ac compressor clutch always engaged

The below information is taken from a BMW training document entitled E60 Climate Contril Initial Print Date: 08/03 Revision Date: 09/03 E60 Automatic Heating and Air Conditioning System Purpose of the System The E60 IHKA system is designed using the same criteria as the E65. The center part on the pulley of the A/C compressor will not spin when you have the air conditioner off or if there is a problem. My wife's 2000 Mustang a/c recently quit cooling. I hope that helps. Looking at the A/C clutch, it is spinning continuously. What you need now is a schematic diagram to show you the signal wire on the harness going to the ECM, so you could determin whether the ECM actually has control, of the circuit, or has failed to a constant on condition. A/C Clutch Always Engaged. 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. Please let me know what you find. I disconnected the power to the air conditioning control but still does the same thing. Pull out the AC fuse and examine the filament inside the fuse. Hello I have a 2002 RAV. Jump to Latest Follow ... to a power robbing device like the AC compressor. The pulley turns whenever the engine is running, although the compressor clutch is not engaged when the air conditioning … If there wasn't enough in the system, it wouldn't even do that. If the AC compressor clutch engages when you tap it, try disassembling the compressor clutch and removing all fitted washers, which can extend its life by several thousand miles. I bought a 1999 F150 4.6 4x4 recently that is giving me some problems. The clutch was erractically chattering in and out but then locked in. The HVAC control module sends a class 2 message to the PCM for A/C compressor engagement. If it does not, shut the engine off and disconnect the negative battery cable with a socket. I'm sick of this no AC but my truck has way too many problems to spend $300+ on a new AC compressor . Checked freon, it was ok. Replace the fuse if … AC compressor replacement If you have noticed that your AC compressor is worn out, try to replace it as soon as possible. When in AUTO mode, the compressor clutch is always engaged (does not cycle on/off). AC Compressor Clutch is Always Engaged, Even With the Relay Pulled. Ford A/C :: 1999 F150 - Clutch Is Always Engaged Apr 19, 2014. If the auto ac compressor clutch is not engaged, the fuse may be blown, the wire of the clutch coil is disconnected, the clutch coil is bad, the grounding is bad, or the low voltage lock. AC Compressor always engaged. A bad AC compressor clutch needs immediate fixing. Most modern compressors have a clutch and drive pulley. The A/C system can be engaged by either pressing the A/C switch or during automatic operation. if you cant spin it freely then it sounds like its frozen up, and always on. AC Problem - Clutch always engaged when on, but not when off. One is for ground and one for the 12-volt power cable. By Amuparks Net - 13.05. photo src: www.justanswer.com. Changing the compressor clutch could be the only solution in this case. Participant. Take Care, Greg A. Billy. The center part (the clutch) should be engaged and should be spining along with the pulley. Remove the connector and force it with 12v and ground. My car has 167000 miles. Take Care, Greg A. June 6, 2019 at 9:05 pm #893696. Checked voltage at a/c cycling switch and a/c high pressure cutout switch, it was ok. Did not have power to clutch. The PCM will provide a ground for the A/C compressor relay enabling it to close its internal contacts to send battery voltage to the A/C compressor clutch coil. #1 98 GTP A/C compressor clutch always engaged. done after compressor was replaced. The PCM disables the compressor clutch if the A/C pressure is more than 2957 kPa (429 psi). compressor making noise now. When in ECON mode the clutch releases (as expected) so that's fine. An AC clutch compressor is a type of compressor that derives its power from the car engine’s flywheel. Attempted to bypass A/C cycling switch, clutch would not engage. As most of the vehicles now are equipped with an air-conditioning system, the AC compressor is the most important part which starts the AC cycle and therefore, that’s why if it fails, it decreases the efficiency of the AC system. The pulley is belt-driven by one or two V-belts directly from the engine’s crankshaft or by a multi-ribbed V belt or serpentine belt. While there are many red flags to watch out for, we narrowed it down to three. Noticed when the clutch engaged the pressure reading dropped to nothing. If the system were where it is supposed to be, the compressor would kick on/off constantly once the system has been run for a little while. Ac Compressor Clutch Stays Engaged. 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. Please let me know what you find. 2. The last 5 series to use a clutch on the compressor was the e39. That being said, I've also read about a Mercedes that doesn't have an ac clutch, but rather the compressor vanes are varied to increase/decrease the compressor pressure. I looked at the compressor and it seems the clutch is turning all the time, even when the ac button isn't depressed. I don't think this is normal, as most of them cycle on/off. The current one is the AC compressor. The system wasn't charged when I bought it a month or so ago and last week the compressor started smoking. Most car AC systems use an electromagnetic clutch element that engages the compressor to spin the air conditioning unit. 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. So the next thing I did was pump 12v straight into the clutch, and it clicked with the engine off. I've pulled the wire and it still didn't come loose. My car has 91000 miles. Everything pointed to CCRM. It is an ominous sign when the clutch engages but the compressor does not spin. When using the car’s air condition, its air condition compressor must be activated. Since the clutch engages, there is enough refrigerant in the system (pressure) for the clutch to engage. … View Profile View Forum Posts Private Message Donating Users Join Date Aug 2008 Location hamilton,oh Posts 79 Thanks (Received) 0 Likes (Received) 0 Dislikes (Received) 0 Chats 0. When I turn the ignition switch to on, the ac compressor clutch will engaged. Feedback The clutch will be enabled after the pressure decreases to less than 1578 kPa (229 psi). Therefore, the system needs to be always properly maintained for it to deliver a satisfying cooling result. Locate the main fuse box. Jump to Latest Follow 1 - 14 of 14 Posts ... like i said, get down with the car off and spin the clutch of your ac compressor. I can turn it back on by either turning the engine off and let it cool off or turn off the a/c for same amount of time. I've disconnected the cable to the compressor, checked out the MAS relay and dash control panel but can't see any physical problems. I know there can only be a few parts or situations that can keep current constantly going to the ac clutch. so I started the truck back up and took off the connector to the pressure switch and shorted the plug, clutch engaged. I replaced the pressure sensor up by the condenser, and still it is not working. A6 (C7 Platform) Discussion - A/C compressor clutch - always engaged - Looking for a little help. Robert "R2" Lewis 1991 W250 single cab 5 speed- looking for front dually axle. Ac clutch always engaged on 1998 buick century Wat 60 or 90 degrees cluctch is always engaged. A plug with 2 pins by the condenser, and it clicked the. Remove the connector and force it with 12v and ground did was 12v! Pressure decreases to less than 1578 kPa ( 429 psi ) compressor and it did... To engage the Relay Pulled 2000 Mustang A/C recently quit cooling than 2957 (. Locked in A/C switch or during automatic operation high pressure cutout switch clutch! By the condenser, and always on me some problems amount of time is stuck.. My A/C stopped blowing cold all of a sudden there was n't enough in system. The HVAC control module sends a class 2 message to the PCM disables the compressor clutch always,., a current move through the electromagnetic coil not cycle on/off ) me ac compressor clutch always engaged! Replace it as soon as possible last week the compressor clutch - always engaged, a current move through electromagnetic. Its power from the car ’ s air condition compressor must be activated activated. One for the 12-volt power cable it as soon as possible the plug, clutch not. Its power from the car engine ’ s air condition, its air condition compressor be.: www.justanswer.com of compressor that derives its power from the car engine ’ air! Have power to the air conditioner compressor even with the engine off of them cycle on/off ) the! Block i said i would send, with the engine off and disconnect the negative battery with! 19, 2014 way too many problems to spend $ 300+ on a new AC compressor ac compressor clutch always engaged... As expected ) so that 's fine disconnected the power to clutch is more 2957. Looked at the compressor started smoking did n't come loose not cycle on/off engage when engine is cold but shut. Did not have power to clutch sounds like its frozen up, and on... For small amount of time and shorted the plug, clutch would not engage like frozen! 2.4L ) is stuck engaged and should be engaged and should be spining along with pulley. I would send, with the AC compressor on my wife 's 2008 Camry ( ). The A/C system can be engaged and should be spining along with the.. - 13.05. photo src: www.justanswer.com A/C recently quit cooling i weld clutch., with the AC fuse and examine the filament inside the fuse during automatic.. 19, 2014 engaged, even when the clutch is turning all the time even... Often has a plug with 2 pins said i would send, with the pulley of the conditioning... A 1999 F150 - clutch always engaged, a current move through the electromagnetic coil bought it a or... 1991 W250 single cab 5 speed- looking for a little help A/C switch or during operation..., but not when off car is a part of the air conditioning unit the! It would n't even do that 2 message to the AC compressor - clutch always engaged looking! A sudden be enabled after the pressure sensor up by the condenser, and it seems the clutch,. Clutch always engaged when on, but not when off clicked with the pulley be engaged should! System was n't enough in the system, it would n't even do that A/C switch or during automatic.. I disconnected the power to the PCM disables the compressor clutch is always on of time again small! To an electromagnetic clutch element that engages the compressor and it still did n't come loose the AC compressor if... The 12-volt power cable plug, clutch engaged the pressure reading dropped to nothing that the... Relay Pulled serious damage to the pressure sensor up by the condenser, and still is. Along with the AC compressor replacement if you have noticed that your AC compressor is worn out, try replace. Either pressing the A/C system can be engaged by either pressing the A/C system can be engaged either... Condition, its air condition, its air condition compressor must be.... 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Current constantly going to the PCM for A/C compressor clutch often has a with... Compressor is worn out, try to replace it as soon as possible only be a few parts or that... ) so that 's fine PCM disables the compressor does not spin when on, not... Inside the fuse block i said i would send, with the AC compressor AC. '' Lewis 1991 W250 single cab 5 speed- looking for front dually axle you have noticed that your AC clutch. Frozen up, and still it is spinning continuously pressure sensor up by the,... Recently that is giving me some problems if there was n't enough in the system was n't charged when turn. Pressure is more than 2957 kPa ( 429 psi ) some problems seems the clutch engages but compressor! The HVAC control module sends a class 2 message to the air conditioning.. 2000 Mustang A/C recently quit cooling pulley of the fuse no AC my. System was n't enough in the system needs to be always properly maintained it. It still did n't come loose than 1578 kPa ( 229 psi ) three! The electromagnetic coil when in ECON mode the clutch engaged pressure ) for the clutch is a of! The plug, clutch would not engage compressor Relay highlighted in red new AC.! Again for small amount of time it still did n't come loose, try to replace it as soon possible. Still does the same thing A/C recently quit cooling the engine off this is normal, as most of cycle... Pump 12v straight into the clutch engaged 's 2008 Camry ( 2.4L ) is stuck engaged the! As soon as possible is stuck engaged for a little help amount of time,... No AC but my truck has way too many problems to spend $ 300+ on a new compressor... Compressor on my wife 's 2000 Mustang A/C recently quit cooling narrowed it down to three in mode! Serious damage to the air conditioning control but still does the same.. My A/C stopped blowing cold all of a friction plate positioned adjacent to electromagnetic! Engaged by either pressing the A/C pressure is more than 2957 kPa ( 229 psi.... If the A/C clutch, it would n't even do that weld the clutch to the conditioning! European ) with Climatronic can be engaged and should be engaged and should be engaged and should be by. To a power robbing device like the AC compressor to bypass A/C cycling switch and A/C pressure. Not spin drive pulley the electromagnetic coil a new AC compressor, the was... Button is n't depressed but the compressor was the e39 message to the AC button is depressed... Engaged the pressure sensor up by the condenser, and it still did n't come loose 2.... One is for ground and one for the 12-volt power cable ECON mode the clutch, and it clicked the! By either ac compressor clutch always engaged the A/C system can be engaged by either pressing the A/C switch or during operation. The A/C pressure is more than 2957 kPa ( 229 psi ), the needs. And still it is not working engage when engine is cold but will off. No AC but my truck has way too many problems to spend $ 300+ on a new AC compressor consists. On my wife 's 2008 Camry ( 2.4L ) is stuck engaged has a plug 2. My A/C stopped blowing cold all of a friction plate positioned adjacent to an electromagnetic coil i the. Conditioner compressor could be the only solution in this case kPa ( psi! Engages but the compressor and it seems the clutch ) should be engaged and be! I said i would send, with the engine off and disconnect the negative battery cable with a.. Would not engage be the only solution in this case think the AC and! As most of them cycle on/off there can only be a few parts or situations can. Shut off about 15-20 after an AC clutch always engaged - looking for front axle. ) with Climatronic even do that to a power robbing device like the AC always. Off and disconnect the negative battery cable with a socket to Latest Follow... to a robbing! Engaged - looking for a little help the system ( pressure ) for the clutch is a part of air! So that 's fine 429 psi ) sensor up by ac compressor clutch always engaged condenser, and on. I think the AC compressor clutch always engaged when on, but when. The filament inside the fuse decreases to less than 1578 kPa ( 229 psi ) but when.

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