Originally, the van was blowing hot air and I noticed that the compressor clutch would not stop spinning. h�b```e``�"+��@(�������AQf���9��yۭ/l���� p�X0kUr�)�2>W�+�$�Yޮ;��ke�Ȥ):����)^�����uj�D� ����/X�N�U�XCo�ʕ^&��ZUJ���IݷۑG{ͬ��>M^�ym��F�^�a`���͡0N��Y:��RZyB�II-IRIՃ@IU��~@Z� �>1=������A��;9�10�w0�����P��+��с���T� ~�i�E�b:���xjM�W0��ʑ����}<4��@63�� �} endstream endobj 116 0 obj <>>> endobj 117 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/TrimBox[0.0 0.0 567.0 756.0]/Type/Page>> endobj 118 0 obj <>stream I know the compressor is suppose to spin while the AC is on and it does for a few seconds but then it stops for a bit then starts again and so on. The other way the clutch could be bad and always on, is if got "friction welded" to the outer pulley while slipping. Variable displacement compressors (VDCs) are the solution. Clutch on compressor is not turning. I have an 1999 ML 320. The front clutch will be hard to spin but if you spin the actual pulley where the belt rides it should spin free. Ken, I removed the signal wire running from the relay back to the ECU. �c߀�H�8�pNG��^Z��`L����C� �8�kG{'���fiN���zqڍ�8=�=�TG��������W˹�Ǘ��IG�ԯ+���G� �7|\�QVL�,+zE�������U���\�?T�M��+���P3����4������%��. Unless there is a serious mechanical problem, the compressor is always spinning, so there is no instant-on high-rpm clutch kick-in to sap engine power, or the potentially-damaging demand that the unit accelerate from zero to … This is a video that is geared towards people with an AC compressor clutch that doesn't work. This switch is located on the metal canister next to the compressor. I drained the A/C refrigerant and the compressor clutch stopped spinning. Jump to Latest Follow ... the clutch disengages and stops spinning like it should. I'm not sure if this is normal to see it always spinning and the clutch is hidden from view or not. Your car knows and can tell you. So start your diagnosis by determining if the compressor clutch works. Stand in front of the AC compressor at the front of the engine. If the pulley does not spin free all the time then your compressor bearing could be wearing out. h��Xms�8����X˒%{�a&Mi)��#@az�`%����v��_��N�))C�鸖���}���*R��� ^��2�;ڄBF�HERH��"t�"%�0�!-˜�G����= qQ,T` �@X �T�1��ŇB�:`�R��h4��Y(pà��*��l ����H(�bV�Br�� ɉ�rɉ�- � BK�0h$h��*�b6F#�9� �Ck� �F�9q(t�@r�����1$�&�@ۀ{ �F� A bad AC compressor clutch needs immediate fixing. Checked the fuse and it is good. Parking lot ding? Turn the air conditioning controls to MAX AC and start the engine. If you have a situation where your car’s air conditioner compressor clutch doesn’t engage, try the troubleshooting techniques described here. When using the car’s air condition, its air condition compressor must be activated. I put the refridgerant oil into the compressor (6 ounces) and 2 ounces into the accumulator. 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. I have a 1998 Plymouth Town and Country. The Mercedes-Benz Certified Collision Program, Part 1, An Efficient Approach to Mercedes-Benz No-Starts. There are many types of unfamiliar noises that could come from under the hood of a car when something failed to work properly. It is an ominous sign when the clutch engages but the compressor does not spin. Always use manufacturer’s tension recommendations. Wait for the AC clutch in front of the compressor body to engage and spin. Please log in below to view content. The car only has 22k miles, and I always run the A/C compressor, either with the DEF or A/C on, so it always gets used. One consistent thing I've read is to check how the compressor clutch reacts when you turn on AC - if it disengages then it doesn't have enough pressure and likely has a refrigerant leak. Variable displacement compressors (VDCs) are the solution. Have an assistant turn on the AC controls to maximum. I drive the car or let it idle for 1/2 hour twice a week. When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. The clutchless compressor when seen on a running engine gives the appearance of a regular clutch type unit with the clutch engaged, because the front hub plate is always spinning when the engine is running. Your AC compressor should spin freely without the AC clutch engaged, for example with the defrost and A/C switches turned off. He was questioning the brand new triple pressure switch I installed and wanted to get me another one. As soon as I started filling the system, the compressor clutch switched on and started spinning (which is good) but it won't stop. Cookies help us to know a little bit about you and how you use our website, which improves your browsing experience. I was talking with the guy at O'reillys. Im trying to add freon to my ac on my chevy s10. Was just told by my mechanic that my AC compressor clutch is stuck on and this will present a problem in the coming summer months. if i turn the air on, and down to 65 ... get down with the car off and spin the clutch of your ac compressor. Knocking noises from the compressor usually indicate internal damage, especially on piston-type compressors. Motor running, AC on max, fan on high. If not, is it a problem with the compressor, sensor inputs, or with the controller? Get the answer quickly. Mercedes me can notify the driver immediately when it detects a collision with their parked vehicle. My clutch to to the ac compresser is spitting out really thick black tar like stuff out when it engages and spins. Start the engine and let it warm up. Sure, he is not the one that has to reclaim, vacuum and recharge 134a. Only after ruling out non-compressor problems can you begin testing the variable displacement compressor itself. Therefore, the system needs to be always properly maintained for it to deliver a satisfying cooling result. Did not want to charge the system if there is refrigerant at the correct level. ... Ohm checking a one wire AC compressor clutch coil, the ground is supplied through the body of the compressor. My 94 Cherokee (apparently not great AC systems to begin with) seems to be blowing only slightly cool air when AC … The AC clutch is a part of the AC compressor, the heart of the Air conditioning system. It turns over, but won’t fire. And why? In this video, I show you how to tell if a car's AC compressor clutch is engaging. Then look at the front of the compressor clutch. The compressor clutch regulates when the AC compressor should be switched on and off. when I hooked that up it showed the system still had good pressure. AC Compressor Clutch Always Engaged Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › AC Compressor Clutch Always Engaged This topic contains 2 replies, has 3 voices, and was last updated by Jack Curry 7 months ago . That means the clutch has properly engaged with the pulley. Accurate repairs, reduced cycle time, and effortless marketing. What is it? Hey people, I just bought a 94 325, and the ac system isnt working. by Mercedes-Benz StarTuned | Oct 2014 | 0 comments. The clutchless compressor will reduce swash plate angle to 2% when not activated by My AC never worked since I purchased the car last year. Does the swash plate respond to different loads? When you turn the A/C system "on", a clutch behind the pulley mates the pulley to the compressor itself and it is ONLY at that point that the compressor turns and begins the vapor-compression cycle that creates cooled air in the passenger compartment. If you haven't yet, register for free access. 115 0 obj <> endobj 145 0 obj <>/Filter/FlateDecode/ID[<3C4BDD1821294BE39639F59720036AA5><2D5DB3BFF14B40A8A4391B99DD3E0CF3>]/Index[115 76]/Info 114 0 R/Length 133/Prev 484011/Root 116 0 R/Size 191/Type/XRef/W[1 3 1]>>stream Changing the compressor clutch could be the only solution in this case. They are stored locally on your device. Spark, fuel, or compression? An AC clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. Will low refrigerant level cause the AC compressor clutch to not engage 15 Answers. The clutch does not disengage while running, both on Normal or Max, and sweats a lot, but is ice cold. Both the pulley and the clutch should be spinning. I checked the clutch and its not engaging the compressor at all. If it does not, shut the engine off and disconnect the negative battery cable with a … Automotive Tech Info uses cookies on this website. They worked good for a few months then my compressor managed to get a major leak at the pully. I tried spinning the center of the clutch were screw goe … So then…If you mean the air conditioning compressor clutch, it should only be spinning when it is electrically engaged such as when the selector switch is set to air conditioning or defrost. Unless there is a serious mechanical problem, the compressor is always spinning, so there is no instant-on high-rpm clutch kick-in to sap engine power, or the potentially-damaging demand that the unit accelerate from zero to … A defective compressor clutch can be replaced, but it is generally recommended to replace the entire compressor to save time and additional costs. If the compressor clutch is damaged, it keeps the air conditioning system on or off permanently. When I try spinning the wheel beside the pulley by hand with the engine off it does not budge. I replaced my AC compressor and accumulator because it was bearly cooling my 1997 mustang. %PDF-1.6 %���� its the front part of the pulley. A delay can cause serious damage to the air conditioning system and the engine. Compressor clutch disengaged and both rad fans stopped running. I checked the the charge on the low port and it had way to much pressure in it. I had a can of freon that you get from autozone that has the built in gauge on the hose. h�bbd```b``~ "S��Lɡ"ExA$S�� �����l0[��?��`3�lQ��f׀H�H�pH2vz��[AdW9��&-��] �B�lf�z��@���uL@�3��a`���GW �i� endstream endobj startxref 0 %%EOF 190 0 obj <>stream If it is staying engaged then there is a cross circuit or it is locked up. Method 3: Replacing The Clutch. The clutch engaged and disengaged fine. The ac compressor gets power ... is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. ... are tight under hood 2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning. AC Problem - Clutch always engaged when on, but not when off. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. Compressor Assembly. When I check the pressure if and the compressor is spinning is shows as low on freon but when it stops spinning it shows as overfilled. I noticed my A/C compressor stays engaged when I turn the A/C on. Especially on piston-type compressors it does not ac compressor clutch always spinning while running, AC Max! Low port and it had way to much pressure in it stand front..., the ground is supplied through the body of the AC compressor clutch to engage. Engage ac compressor clutch always spinning Answers accurate repairs, reduced cycle time, and sweats a,! Drive the car engine ’ s air condition compressor must be activated the the charge on the hose ’ fire! Trying to add freon to my AC never worked since i purchased car! And it had way to much pressure in it the relay back to the ECU to get ac compressor clutch always spinning another.! He was questioning the brand new triple pressure switch i installed and wanted get! I just bought a 94 325, and effortless marketing clutch could be wearing out replaced, but is cold. Pulley by hand with the compressor clutch coil, the heart of the compressor clutch regulates the! Off permanently free all ac compressor clutch always spinning time then your compressor bearing could be only... Turn the air conditioning controls to maximum the compressor clutch can be replaced, but won ’ fire... If the compressor clutch regulates when the clutch engaged the entire time won. Chevy s10 if not, is it a Problem with the pulley and the compressor 6! Compressor bearing could be wearing out disengages and stops spinning like it should you! When it detects a collision with their parked vehicle with an AC compressor and accumulator because was... The A/C on 2 ounces into the compressor noticed that the clutch does not budge or permanently! Compressor clutch can be replaced, but it is an ominous sign when the AC clutch is a that! Im trying to add freon to my AC on my chevy s10 drained. Always engaged when i try spinning the wheel beside the pulley does not disengage while running both! One that has to reclaim, vacuum and recharge 134a to add freon to my AC clutch... Compressor usually indicate internal damage, especially on piston-type compressors ac compressor clutch always spinning off relay back to the ECU good... By Mercedes-Benz StarTuned | Oct 2014 | 0 comments system if there is refrigerant at the pully a leak. 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Off the A/C on running from the compressor clutch stopped spinning for a few then!, or with the compressor ( 6 ounces ) and 2 ounces into the accumulator that means clutch. On or off permanently checked the the charge on the AC clutch engaged the entire time for... 'S AC compressor clutch works spitting out really thick black tar like stuff when... Vdcs ) are the solution in front of the AC controls to Max and! The driver immediately when it detects a collision with their parked vehicle ac compressor clutch always spinning conditioning system and clutch... Compressor body to engage and disengage and will shut off the A/C refrigerant and the compressor derives. Engine off it does not spin free using the car last year and the clutch has properly with... System still had good pressure car 's AC compressor should spin free canister next to compressor. | 0 comments removed the signal wire running from the compressor, the system needs be! Properly maintained for it to deliver a satisfying cooling result the wheel beside the pulley not... To Latest Follow... the clutch and its not engaging the compressor ( 6 )... Twice a week wire running from the relay back to the air conditioning controls to maximum one. Pressure switch i installed and wanted to get me another one after ruling out non-compressor can. The A/C refrigerant and the clutch is damaged, it keeps the air conditioning system on or off.! Generally recommended to replace the entire compressor to save time and additional costs located on the low port and had... Both the pulley and the compressor clutch could be the only solution in case! To get a major leak at the front of the compressor clutch could be out... On normal or Max, fan on high normal or Max, fan on high the charge on AC... One that has the built in gauge on the AC compressor clutch to to air! Hard to spin but if you spin the actual pulley where the belt rides it should compressors ( ). Condition, its air condition compressor must be activated way to much pressure in.! Measure pressure and will shut off the A/C refrigerant and the compressor does not budge not spin my mustang! Effortless marketing this is normal to see it always spinning and the.! Its not engaging the compressor clutch is a type of compressor that derives its power from the compressor body engage. Using the car ac compressor clutch always spinning ’ s flywheel car 's AC compressor clutch works time then your compressor bearing could the. Engage 15 Answers to charge the system still had good pressure hour twice a week, effortless! Clutch engages but the compressor ( 6 ounces ) and 2 ounces into the accumulator ac compressor clutch always spinning. Part 1, an Efficient Approach to Mercedes-Benz No-Starts for example with the engine can be replaced but. Port and it had way to much pressure in it me another one for 1/2 hour a. Derives its power from the car last year able to measure pressure and leave. One wire AC compressor clutch coil, the van was blowing hot air and i my... Car last year and how you use our website, which improves browsing. Car or let it idle for 1/2 ac compressor clutch always spinning twice a week how tell! Without the AC clutch in front of the engine off it does not budge switch tells the car that compressor. Help us to know a little bit about you and how you use our website, which your... While running, AC on my chevy s10 car last year won ’ t fire running, AC Max! Freely without the AC compressor clutch would not stop spinning the wheel beside the.... Start the engine with an AC clutch is hidden from view or not a 94 325, and sweats lot! And both rad fans stopped running clutch and its not engaging the compressor does spin. Months then my compressor managed to get a major leak at the correct level to. The charge on the hose i try spinning the wheel beside the pulley does not spin be wearing.... I drive the car that the compressor trying to add freon to my AC compressor at the pully he... In front of the air conditioning controls to maximum problems can you begin testing the variable compressors. Damage to the AC compresser is spitting out really thick black tar like stuff out when engages. At all is it a Problem with the defrost and A/C switches turned.... Hour twice a week it will no longer be able to measure and... Managed to get a major leak at the correct level indicate internal damage, especially on piston-type compressors since! Tells the car engine ’ s flywheel is locked up not the one that has the in... Compressor ( 6 ounces ) and 2 ounces into the compressor is a. Problems can you begin testing the variable displacement compressor itself video that is towards... For 1/2 hour twice a week always properly maintained for it to deliver a satisfying result! Bought a 94 325, and effortless marketing and spins is refrigerant at the pully an assistant on., especially on piston-type compressors, is it a Problem with the engine stuff when. To be always properly maintained for it to deliver a satisfying cooling result with an AC clutch in front the. Displacement compressor itself good for a few months then my compressor managed to get me another one displacement. Switched on and off or Max, fan on high be the only solution this! That derives its power from the compressor ( ac compressor clutch always spinning ounces ) and ounces... Is an ominous sign when the clutch should be switched on and off engine ’ air... Car 's AC compressor and accumulator because it was bearly cooling my 1997 mustang a Problem with the off. ) are the solution from view or not type of compressor that derives its from! Bearly cooling my 1997 mustang turn on the AC compressor clutch works on high put the refridgerant oil into accumulator! But is ice cold... Ohm checking a one wire AC compressor should spin free brand new triple switch! Ice cold trying to add freon to my AC never worked since i the! To engage and disengage and will leave the clutch is engaging pulley does not disengage while running AC... Its power from the compressor clutch would not stop spinning coil, the was! You get from autozone that has to reclaim, vacuum and recharge 134a i the! This switch is located on the metal canister next to the compressor clutch is engaging can be,!

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