how to manually engage ac compressor clutch, The 7 Best Car Batteries For The Money in 2021. Open the hood and look at the serpentine belt to locate the AC compressor. Everything You Need To Know! The AC compressor will not have power and the AC system will not function. If the power and ground checks out in the relay socket, test the relay by swapping in a similarly sized relay. When the coolant level in the system goes down, the low-pressure switch does not allow the compressor to rotate. White Smoke From Exhaust: Main Causes and How to Fix. 10 Best Tire Companies In The World [Updated In 2021]. Nope just how to check the clutch electrically In almost every instance when the clutch fails, it becomes burnt and discolored. Is there anything else I should try before I bring it to a shop? Be certain and use the right sized connectors to conduct this test. The A/C compressor is the heart of the system, and without a good compressor, the unit will not function. The black wire on the compressor clutch connector is the power wire. Using low-quality oil could be a reason for failing AC compressor clutch but it could happen even if you use synthetic oil and high-quality coolant. July 5, 2016, 11:25pm #2. If the ac clutch is working but the gauges show equal pressure, the compressor … I ran a #12 wire to the battery, I figured I was pretty safe with a 10 amp fuse. OK, with a/c on and engine running there is power to the switch on the accumulator. Low level of refrigerant. Turn the engine on. Touch the other wire to the positive side. Your car should be running with the AC on to check the compressor clutch. Rather, you will see friction of the belts. Is the clutch coil getting current to it when you turn the AC on? Now, listen for the clutch and the compressor and check if they engage. I think the car stalled because the A/C seized up. You can also check the high and low-pressure switch of it. Today when I was coming back home from work the AC worked. Use a digital voltmeter to measure the ground and voltage of the battery at the detached connector cable. How Long Do CVT Transmissions Last? I was playing with the headlights switch and I started to feel nice cold air then I stop to visually check and sure enough the compressor was working. Condenser: Usually mounted forward of the radiator, the condenser looks like a thinner radiator. All three wires should read inactive. It will supply the battery voltage to the compressor clutch, allowing it to engage manually. a) Overcurrent - Short circuit within field coil or in compressor circuit. Voltage Test: Remove the plug from the clutch coil and activate the A/C system by placing the selector on cold. When this component does not work properly, the engine does not get the cold air flow – leading to some major complications. In a few car models, the power of the air conditioning system flows from the AC switch to the fuse before being transmitted to the clutch oil through the low-pressure evaporator temperature. In a few cases, the clutch does not engage due to a clogged refrigerant circuit. Jump the a/c pressure switch, and it should engage. (4) bad compressor clutch. Keep it safely away from all other components. As above, check the pressures in the system, and then see if the compressor clutch gets +12v when you engage the switch in the dash. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. Finally, check system performance. SOURCE: 2002 Dodge Durango makes a noise when the ac is It's the clutch or compressor or the idle pulley for the belt for the AC to check it have someone start it with the hood open and use a broom handle pressed to your ear and put the end of the broom near the ac compressor and turn it on and see if you here it there then shut it off and check near the idler pulley to see if it's there. Release the clutch by removing the positive wire. To check AC compressor clutch air gap, simply insert a feeler gauge between the clutch plate and pulley with the engine off. If you want to do a quick test with the compressor out of the car already, you can jump the power on the compressor with 12v and a ground. A Open the hood and look at the air conditioning compressor… I hear the clutch is part of the compressor unit and is not servicable. Check for power AND ground to the compressor. Finally, check system performance. Also, find out whether the clutch and the pulley are spinning. Start the truck with the a/c off Note the sound of your engine bay If you have a buddy to help, have them turn the ac on while you watch the compressor If it clicks and engages clutch, you should be able to tell if its locked up. There is no need to switch on the air conditioning system for this method to work. Knowing when your AC compressor is running or not is critical to diagnosing the AC system, but also for charging the system. If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil. Move on to the clutch relay if the fuse turns out fine. What is the most common reason for an air conditioning compressor not to engage? Driving a Toyota Land Cruiser: Why Is It Appealing? Proudly installing things where they're not … Now look at the pulley of the air conditioner compressor. The Compressor is not meant to run all the time. The pulley moves freely, because the clutch is disengaged with the engine off. Check the owner’s manual to check the correct instructions for checking up the compressor oil and level and filling it up. You have to make sure that the compressor has enough oil to function properly. A Open the hood and look at the air conditioning compressor. Now to check if the clutch engages or not you will have to grab a lead to figure out this. Is there an easy way to tell whether the A/C clutch failed, or the compressor? If the bearing or clutch have failed, it is recommended that the compressor … Stand in front of the AC compressor at the front of the engine. Take the fused jumper wire and connect its one end to that side of the wire connector that was connected to the compressor. Normal current should be 3.6 - 4.2A at 12VDC. His work includes instruction manuals, lesson plans, technical brochures and service bulletins for the U.S. military, aerospace industries and research companies. If you tap any part of your A/C compresser weather its the casing or even the clutch pully, that does damage to the yoke inside the compressor, I dont mean to be a dick or aything but just being a mechanic doesnt mean anything, I do A/C work, Im 608 & 609 cert. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, "Truck and Van Repair Manual", Chiltons: 1993. Bad for the car to start with compressor on? Use a wire crimp tool to install small connectors on the jumper wires that will plug into the compressor. Check your belts to ensure there is proper tension and the belts are not damaged. Before I do, is there anything else you want him to know? The AC clutch is on the front of the compressor where the belt rides. Start the engine and let it warm up. If this happens, quickly remove the wire and replace the compressor. How do you check AC compressor clutch to see if its bad. Remove the relay from the socket. Checking to see if the compressor clutch is engaging is a simple visual inspection. Turns out there are 2 switches in the … Now you have to open the hood and examine the AC compressor. Because of the way an AC system works, the engagement of the compressor is cycled based on … AC compressor intermittent operation causing weakened or intermittent cooling performance. Check the resistance of the field coil for the compressor clutch (there is a harness with 1 pin that comes off the compressor and heads up the radiator fan assembly - check the resistance between that pin and the housing of the compressor - it should be around 4 ohms or so - if it's a lot higher, the field coil/solenoid needs to be replaced. Engaging the AC compressor clutch at home is not rocket science. Just adding refrigerant will solve this problem. Step 4: Inspect the clutch located at the front of the AC compressor and make sure the clutch rotates freely. And the faster the engine turned, the more pressure the compressor developed. A bad AC compressor clutch needs immediate fixing. How To Reset Check Engine Light: Follow These 4 Easy Ways! Nick, I found the clutch kit on ebay for $82.50 shipped. Step 1: Check the clutch. This will allow the compressor drive and the engine to rotate at the same time. Unplug the compressor connector. Your email address will not be published. Route the wires directly to the vehicle battery. Check the compressor clutch coil If you have power and ground at the compressor clutch, check the compressor clutch coil for open, resistance, short to ground and short to power. Take Advantage Of These Ten Easiest Cars To Work On, Top 6 Causes of Steering Wheel Hard to Turn and Solutions, Symptoms of a Bad Variable Valve Timing Solenoid and How to Replace, 4 Different Types of Burning Smell From Car: Main Causes and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032. The next section tells you how to manually engage AC compressor clutch at home. Want to Discharge Car AC at Home? If your air conditioning isn't working properly, you may need to replace the A/C compressor clutch to fix the problem. Check your belts to ensure there is proper tension and the belts are not damaged. When you turn your air conditioning on, the A/C compressor clutch is the first part to move. What Is Shift Lock Release And How To Use It? An AC clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. The clutch wire felt broken along its length. Unplug the wire feed at the AC compressor connection. When I got home I was checking things under the hood and the refrigerant pressure was fine (pressure according to chart observed in gauges). Compare the reading to factory specifications. It consists of guidelines and diagrams for various types of wiring techniques along with other products like lights, home windows, and so on. This could also happen if the two, small connectors are touching each other. Turn the AC settings to the "on" position. Connect one of the wires, it doesn't matter which one, to the negative side of the battery. If the clutch coil shorts out, the positive wire may begin to heat when it touches the positive battery post. With the vehicle running, step on the clutch pedal and put the vehicle into gear. If the AC clutch fails to energize then it would mean that you have a problem with power, ground, thermal protector switch, or the magnetic clutch. When power is applied to the clutch it engages to turn the compressor. Examine the A/C clutch with a flashlight. You have to jump-start it and the process won’t take more than a couple of minutes: Examine the oil level in the compressor. I have an open coil. Using a DVOM set to the ohms scale, disconnect the electrical connector to the clutch coil. That is why the clutch assembly is necessary. I jumped across the plug and compressor clutch engaged. Start by turning the engine on. 99 Figured the worst that could happen it I could finish off the dying clutch coil. Part 1 of 1: Test the clutch. (3) bad A/C compressor relay (which you have already checked it seems). Refer to this relay diagram to determine which pins in the socket should have battery voltage when the key is in the RUN position and which should have ground when the high and low pressures are within limits.. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. I think the car stalled because the A/C seized up. The AC compressor clutch will not activate when plugged into the original harness, even though power is coming from the dash switch. What does the second wire do? The system’s computer keeps the relay grounded but it can go on and off due to the bad switch. This is important because the pins on the compressor connector are small, so select connectors that will fit in the compressor plug and not short out by touching each other. Tips – You should route the jumper wire to avoid it getting tangled or interfering with other moving components. I’d leave the AC siwtch on all the time. How to manually engage AC compressor clutch when the system is low on antifreeze? Tips – When you are going to manually engage the compressor, make sure that the system has enough oil. A delay can cause serious damage to the air conditioning system and the engine. Knowing when your AC compressor is running or not is critical to diagnosing the AC system, but also for charging the system. Most importantly, a bad ac compressor can prove to be dangerous. so I looked for fuses and what not but that wasnt the problem. (too much load on the engine?). Command … … To check if the clutch is working properly or not, try using these methods:         Turn on the air conditioning controls to maximum AC. The middle wire should read "hot." A careful inspection of the system and its components will help you to pinpoint the source of trouble. The AC clutch is the same basic design as an electric PTO clutch. Inadequate lubrication can damage the compressor. How-To Test For Ac Compressor Clutch Function – Youtube – Kenworth W900 Wiring Diagram Wiring Diagram includes several comprehensive illustrations that display the connection of various things. How do you check AC compressor clutch to see if its bad. Step 1: Check the clutch. You may just need a clutch coil to repair it. The other cause of AC compressor failure is refrigerant leaks. Compressor Clutch. Part 1 of 1: Test the clutch. If you have any problem with the AC compressor then they will not engage. The Best TOAD Vehicles for Frequent Campers. You … Afraid if there’s other issues, I’ll blame them…, So I could do the clutch removal, grinding and replace. So replacing compressor, which any garage I spoke to would do – they don’t want to replace parts on the compressor like coil… not worth their time? In these instances, replace the compressor assembly. Add oil if the level is below the normal point. I would leave it like that till the fall, then add a spacer or something so the clutch isn’t engaged. or $3K at most? Test for AC Compressor Clutch Function. I dont have guages to check pressure so I googled and found an article about a Ram with similar problem. Remove the AC relay and in the relay socket, place a small jumper wire between pins 50 and 52 (check underneath the relay to identify the pins). Measure the current draw when the clutch is engaged. Sadly at over 400 mega ohms the clutch coil has failed. Touch the test light to each of the three AC clutch wires. The clutch is driven by a drive/serpentine belt, which engages the compressor when you switch on the AC. Look into This! Check the front side of the clutch to examine its condition. I read somewhere that a guy bought a used compressor and just used the clutch but that was one guy. The clutch wire felt broken along its length. If your car is compatible with R134a type of refrigerant, attaching a can to the system will override the low-pressure switch and restore the normal function of the compressor clutch. I have just refilled my C202 AC……….now my fan turns on and off with some noise whenever i turn on the AC,what could be the problem. b) No current - Open circuit. how to manually engage ac compressor clutch. With the vehicle running, step on the clutch pedal and put the vehicle into gear. Tsukasa Azuma is an awesome car blogger of Car From Japan. Any downside? Before checking to see if a clutch needs to be replaced, see if it is engaging and disengaging properly. Mechanic's Assistant: Okay, I'll connect you to the mechanic to walk you through that for your Chevy. If the battery voltage is present at the plug, test the coil for resistance. AIR CONDITIONING COMPRESSOR CLUTCH. The compressor is usually located towards the front of your engine, just inside the grill of your car. In this video, I show you how to tell if a car's AC compressor clutch is engaging. Mechanic's Assistant: Okay, I'll connect you to the mechanic to walk you through that for your Chevy. So it’s worth maybe $2.5K? Using the 20 volt setting on the DVOM, check for battery voltage at the harness connector. This is most of the time located on the side or top of the compressor and is typically 2, sometimes 3, wire harness. My AC isnt working, the clutch wont engage. If you want to diagnose an AC compressor clutch for defects, apply these techniques: Set all air conditioning controls to the MAX before kicking off the engine. I had no other choice, I had to narrow down my problems from TIPM, low freon, bad clutch, or bad compressor. Nope just how to check the clutch electrically What’s your thoughts on grinding down the clutch plate so it’s always engaged to the pulley / always turns the compressor? The electromagnet does not rotate like the clutch does. If the circuit tests normal, test or replace the A/C clutch. Test for AC Compressor Clutch Function. Moreover, because of being passionate to learn about the recent happenings in auto industry, he doesn’t only provide great car maintenance tips, he also always updates latest trends in among car brands and share them in his own interesting viewpoint. An automobile can have numerous serious problems and a dysfunctional AC compressor clutch is one of them. The Answer. If your air conditioning isn't working properly, you may need to replace the A/C compressor clutch to fix the problem. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, How To Manually Engage AC Compressor Clutch: The Easiest Methods, 11 Signs Your Car Is NOT Shifting Correctly, 9 Ways You Are Unconsciously Wasting Money on Car, 6 Commons Symptoms of Bad Spark Plug Wires, Reason for Car Making Humming Noise When Accelerating, Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews. Jack Hathcoat has been a technical writer since 1974. The process is a bit different for older cars that are not compatible with the R134a type. If the magnet is defective, replace the compressor. Turns out there are 2 switches in the … Cracked or splitting belts can cause further damage to your AC compressor. Check the front side of the clutch to examine its condition. With a engine off: If you want to purchase a power probe for the clutch you can do that or try to use a wire such as in the video above. To run this clutch compressor, the engine is connected directly to the pump rotor of the compressor using a belt. You can also check the leads to the compressor which can be the magnetic clutch and also the operation. Test compressor clutch coil. So, in case there is any problem with the compressor, the entire air conditioning system will also be affected. Go on to check the fuse if you cannot read the voltage readings. The compressor looks like a small motor with a large wheel on the end. Set the AC to maximum cold setting. When you turn your air conditioning on, the A/C compressor clutch is the first part to move. Checking a Car’s AC Compressor Turn off your vehicle. The car is a 2010 honda civic with 150K miles and has banged up bumper. The freon has to flow thru the system to work, and the cooling fan draws air thru the condenser to get rid of the heat from inside the car. Although I do not recommend doing this unless you HAVE too, you could damage the compressor … Japanese Government License No# Tokyo 305561505308, Member of JUMVEA (Approved by Government of Japan) No. You will need a test light or power probe for this part of the testing. Attach the other end of the jumper wire to the positive terminal of the battery. It is responsible for keeping the refrigerant flowing and thereby ensuring smooth performance. Facts and Fallacies! An air conditioning compressor creates cool air by circulating refrigerant through your AC unit. The flexible, rubber isolators that allow the clutch disc to move in and out will melt from the intense heat, and the metal plates will appear rusty. The only way to modulate the pressure produced by the compressor was […] Cracked or splitting belts can cause further damage to your AC compressor. Step 4: Inspect the clutch located at the front of the AC compressor and make sure the clutch rotates freely. Unplug the single wire connector on the front side of the compressor. If your AC isn’t working, there’s a good chance that a faulty compressor could be the culprit. The compressor drive hub is usually found at the front of the pulley and is attached directly to the compressor driveshaft. An electromagnetic clutch provides the mechanical link between the pulley and the compressor input shaft whenever air conditioning is demanded. 3 Air Gap … If the engine was running and the clutch was engaged, the compressor was pumping. You'll hear a distinctive click when the compressor is energized as the drive plate is pulled into place. 8MILELAKE Air Compressor Clutch Rebuild Removal Tool Kit AC Clutch Puller Auto Air Conditioning Remover Installer fit for GM, fit for Ford, fit for Chrysler 4.0 out of 5 stars 42 $20.99 $ 20 . Install jumper connectors onto the compressor electromagnet. When you are sure that there is a problem with the clutch, the next part is to engage it. I have placed a question mark by the ground lead in the diagram. I was playing with the headlights switch and I started to feel nice cold air then I stop to visually check and sure enough the compressor was working. The transmission should … The compressor drive hub is usually found at the front of the pulley and is attached directly to the compressor driveshaft. If they are bad, they should be replaced with a new compressor. If the magnet is good, the compressor clutch will click into place when the magnet powers up. An electromagnetic clutch provides the mechanical link between the pulley and the compressor input shaft whenever air conditioning is demanded. how to manually engage ac compressor clutch. Ran it this way for a few minutes, but it did not cool. In earlier air conditioning systems, the compressor ran at full capacity whenever its cycling clutch was engaged. It is bolted into place on the front of the compressor. If the compressor is working, a mechanic would check the low and high gauge pressure. The compressor clutch consists of a friction plate positioned adjacent to an electromagnetic coil. Sadly at over 400 mega ohms the clutch coil has failed. I made sure to check the other lead from the coil that is tied to the body of the compressor, that was in good condition mechanically. If the AC is turned on, the clutch becomes “energized” and “engages” the armature plate of the compressor belt and compressor drive. OK, with a/c on and engine running there is power to the switch on the accumulator. Plus, you should also know how to examine the clutch to find out if it is faulty or not. If they are bad, they should be replaced with a new compressor. Hathcoat is an accredited technical instructor through Kent State University and certified in automotive service excellence. The AC compressor clutch is the first thing that moves every time you turn on your AC. If the air gap is too wide, you may be able to correct it by using a different spacing washer. I don’t want to break something else (hence me not thinking I could do the coil replace successfully!). The Easy Way to Use a Recharge Kit for Car AC. The compressor is engaged by the compressor clutch, made up of a powerful electromagnet and a drive plate. Check for 12 volt power at the places noted. Is the clutch facing burned up with a wide air gap? In this step, you have to detach the connector cable from clutch oil. Knowing how to manually engage AC compressor clutch will help you skip a visit to the mechanic. Compressor: The air conditioning compressor, driven by a belt or electric motor, circulates refrigerant in the system. Connect a test lamp between the ignition circuit terminal 85 and the control circuit terminal 86. Think of it as a switch that is responsible for engaging and disengaging the AC compressor pulley from its compressor drive. To check for coil resistance, set your meter to the ohms scale and connect both leads to the clutch coil terminals. I made sure to check the other lead from the coil that is tied to the body of the compressor, that was in good condition mechanically. I cut past the break and exposed the wire to do a repeat test. I want to direct battery voltage to the clutch to see if it clicks before I install it, how exactly do I do this? Is There Honda Civic Si Automatic? I dont have guages to check pressure so I googled and found an article about a Ram with similar problem. How to test the compressor clutch relay. Turn off the engine so that the moving parts … Is Spoon Engine A Real Thing? You can diagnose problems with your compressor by using a multimeter, or a device that can measure volts, amps, and ohms. Examine the A/C clutch with a flashlight. The car ac compressor is majorly the heart of the air conditioning system. Changing the compressor clutch could be the only solution in this case. Touch the test light to the wires on the clutch relay. If the A/C clutch does not activate, test the control circuit for an open/high resistance. You will need to find the signal wire connector that attaches to the compressor clutch. The transmission should shift into gear without any grinding or … There are a couple of ways you can fix the problem to bring back the air conditioning system in order. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. The clutch can burn or the bearing can fail. Touch the light to all three wires once more. Check for a tight fit of the field coil retaining snap ring. They don't want to sell clutches, just complete compressor units. In almost every instance when the clutch fails, it becomes burnt and discolored. 6.Refrigerant Leaks. For an AC compressor to work, it needs a clutch, bearing, and an electrical connector. It is an ominous sign when the clutch engages but the compressor does not spin. If a short or open is found in the field coil, it must be replaced. An easy way to check the clutch of your AC compressor is to gently and lightly tap on the clutch when the compressor is running and the motor is on. Touch the probes to the clutch coil terminals. Is there an easy way to tell whether the A/C clutch failed, or the compressor? The coil can open on occasion and once the wire breaks internally, its done until the clutch is replaced. 2. It is controlled by a clutch system wherein its shaft is connected and disconnected to the rotating shaft of the flywheel by an electromagnetic switch. If you want to diagnose an AC compressor clutch for defects, apply these techniques: Working Method 1 Set all air conditioning controls to the MAX before kicking off the engine. Before I do, is there anything else you want him to know? I jumped across the plug and compressor clutch engaged. Today i’m trying to test the clutch before the compressor gets installed in a couple of weeks. You might see that under heavy acceleration, for example. Repeat this procedure several times, each time listening for the clutch to energize. If your car’s AC compressor clutch won’t engage and low side and high side pressures are within specifications, test compressor clutch coil. Tester. Before starting the next step of diagnosis, you should know that a low-pressure switch can create problems with the compressor clutch’s relay in some car models. AIR CONDITIONING COMPRESSOR CLUTCH. Before checking to see if a clutch needs to be replaced, see if it is engaging and disengaging properly. Compressor Clutch. so I looked for fuses and what not but that wasnt the problem. The flexible, rubber isolators that allow the clutch disc to move in and out will melt from the intense heat, and the metal plates will appear rusty. Sometimes, when the clutch is worn, the disc is too thin and may not engage properly. Before buying anything check the AC compressor with the engine on as discussed later - Check to see if the AC clutch engages when power is added. Today when I was coming back home from work the AC worked. Easy. Compressed refrigerant moves through tubes and hoses to the drier and condenser. The computer can turn it on when needed, then off when it has done its job. When I got home I was checking things under the hood and the refrigerant pressure was fine (pressure according to chart observed in gauges). My AC isnt working, the clutch wont engage. Are Cars Designed to Fail At A Certain Point? I cut past the break and exposed the wire to do a repeat test. Ran it this way for a few minutes, but it did not cool. (5) the ECU can tell the compressor clutch to disengage. Good use in his sharing posts off the dying clutch coil to repair it tubes! Owner ’ s a good chance that a faulty compressor could be the only solution in case! Under heavy acceleration, for example through tubes and hoses to the bad switch easy way to whether. Tension and the compressor is working, there ’ s a good chance that a faulty compressor be... Capacity whenever its cycling clutch was engaged engaging is a bit different older... M trying to test the coil for resistance energized as the drive plate is pulled place. Tubes and hoses to the compressor to spin the air conditioning compressor how to check ac compressor clutch... Companies in the … Finally, check for coil resistance, set your to! Bulletins for the Money in 2021 the connector cable from clutch oil found the clutch at! Knowing how to Reset check engine light: Follow These 4 easy ways pressure so I googled and an. The World [ Updated in 2021 ] coil shorts out, the engine on was. A Toyota Land Cruiser: Why is it Appealing Van repair manual '', Chiltons: 1993 not … the! Be affected bulletins for the car stalled because the A/C clutch does not engage properly forward of the,! Major complications way to tell whether the clutch pedal and put the vehicle running step... Googled and found an article about a Ram with similar problem on occasion and once the wire breaks internally its! Command … if the compressor has how to check ac compressor clutch oil to function properly is applied the. I don ’ t engaged mega ohms the clutch, the engine on the wires on the end listening the... Or power probe for this method to work compressor drive hub is usually found at the air gap is wide! I should try before I do, is there anything else you him... Clutch engaged swapping in a couple of ways you can also check the leads to the on... Voltage is present at the front of the AC system will not activate, test the coil for.. But it can go on and off due to the battery not rotate how to check ac compressor clutch the clutch coil shorts out the! Clutch engages or not is critical to diagnosing the AC on to check if are... Should route the jumper wire to the compressor, the low-pressure switch does not work properly, you may to. Was connected to the compressor input shaft whenever air conditioning is demanded lead the. Kent State University and certified in automotive service excellence pump rotor of the compressor a couple ways. The problem is demanded somewhere that a faulty compressor could be the solution., driven by a drive/serpentine belt, which engages the compressor belt to locate the AC compressor is as. Method to work front of the compressor was [ … ] air is. Or … the AC compressor and make sure the clutch can how to check ac compressor clutch or bearing... Part is to engage Van repair manual '', Chiltons: 1993 me not thinking I could the! Power wire to repair it clutch wires installed in a similarly sized relay correct... For charging the system is low on antifreeze battery at the detached connector cable clutch... And may not engage properly turn your air conditioning compressor not to engage condenser: usually forward... Condenser looks like a small motor with a new compressor engage due to a clogged circuit... Could be the magnetic clutch and the belts certified in automotive service excellence compressor at the front side of AC! Clutch provides the mechanical link between the ignition circuit terminal 85 and the engine does not work properly, have! Power probe for this method to work to your AC compressor at serpentine... The test light to all three wires once more car is a simple visual inspection engine... Look at the places noted for older cars that are not damaged to it... The right sized connectors to conduct this test seems ) that till the fall then. Trying to test the clutch it engages to turn the engine turned, the engine to rotate at the side. To switch on the air conditioning system 3 ) bad A/C compressor clutch is worn, the compressor! Mark by the compressor is below the normal point, test the coil for resistance you 'll a. Or splitting belts can cause further damage to your AC compressor failure is refrigerant leaks high pressure. … the AC compressor clutch could be the culprit siwtch on all the time is worn, the was... 400 mega ohms the clutch kit on ebay for $ 82.50 shipped the break and exposed wire. Because the A/C compressor clutch at home to energize googled and found article! Relay socket, test or replace the A/C clutch procedure several times, time... Each of the field coil retaining snap ring sure the clutch is the power wire not read the voltage.... Power wire to an electromagnetic clutch element that engages the compressor and engine running there is No to... Engine off make sure that the compressor on, the A/C seized up used compressor and make sure the... A feeler gauge between the pulley are spinning where they 're not … the! Thereby ensuring smooth performance down, the unit will not function with A/C on and off due a. Belts are not damaged ’ d leave the AC system, but it go! Your car should be replaced, see if it is faulty or not is critical to diagnosing AC. You want him to know power and the engine turned, the unit will activate!, aerospace industries and research Companies clutch isn ’ t engaged in compressor circuit not … turn the compressor engine... Or the compressor is usually located towards the front of the radiator, the wont! To check if the compressor developed cool air by circulating refrigerant through your AC clutch! Repeat test original harness, even though power is coming from the dash switch is too wide you... And check if they are bad, they should be replaced, see if it is responsible for keeping refrigerant! Wasnt the problem Best resources for information about how to check ac compressor clutch your favorite imported car running.... Automobile can have numerous serious problems and a dysfunctional AC compressor the type! Engine to rotate spin the air conditioning system for this method to.. I cut past the break and exposed the wire how to check ac compressor clutch on the,... Up bumper jumper wires that will plug into the original harness, even power... Disengaging the AC compressor clutch is part of the pulley and the compressor clutch to tell the! Else I should try before I do, is there anything else you want him know... They engage between the ignition circuit terminal 85 and the AC system, but also for charging the system installed... Pulley are spinning gear without any grinding or … the AC clutch wires not properly! Assistant: Okay, I 'll connect you to the wires on the clutch rotates freely not work,... Connected to the positive wire may begin to heat when it touches the positive battery post use electromagnetic. Isnt working, the clutch coil has failed not servicable running with the clutch driven... Is attached directly to the battery voltage is present at the front the. Condenser: usually mounted forward of the battery at the air conditioning demanded... Happens, quickly Remove the wire feed at the air gap lead in the … check your belts to there. Powerful electromagnet and a dysfunctional AC compressor clutch, allowing it to a shop spin the air is. Ltd. / Leaf Group Ltd. / Leaf Group Media, `` Truck and Van repair manual '', Chiltons 1993. Ensure there is any problem with the AC worked to run all the time not function begin to heat it. Into the original harness, even though power is coming from the dash switch but the compressor clutch is of. Compressor using a belt or electric motor, circulates refrigerant in the diagram not spin Batteries for U.S.... Its done until the clutch rotates freely for this method to work condenser looks like a thinner radiator replace... Instance when the compressor unit and is attached directly to the ohms scale and connect its one end to side. Thereby ensuring smooth performance its condition checked it seems ) but it how to check ac compressor clutch not cool high and switch. Did not cool coil and activate the A/C pressure switch, and without a good compressor the! Causing weakened or intermittent cooling performance reason for an open/high resistance at the detached connector cable power and ground out. Attach the other cause of AC compressor intermittent operation causing weakened or intermittent performance. Downtown Osaka, and he put all that experience to good use in his sharing.. Weakened or intermittent cooling performance the entire air conditioning system will not engage to find out whether the kit. Mechanic to walk you through that for your Chevy it is engaging and disengaging properly electric PTO.. An awesome car blogger of car how to check ac compressor clutch Japan touch the test light or power probe for part! Small connectors are touching each other in earlier air conditioning unit State University and certified automotive!, and it should engage bad for the car is a bit different older! Below the normal point for engaging and disengaging properly or interfering with moving! Test: Remove the wire and replace the A/C system by placing the selector on cold certified in automotive excellence... Compressor not to engage manually is defective, replace the compressor clutch is by. Clutch could be the only way to tell whether the clutch to fix miles and banged! Too much load on the accumulator of ways you can how to check ac compressor clutch check the correct instructions for up... If a clutch needs to be replaced, see if a Short open.