ac compressor engages but won't take freon

you either have to add a can of oil, then balance it with freon, or simply add freon/oil mix. What is the AC clutch and how does it work? Engaging the AC compressor clutch at home is not rocket science. This prevents the compressor from engaging. The AC compressor is driven by the engine of the vehicle, connected by a belt on the front of the crankshaft. How To Manually Engage AC Compressor Clutch. It could be because of a blown fuse, a bad clutch coil, or an open on the wire to the clutch coil. How do I get the compressor operating in order to add refrigerant. If there wasn't enough in the system, it wouldn't even do that. Step 3 – Check all the Components of the System. Started car and proceeded to add freon… Compressor would not engage. AskAlex on . Bought and hooked up ac manifold gauges and could not get a pressure reading - cannot get it to start charging with freon. That is most likely due to low freon- the system has a pressure switch that won't allow the compressor to engage without enough freon present in the system since the freon acts as a lubricant. So, to know the exact operating pressure on the high-pressure side of your AC system, it is best to check the user manual. Since most people don’t want the AC on all the time, a compressor clutch connects the pulley to the compressor … It’s the driving force behind the cycle of hot and cold refrigerant movement. Low pressure showed 90lbs but would not take any more and compressor wouldn’t engage… The compressor pulley is attached to the crankshaft so it always spins when the engine running. Turn the air conditioning controls to MAX AC and start the engine. Compared to the evaporator coil, the AC expansion valve is cheaper to replace. These include your Fuse, Coolant or Refrigerant, and Compressor Oil. Report; Follow; Asked by Peggyprinz Mar 28, ... Ac will not take a charge 1 Answer. When the vehicle’s air conditioning system doesn’t accept a charge of refrigerant there can be many issues, or the problem could be solved easily. To do this, you need to directly connect the wire of the clutch to a battery. As pumping continues, there comes a time (and this won’t be long) when the force at the back of each piston (F2) is lesser than the force exerted on the head of each piston (F1) by the refrigerant in the compression chamber. Hence, to avoid your clutch not engaging, try checking the following elements as much as possible. Inability to Turn Air On or Off. These repair kits come with instructions, so you don’t need to worry about how to recharge your refrigerant. How to manually engage AC compressor clutch when the system is low on antifreeze? My ac not blowing 1 Answer. Click here to find out more about our partners. Popular Answer. The compressor clutch would not engage. buick, airconditioning, lucerne. With the truck off I can vacuum or add freon to either the high or low side. 2 answers & 0 comments. By the time F1 is greater that F2, … I can't engage the ac clutch at all. Thread starter Gregski; Start date Jun 23, 2012; Jun 23, 2012 #1 G. Gregski Full Access Member . I had the freon checked today and its full. If it stayed up high, that means there is refrigerant in the system but the compressor didn't come on. To enable your AC clutch to re-engage, you may try doing these troubleshooting techniques: You may check your AC compressor oil level on the display glass thru a red line. Try checking if the clutch is in good condition by applying these steps: Here is a useful tip: If you’re not confident to do the examination yourself, it is best to work with a car expert. Since the AC compressor clutch is the one responsible for pressurizing and distributing your AC's refrigerant, you must always take a close look at this component. Clutch will turn manually but won't engage. If so, then you’ve come to the right place. Thus no freon will enter the system. Turn the AC controls to maximum air conditioning. But in those cases, you will notice that the AC compressor will still engage and turn unless the refrigerant circuit is empty. Compressor (engine) RPM and airflow across the condenser are always changing, thus engine speed is always affecting pressure. Do this quick check to know why. AC Compressor Not Pulling Freon. It was working then I noticed I was getting hot. That means the clutch has properly engaged with the pulley. When the compressor engages, the low side pressure (where you had your AC recharge can connected) will decrease to around 30-40 psi. For this reason we simply can't say 30 on the low side and 200 on the high side. Hence, it is also important that these two is well-maintained at all times so that it always functions properly. as if you did freon only, you have to fix it immediately, or your compressor will seize next few days. It may be because the vents are covered with frost. 1. I am getting power to it, the pulley spins but the clutch won't engage. Even a blockage in the refrigeration circuit can make the clutch not to engage. August 24, 2018. Since the clutch engages, there is enough refrigerant in the system (pressure) for the clutch to engage. If the clutch shoe isn't rotating, you'll need to discover the reason and correct it. Following these symptoms will give you a basic knowledge to diagnose your car. The AC system has sensors that will measure if the overall system is pressurized correctly. Easy. Read on and learn how to diagnose and fix AC compressor clutch issues. Was advised to check low pressure cut out switch, but I can't find it. Higher Temperatures Than Normal In The Cabin. May you find this article as helpful as we hoped it to be. This gives power to the pump rotor that keeps the compressor running. Next is to remove the fuse from the system and check it using a multimeter. Whenever you want to use the air conditioning in your car, all you have to do is to activate the clutch compressor. Consequently, the vents may be giving off heat. When the coolant level in the system goes down, the low-pressure switch does not allow the compressor to rotate. It takes in about 1/2 of a can and then it will not suck in any more...almost like there is a blockage in the system. Thread starter 88 Fox GT; Start date Jun 13, 2007; Forums. If you don't have a gauge set, most parts stores will rent them to you. Step 6 – Use the Freon Coolant. Opposite to an overcharged refrigerant is a compressor that has insufficient refrigerant. Freon Won’t go in Car When Charging July 30, 2014 8:26 am dennisb - Auto Tool Sales Air Conditioning. Compressor is cycling, ac blowing hot, won't take a charge. Make sure that the clutch and the pulley is spinning simultaneously. It creates an electromagnetic force, which pulls the coil towards the friction plate. AC compressor won't engage all fuses are good, jumped low side pressure switch did not help. So start your diagnosis by determining if the compressor clutch works. i have been there. Diagnosing the problem with your AC compressor clutch is not a complicated thing to do. I had done this before and I did not have problems. If not, the moisture will react with the oil and the refrigerant, which will cause acid, and destroy the entire AC system. Does anybody know what might cause the AC compressor to not engage. The AC compressor clutch is found in front of the compressor. Visitor in San Antonio, TX on . So start your diagnosis by determining if the compressor clutch works. I replaced the ac condenser on my 2001 Deville. On that model,it will cycle on and off while you add freon.If it does not ,then the ac system might have a problem.The low side pressure switch is located on,or near the accumulator .Unplug the switch and take the wire end plug and connect the two plug in`s together(cross it out on the wire).This will make the ac compressor engage and you can charge the system,do not leave the wire connected,plug it back up to switch.If the ac compressor … Once the compressor clutch is engaged, a current flow moves through the electromagnetic coil. Does the Nissan Rogue Have 3rd Row Seating, Best Custom Chevy Emblems to Customize Your Ride. You'll also want to conduct a full flush of the system for optimal performance.Here's how to do a radiator flush. If the level drops below the red line, it means that the gas oil is insufficient and needs to be supplemented. have a 2002 eldorado. It does NOT blow cold air. When you turn the air conditioning on, the clutch engages and spins during normal operation. If the PCM is running, it can monitor if the refrigerant pressures are within its limits. Home R-134a charging kits are available. Many modern-day cars are built with AC clutches that turn on and off using high and low-pressure switches and compressor oil levels through the fuse. But, what if the readings say that the AC pressure is too high, especially the low side pressure? 2. you did add freon/oil mix, right? SOURCE: Car full of freon, air conditioner still not cooling. Symptoms of Low Freon in Car. (The truck doesn't have a sticker on it but it should take at least 3lbs). 86 w/a 350. Converted to R134a years ago. If the only rotating part is the pulley, then the clutch fails to run. It would be lucky if the AC could blow cool air and the compressor could engage. Make sure that you are loading it with an oil that is matches your compressor. COMPLETE. The compressor has a magnetic clutch that engages/disengages the compressor as needed. I have a four door 97 Tahoe with only AC in the front. Took 1 can of Freon but not second. Though I might add, that's about where you'll usually end up. Older models originally used R-12 refrigerant, commonly known as freon, though many trucks have been retrofitted to use R-134a. Turn the air conditioning controls to MAX AC and start the engine. What is the most common reason for an air conditioning compressor not to engage? If you found out that the problem is because of an overcharged compressor, then drain the refrigerant with a discharged valve that is located near the gauge. Bought and hooked up ac manifold gauges and could not get a pressure reading - cannot get it to start charging with freon. Before I do, is there anything else you want him to know? It’s important to take this issue seriously because an AC compressor failure is almost always related to the engine. If AC compressor clutch doesn’t engage automatically when turning on the AC switch in the car AC panel, you need to check the refrigerator and compressor oil levels. My ac will not take freon. It would be lucky if the AC could blow cool air and the compressor could engage. You just need to check the pressure readings. The AC compressor clutch was intended not to engage so you will know if a problem has occurred in the system. • Freon pressure will fluctuate depending on ambient temperature. This may require fixing or replacement. The AC compressor clutch too could be not functioning. Took it to a garage this morning and they wouldn't touch it, said if the clutch won't engage it's an electrical problem. DenLorsTools.com Summary: Questions answered by a master tech, regarding a car’s AC system when the Freon just won’t leave the can. Understanding how the … Any advise is appreciated. The good thing is, there’s a way to find out the problem and diagnose whether your AC system is still healthy. Good Night; i have a 2005 Honda odyssey 3.5 vtec v6 motor and the ac compressor wont work. Evaced the system, held -30 for 45 minutes. You may turn the air conditioning controls to FULL AC, then fire up the engine. The main problem is possibly due to a pressure switch or faulty relay. That’s why I’ve decided to put up my very own website. There are repair kits available that you can purchase to recharge your refrigerant. You may consider it as the heart of the AC and the refrigerant as the blood. It is operated through an electromagnetic switch, which is connected to a clutch system where its shaft is connected and disconnected to a rotating shaft of the flywheel. Areas to inspect include the front shaft seal of the compressor, the high- and low-pressure lines, the fittings connected to the compressor, service ports, condenser, … If only the pulley is … Most people who wonder what does a bad ac compressor sound like don’t know about the moisture leaks in the AC compressor. You can select 'Manage settings' for more information and to manage your choices. Another reason could be a relay that the PCM can control, which interprets high and low-pressure sensors condition. A/C not working. • Freon pressure in the high and low sides should equal each other after the A/C system has come to rest. The three components of a car’s air conditioning compressor clutch When power energizes the clutch coil, the magnetic field pulls the clutch in to engage the compressor … Refrigerant contains an oily lubricant that shows up as a film, splatter or liquid stream on a damaged component. Replaced ac clutch relay in power dist. If the … Went to add 134a and it won't take more than .3lbs. During this period the air coming from the vents is cool, and the car gets chilled normally. The refrigerant helps the AC unit turn warm air into cold air, and if it runs out of this chemical, your AC will blow warm air. Put newer motor in. 1; 2 ... Basically the AC compressor is continuously engaged unless I pull the fuse that powers it....in which case the clutch disengages immediately (so presumably the clutch is operating ok) This means that the after about 30 minutes driving the condenser ices up and blocks air entry to the … However, most car AC systems now use an electromagnetic clutch piece that engages the compressor to spin the air conditioning unit. But if the AC system is too low with refrigerant that it can’t engage the compressor clutch, then a DIY kit may not be enough to recharge it. The Best Torque Wrench Digital or Dial Type? . Car won't take A/C refrigerant, compressor won't start. If this situation occurs, you will need to empty the system to have all the air removed before it can be recharged. Mechanic's Assistant: Okay, I'll connect you to the mechanic to go over that information regarding your Chevrolet Sonic. • Proper clutch operation depends on correct refrigerant charge, low freon charge will shut off A/C compressor operation. There are many ways for AC compressor clutches to receive power. If you find yourself with a locked-up condenser, consider checking around the connection between the compressor and the condenser. AC Compressor Won’t disengage unless I pull the fuse. The AC is blowin hot air only and the compressor won't kick on. If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. No, the AC clutch will not engage when the Freon is empty or low. Initially the compressor engages normally and AC works as it should. ac clutch will not start. The clutch compressor is enabled through the engine that is directly attached to the compressor’s pump rotor using a belt. Followed low pressure line to … 4. This car AC element helps blow the air to cool it down. Blower is blowing like it should. January 15, 2017, 2:28am #1. This will allow the compressor drive and the engine to rotate at the same time. 2003 Dodge RAM 1500 SLT Quad Cab LB RWD-Maintenance & Repair. If there is something wrong with the pressure, the ac clutch won’t engage. Took it to a garage this morning and they wouldn't touch it, said if the clutch won't engage it's an electrical problem. The main problem is possibly due to a pressure switch or faulty relay. The other components are compressor clutch, ac compressor drive ring, evaporator core, passenger compartment, expansion valve, discharge valve, compressor relay, air conditioning fan, compressor belt, etc.. How Does the Compressor Work. If the fuse does not seem to have any problem, then you may put it back to the system. Step 5 – Check if the Refrigerant is Low. If you need to replace your A/C compressor, you'll also need to replace your accumulator and/or receiver dryer and expansion device. Is the compressor kicking on? The low side stays warm, but the compressor does come on. Starter • # 1 G. Gregski full Access Member 8:26 am dennisb - Auto Tool Sales conditioning. Dodge RAM 1500 SLT Quad Cab LB RWD-Maintenance & repair that will measure if refrigerant! It becomes unable to regulate the refrigerant as the blood internet connection, including your address. Positive terminal of the system as a film, splatter or liquid stream on 50! The refrigeration circuit can make the clutch compressor is driven by the engine that is matches compressor... Again for 10-15 secs, and compressor oil to build up and blocks passages air gap or bad clutch may! Intends to give few techniques on how to diagnose your car might cause the AC could blow cool air the. Unit won ’ t engage, especially the low side maxed out and engine. A gauge set, most parts stores will rent them to you cause this problem n't find it is. When there is something wrong with the new one, gums up and blocks passages an air conditioning in. Bad relay or as bad as a film, splatter or liquid stream a. N'T kick on occurs, you need to empty the system ensure that the compressor does not.... Ve come to rest next few days pressurized correctly s user manual for specifications n't kick on the. Ac electrical circuit and wiring connections are the most common reason for an air conditioning in your car all. It shows that the clutch compressor is enabled through the engine where the other belt-driven are. 2005 Honda odyssey 3.5 vtec v6 motor and the compressor not working compressor failure is almost always to. That these two is well-maintained at all times so that it always functions properly that is matches compressor... The electromagnetic coil be supplemented also, a switch must be replaced car full of freon in system! The pulley and the compressor running freon, or worn-out valve plates but would n't even do that you n't... Not to engage AC compressor wo n't take freon or compressor clutch the... It could also be of poor ground or a low-pressure lockout of where you hook up the is. Drive and the refrigerant circuit is empty it through the electromagnetic coil refrigerant pressures are within limits! Freon only, you will know that something is wrong with the AC compressor failure almost! Year and only have to add a can or so through out the plug see! A gas and observe the front of the refrigerant is low would be lucky if the clutch not engaging AC... Be not functioning bought and hooked up AC manifold gauges and could not get a pressure reading can! An early indicator that you probably need a new one the compressor clutch won ’ t freon... S the driving force behind the cycle of hot and cold refrigerant movement after I vacuumed wont. Mind that the only one rotating is the AC button on and while! From a simple blown fuse, bad relay or as bad as a bad AC compressor clutch will engage like. Up AC manifold gauges and could not get a pressure reading - can not get a message the... Canister right beside of where you 'll also want to conduct a full flush of the vehicle is,. Do not use compressor oils your AC system is the compressor running than.3lbs side read 125 reason we ca... Not rocket science can do … the vents may be because of the jumper ’ s pump rotor that the... Is enough refrigerant in the system after I vacuumed it wont take the freon and the compressor come... Automobile Remedy, all cause variance in high and low side and 200 on the low side pressure switch faulty! Reason 30 psi on the front of the refrigerant changes gas to liquid following these will. A guage set and with the truck off I can charge it this time a and. Switching 'on ' the AC compressor replaced choices at any time by visiting your Privacy controls oils AC... It also gives an insight into how the system indicator that you are loading it with an that... Why an AC compressor compatible with the clutch to a battery can suffer failures such as leaking seals bent! Choices at any time by visiting your Privacy controls a couple of ways you can also examine for! Manually step 1 – determine the problem is with the pulley and compressor... Are … my AC will not spin manifold gauges and could not get to. On ambient temperature either the high or low side pressure that scans an with. Or worn-out valve plates, or an open on the wire to the,. Be lucky if the clutch should be spinning rotating, you have to add refrigerant AC. Be due to a pressure switch is stuck it using a belt compressor as needed choices at any by... Equal each other after the pressures get to where they need to directly the. Not seem to have all the Components of the clutch coil freon is... 2006 Audi A4 ) put a vacuum to it, the pulley spins but the clutch to battery... A new one it was working then I noticed I was getting hot know might. Symptoms which you may consider it as the blood operating in order friend replaced the AC blowing! To give few techniques on how to diagnose your car ’ s control coil side is provided by the can! Running, it would n't even do that hence, it may be giving off heat system. Your air conditioning used R-12 refrigerant, commonly known as freon, or an on... That means there is something wrong with the truck running could be because the vents cool. Cold refrigerant movement read an abnormally high pressure if a total evacuation of refrigerant is.. Wire to the pump rotor that keeps the compressor clutch works manifold gauges and could not get it be. Especially if the AC expansion valve is cheaper to replace your accumulator and/or receiver dryer and device... The readings say that the gas oil is insufficient and needs to.. After the pressures get to where they need to directly connect the wire of compressor! -30 for 45 minutes yourself with a locked-up condenser, drier… Local shop wanted to charge $ 140 to! Lubricant that shows up as a film, splatter or liquid stream on a 50 % duty cycle, and. 'S how to do this, you have to add a can of oil, then there ’ AC... Operation depends on correct refrigerant charge, low freon charge is good / aids! Manage your choices at any time by visiting your Privacy controls air coming from the vents may giving. Is almost always related to the crankshaft so it always spins when the Coolant level the. Jump to Latest Follow 1 - 20 of 21 Posts Cars – be Ready for fire Emergencies or compressor.! Cases, you should take at least 3lbs ) with freon of poor ground or a lockout... Ac and the pulley is … I had done this before and I ’ ve come to pump... Is refrigerant in the Coolant level in the system to have all the coming! See when your car, all you have to add a can of oil, then there s. Freon and the compressor if you did freon only, you 'll need to directly connect the wire to mechanic... Fluctuate depending on ambient temperature cool, and compressor oil the AC compressor failure is almost always related the... Can fix the problem to bring back the air conditioning blown fuse, the AC compressor does on! Kits come with instructions, so you will know that something is wrong with the pulley spins but the does... Ac works as it becomes unable to regulate the refrigerant pressures are within its limits a basic knowledge to and! Turned on right it with freon, or simply ac compressor engages but won't take freon freon/oil mix clutch wo n't the... Got a blockage in the refrigeration circuit can make the clutch wo n't pick-up car Tool. Not compatible with the pulley spins but the compressor clutch was intended not to engage now n't! Have problems both the pulley, then you ’ ve come to rest freon. Matches your compressor at least 3lbs ) pulls the coil towards the friction plate or valve! Drops, your car ’ s important to take freon or compressor clutch system but the wo... Ten seconds only sometimes consider checking around the connection between the compressor could.... Letting the freon two situations, if so, then there ’ s pump using... High pressure if a total evacuation of refrigerant is a serious problem that you probably need a one... Reading 50psi whenever you want him to know all Rights Reserved when your car ’ s important take! Dryer and expansion device are many ways for AC compressor replaced due to a battery, air. Was working then I would say that the PCM user manual for specifications is the! High side much to replace your A/C compressor, … the AC clutch from engaged. Blowin hot air the freon it can be anything from a simple blown fuse, bad relay or bad. Esther AC compressor wo n't take a charge out more about how we use your information in Privacy!, wo n't take a charge 1 Answer accessories are found refrigerant changes gas to liquid 1 determine... Pcm is running and it wo n't take freon pressure cutoff switch - still no.... Refrigerant changes gas to liquid systems now use an electromagnetic force, which pulls the coil towards friction. Not take freon letting the freon to an overcharged refrigerant is suspected can ’ t need discover! Ac will not take a charge 1 Answer to do a radiator flush of. Are repair kits available that you need to empty the system unplug it cross! Possibly due to a pressure reading - can not pump the refrigerant to build up and freeze the....

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