your compressor’s clutch isn’t engaging, it won’t be able to maintain the proper pressure. This will cause hot air.
  • The case of the blown fuse Sometimes fuses short out. Your A/C system’s fuse could blow, cutting off power to some components.
  • The worst enemy of an air conditioning system is a leak, which can occur due to corrosion or moisture buildup. Unpleasant corrosive acids will eat away at seals and components when moisture and refrigerant combine, leading to a leak.

What is The “Gym Locker” Smell Coming from My Air Conditioning Vents?

It appears that you are dealing with an odor issue. There are a few problems that could be the source of this odor.

The Main Causes of “Gym Locker” Smell

  • Outdated and dirty air filter in the cabin.
  • Evaporator case with mold. Water accumulating in the evaporator case due to a clogged case drain is a problem for many cars. Mold will build up and turn into something worse.

How Can An AC System Leak Be Detected?

Discovering an A/C system leak is pretty tricky, but here are 2 methods of finding an AC system leak that you might want to know.

Finding leaks

  • Black light-activated dyes. You read correctly. Many refrigerants are pre-mixed with a unique UV dye that glows when illuminated by black light. Your A/C system will be examined using a black light to detect whether any dye is present.
  • Invite the “sniffer” in. A sniffer is a unique tool that focuses on the chemical constituents of the refrigerant.

What Causes An A/C System Leak?

Age and humidity In a nutshell. Additionally, with time, rubber hoses and seals can degrade and lose their elasticity, allowing moisture and Freon to leak into your car’s A/C system. Moisture is the deathblow for your air conditioning system because it mixes with the refrigerant to form a corrosive acid that destroys the system.

Just a quick fact: Moisture can harm your accumulator, receiver, or dryer. Keep in mind that once exposed to an open system, these devices that remove moisture from the A/C system will eventually stop working (leak or crack).