What Should I Do If AC Compressor Clutch Is Not Engaging

What Should I Do If AC Compressor Clutch Is Not Engaging

If you get that the air conditioning (AC) compressor clutch is not engaging in your car, you might need to get some answers. In this article, you will learn what you can do during such a situation.

If the compressor clutch is not engaging, there are many possibilities. But you cannot use your air conditioning system when that happens. The compressor clutch is an integral element of your car’s AC system. So, rendering it inoperable is a great inconvenience for the passengers.

If your AC compressor clutch doesn’t engage, it means that your car will not be able to blow cool air into the vehicle. Even if you are using synthetic oil or coolant in your vehicle, the compressor clutch can get damaged due to some electrical problems too. Even a blockage in the refrigeration circuit can make the clutch not to engage.

Most cars currently use an electromagnetic AC clutch system to make the process of engaging and disengaging the AC compressor automatic. That makes operating the air conditioning system in your car more user-friendly and convenient. As you require the AC to work perfectly, we are going to give you the steps you need to take during such a situation.

But let’s first learn some aspects of an AC compressor clutch.

What is an AC Compressor Clutch?

An air conditioning compressor clutch gets its power from the flywheel of your car’s engine. It is controlled using a clutch system where its shaft is engaged and disengaged to a rotating shaft of the flywheel using an electromagnetic switch.

The compressor and the clutch are two of the essential parts of the air conditioning system of your car. These parts, together with other car components, should be maintained properly to ensure they are functioning correctly at all times.

How Does an AC Compressor Clutch Work?

To use the air conditioning on your car when you whenever you want, the clutch compressor is activated. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit.

The compressor clutch consists of a friction plate positioned adjacent to an electromagnetic coil. When the compressor clutch is engaged, a current move through the electromagnetic coil. That creates a strong electromagnetic force that pulls the coil in the direction of the friction plate and engages the pump rotor, which consequently runs the compressor.

How to Determine Whether the Compressor Clutch Is Working

If the clutch doesn’t engage with the compressor, the pump will not work. When that happens, there will be no coolant or refrigerant that will go around the air conditioning system to cool your car.

To check if the clutch is working properly or not, try using these methods:

  •         Turn on the air conditioning controls to maximum AC.
  •         Start the engine
  •         Look closer at the front of your clutch
  •         At this moment, the clutch and the pulley should be spinning
  •         If the pulley is the only rotating part, the clutch is not operating.

Important tips: If you are not an expert in car repairs. I’d suggest you work together with a Car Diagnostic Tool, according to Smart motorist, Most scan tools will plug directly into your dash and even send you notifications when there is an issue with your vehicle.   This is not just for AC Compressor issues but almost all issues related to the engine.

What Can Make The Clutch Not To Engage?

Below are some of the possible reasons why the clutch doesn’t engage with the compressor:

  •         Inadequate oil in the compressor
  •         Excess refrigerant
  •         Insufficient refrigerant
  •         Defaulting on lockout on the clutch sensor: Most modern cars have air conditioning compressor clutches that are turned on and off by the high pressure and low-pressure switches and the level of compressor oil through the fuse. These three aspects can disable the clutch to engage if the sensor notices that the compressor has insufficient oil, has excess refrigerant, or is low on refrigerant.
  •         Burnt fuse: To know whether the fuse is burnt, switch off the car engine and disconnect the fuse from the system. Check the fuse utilizing a multimeter or any other instrument that can detect its situation. If the fuse is not busted, return it to its original position.

What Should I Do If AC Compressor Clutch Is Not Engaging?

Here are some of the possible steps that you can take to correct the issue:

  1.      Checking the oil levels in the compressor

The compressor oil level can be easily seen from its display glass. Enough oil is shown by a red line in the display glass. If the level considerably drops below the red line, you need to add oil. Ensure that you add a type of oil that is compatible with your specific compressor. Use compressor oils that are approved by your air conditioning system’s manufacturer. You can check the specifications on the user’s manual.

  1.      Discharging overcharged refrigerant

If the compressor gets overcharged with a refrigerant, the system will read an abnormally high pressure. You can check the manual of your air conditioning system to determine the right operating pressure on the high-pressure side.

If you are certain that the compressor is overcharged, drain the refrigerant using a discharge valve positioned near the gauge. Bleed until you get the appropriate level of pressure.

  1.      Compressor too low on refrigerant

You should check if the level of coolant in the compressor is too low by checking whether the pressure gauge of the high-pressure side of the compressor registers a pressure that is lower than what is needed. You can check your car’s air conditioning manual for the right level of pressure.

There are repair kits for charging your refrigerant available, and they come with instructions on how to recharge the coolant.


It is not hard to diagnose the malfunctioning of your AC compressor clutch. You can determine if there is something wrong with the air conditioning system if something is not working. If the DIY tips don’t deliver the results, you can take the car to your mechanic and let him do a complete checkup of the AC system.

The AC compressor clutch is designed not to engage when there is something wrong in the system. Therefore, the next time the clutch is not engaging, check these elements occasionally to avoid issues:

  •         Compressor oil,
  •         Coolant or refrigerant
  •         Fuse

We hope that the article was helpful!

source: https://www.blogcadre.com/what-should-i-do-if-ac-compressor-clutch-is-not-engaging/

A Memory of Liverpool

If you hear someone mentioning Leuerepul, Lyuerpole, Lytherpol or Litherpoole, most likely they are referring to one thing-Liverpool, a UNESCO world heritage site. Situated at the intersection of River Mersey and the Irish Sea, the maritime mercantile City of Liverpool has been in existence for more than 700 years ago.  As such, you won’t be wrong if you expect it to be rich in nostalgic history.

Walking down the memory lane of this beautiful city, you’ll be amazed to have a slight touch with the revolutionary occurrences that have taken place here. Here are some of the heritage sites that offer a sneak view of the history of the city:

Pier Head & The Three Graces

If you want to have a view of the world’s most beautiful skylines, simply visit Pier Head & the Three Graces in Liverpool.  The property contains three majestic buildings namely the Port of Liverpool Building, The Cunard Building as well as the Royal Liver Building. 

On the Western side of Cunard Building stands Cunard War Memorial which was erected as a reminder of the Cunard employees who lost their lives or went missing during the First and the Second world wars. The effects of the war were devastating and this monument rekindles memories of the victims. On top of the moment features a man standing directly above a Roman ship’s pow.  He’s surrounded by ropes, anchors, and shells, among other things that the navy used to hold a captive. The man symbolizes victory. The monument is one of the iconic sculptures done by Henry Alfred Pegram and its design matches the Cunard Building’s Greek features. 

As you approach the waterside of Pier Head, you’ll see a Telescope sculpture that was erected for the commemoration of late Jeremiah Horrocks. Horrocks came from Toxteth, an interior city area of Liverpool was a prominent astronomer in the 17th century. He was the first person to demonstrate how the moon moves around the earth following an elliptical path.

Next to the Horrocks’ sculpture, you’ll also see a monument made by Sir William Goscombe John for the commemoration of King Edward VII, a King of the United Kingdom and Emperor of India during the 19th and early 20th centuries.  The monument shows the King sitting on horseback relaxed but in a resolute pose.  The monument will give you a slight idea about the personality of the king. 

Museum of Liverpool

Museum of Liverpool demonstrates the unique geography, history as well as the culture of the iconic city of Liverpool. It contains items such as costume, decorative art, and botanical collections as well as archaeological materials that represent that give someone a glimpse of how far the city has come from. Photographic archives are also present for further demonstration of the history of the city. Prominent personalities like Yoko Ono, Sir Peter Blake and Noel Fielding come here to celebrate the milestones that the city has achieved.

The Beatles Story

The Beatles Story is the largest permanent exhibition in the world. The award-winning museum is dedicated to telling the story about the Beatles and their history; how they rose to fame.  It is nestled at the Albert Dock on the beautiful waterfront of the UNESCO World heritage. The award-winning museum takes its visitors many years back on a journey about the lives, culture, music as well as the times of the Beatles, a very popular English rock band that was formed in the early 1960s in Liverpool.

The museum hosts the Casbah and the Cavern clubs as well as Abbey Road Studios, some of the major landmarks in their musical journey.  In the museum, there’s also a collection of the musical instruments that the band that originally used, John Lennon’s New York piano and spectacles, the original lyrics of their songs, their old photos, rare albums and Ringo Starr’s drum kit.

Those are not the only items that you’ll see in this museum; there’s also a comprehensive authentic replica suit set to mark the release of Sgt Pepper which took place in 1968 and an array of things depicting the history of British Invasion as well as the solo careers of each of the Beatle.

The Beatles Story is among the best tourist attractions in the United Kingdom and more than 4.5 million people had visited it by the year 2018.

World Museum

World Museum contains thousands of exhibits from different continents worldwide to give a glance of what happened millions of years ago at different places of the world. You’ll also see live demonstration of different activities that used to take place in ancient times in Liverpool and other places.

 Ancient Egypt is the newest component of the museum. In this section, you’ll encounter A Journey Through Time gallery which will take you on an adventure of last 5,000 years in Egypt. You’ll experience the myths, mysteries and rituals of the ancient inhabitants of the land of the pharaohs and other things which you perhaps learn about from the Bible and historical books.

Other components of the museum include Weston Discovery Centre which gives amazing insights on human history as well both in Liverpool and beyond. Once you are done with your exploration of the museum, have a delicious meal at a new café which is within its confines as you mesmerize the day’s exciting experiences.

The Walker Art Gallery

The Walker Art Gallery is one of the best art galleries in Europe, hosting various Europe’s renaissance masterpieces including paintings, sculpture and decorative arts. These items span over six hundred years and feature amazing works by Rubens, Gainsborough, Rembrandt as well as Poussin. Other outstanding ancient items include Tudor portraits and Victorian and Pre-Raphaelite art collections.

The Walker Art Gallery has been a host of the most outstanding art collections in Liverpool for over 130 years. Other than the ancient outstanding art collection, the gallery also features contemporary art by popular artists like David Hockney and Lucian Freud

You now know where to go when you want to get in touch with the history of Liverpool. A visit to the above places will give you an incredible experience.