Ac Clutch Engages Then Stops

I have a 1999. From what I can see the only safety switch that would kill your engine when engaging the blades is your seat switch. you wouldn't think it so but if the gap between the outer drive plate and the pulley is too wide the coil (electromagnet) can't keep the drive plate pulled tight against the pully, especially when hot. You can check this by running the car with the A/C off and then listen for the click and the change in engine note when you switch the A/C on as the clutch is engaged. I have electrical problem: the clutch won't engage on my Jeep Cherokee Laredo 92. I have 12V going through both pressure switches. to the clutch to see if it engages. Why Does an AC Compressor Clutch Engage and Disengage? An air conditioner clutch that repeatedly engages and disengages is usually an indicator that the vehicle's system is low on refrigerant. This is a very easy repair task, and it cost $50 for. The average clutch is designed to last between 20,000 to 100,000 miles depending on your vehicle make and model. On off A/C switch in passenger compartment does not light up. All the time. The only thing you can do when you have caught it is turn the AC button on then back off. Air Conditioning problem. This shudder or vibration may vibrate throughout the entire vehicle. This 2000 Ford F350 with the 7. Subject: Re: Write-Up: AC Compressor & Clutch Replacement Sat Apr 03, 2010 11:15 am So the clutch went out on me again. When I first turn the car on I can see the A/C clutch being engaged, but after the car runs for bit, then clutch disengages. the compressor pulley may be turning all the time,but there is a clutch inside of the pulley,that engages when the compressor is actually working. Check the clutch fan. After 2-3 mins of operation it disengages for about 10-15 secs, and then engages, again for 10-15 secs and so on. Disconnect the 14-pin connector. Checked the fuse and it is good. The AC clutch coil can burn out, short out or sometimes even become too weak to engage properly. When you re-charged the air conditioner compressor you need to turn your fan motor on high , and it should be on its coldest. Or you can follow the schematic on the side of the relay and use a volt meter to test it. Step 8: Put in the new pulley, and engage the snap-ring with its beveled edge facing outwards. Checked freon and it was still charged. You can apply 12v across the clutch and then see if the compressor kicks in. The first question that is asked is whether or not the AC relay cycles. Still not getting AC, Still clutch engage/disengage behavior. If I take it out, and put plate back on with basically no shims, then the gap is below what is required. AC Unit - on and off again by: Mary Robbie, When AC unit has been off for a while and you turn it on, it runs ok for a while until trailer is cooled then when it needs to come back on is when the problem starts of on again, off again. If the shim or shims are fairly thick then they can be removed or adjusted to reduce the amount of air gap between the clutch hub and the clutch pulley. Did the "usual", replaced compressor (complete with clutch), accumulator, and orifice tube. air conditioner, and then. I have electrical problem: the clutch won't engage on my Jeep Cherokee Laredo 92. Replied by johnbkobb on topic A/C compressor not turning If you want to text or email me a land line number where I could call you and a good time to call I can call you about this. If the shim or shims are fairly thick then they can be removed or adjusted to reduce the amount of air gap between the clutch hub and the clutch pulley. i have checked all the fuses and none are blown, i switched diodes nothing, i unplugged the clutch harness at the compressor and put my meter on it and got no voltage while on max ac, checked r134a levels are good. For some reason if I rev up to 4. AAMCO recommends having the system checked and charged, as operating an air conditioning system in this condition causes further damage. The AC clutch simply does not engage anymore. If your car has a cable-operated clutch and you find that the gears are difficult to engage, the pedal action is stiff, or there is any sign that the clutch pedal is reluctant to come back up again, then the chances are that the clutch cable is damaged. Therefore, it's necessary to open the hood and have a friend turn on and off the air conditioning to physically see if the clutch is engaged. In this video, I show you how to tell if a car's AC compressor clutch is engaging. determine the clutch/brake size, and then verify the design considerations. Q: I am having problems with the PTO clutch on my John Deere 316 garden tractor. full pressure), there is an immediate and complete battery drain. This is what normally acts as a heat exchanger for the air conditioning unit. Also, when I stop at a light, the AC blows warm air. When the switch goes bad, it will no longer be able to measure pressure and will leave the clutch engaged the entire time. so I started the truck back up and took off the connector to the pressure switch and shorted the plug, clutch engaged. clutch/brake fluid absorbs water over time and that makes it not work well because as you use your clutch the fluid gets hot and the water can even boil and steam in the system. If the pressure was either too low or too high, the computer wouldn't allow the clutch to engage, there should not be any voltage at the clutch then, right? The fact that I am getting power to the clutch makes me think the pressure is good and I have refrigerant in the system, but either the compressor is seized up or the clutch quit. Motor running, AC on max, fan on high. IF the still doesnt engage it then you need to run power directly to the AC compressor and see if the compressor engages then. Then look at the front of the compressor clutch. By acar59 - Sunday, June 07, 2015 10:09 AM: Air turns the fan off, no air causes the fan to engauge: By acar59 - Sunday, June 07, 2015 10:13 AM: Also the valve is wired to a switch of some type in the AC system. 3 month warranty of course so I'm stuck buying another one. Once I start driving it will engage until the evaporator reaches the appropriate. Volvo V70 1998 non-turbo The car AC held full charge of gas, but did not engage the clutch on the compressor. Improper wiring can lead to the following common problems: Poor Signal. 12) Measure clutch gap to confirm it is within FSM specs. DO NOT try to run the air conditioner this way. 1913-S T1 (G) 5C BUFFALO NICKEL,SALE!! w117 BNWT Venice Z. Still off as I pulled in the driveway. The next stop for that electrical path according to the wiring diagram I have is the AC clutch relay/control module. I observed the compressor clutch activity. As EricG said, just jump across the contacts on your seat switch. March 9, 2011. It makes sense that I need to pull a vacuum to do it right, but I had an extra 15 minutes tonight, decided to see if I could get this ac thing going. Why Does an AC Compressor Clutch Engage and Disengage? An air conditioner clutch that repeatedly engages and disengages is usually an indicator that the vehicle's system is low on refrigerant. If it's not dripping at all then it might be that the condenser is freezing up. Compressor Clutch The air conditioning compressor has an electromagnetic clutch that can engage or disengage the compressor pulley. and is the same for the two on the compressor i tried swapping relays with the one. So, the path from the relay pin socket in the fuse block, to the clutch on the compressor are good. Clutch on compressor is not turning. with the engine warm, your fan clutch should fully engage. My AC seems to work fine for about 15-20 minutes and then just stops cooling or defogging. First check to see if the clutch is turning or not. I was out all day. Then, I attempted to turn on the air conditioner on in the car last week and again – very bad squelching noise coming from the car when the AC was on. Both the pulley and the clutch should be spinning. Is the battery being charged ? Is the fuse blown for the battery charging circuit ? The clutch has a key which holds the clutch to the engine shaft. If neither have volts, then the clutch/switch/pressure is the issue. hard then it just stops blowing, the. Every time I check it, both fans are running. So start your diagnosis by determining if the compressor clutch works. My friends 1999 silverado (250,000 Miles) a-c works great most of the time (will freeze you out of there)it will just disengage the clutch and blow hot going down the road. I thought I had a bad fuse first but that day was the first very hot day around here. ac not cooling but freon full and compressor working: If that's the pressure just sitting there then the. The AC pulley is attached to an electronic clutch, which allows the pulley to spin freely when the AC unit is not in use, but, once the compressor is activated by the AC switch, the clutch engages and the pulley drives the compressor. If it's not dripping at all then it might be that the condenser is freezing up. Stop-and-go driving in heavy traffic is especially hard on a clutch because the driver is always riding the clutch pedal. If your car’s air conditioner isn’t working properly and is blowing hot air then one of these systems isn’t doing its job properly. you can try this when it is very cool. AC System Gauge Readings. Did it again today 3 times in a 24 mile trip. low refrigerant pressure will not engage the ac clutch per the bcm. I jumped both switches and pressed the "AC On" button - clutch did not engage. If it does then it needs re-shimmed. Thing is, I don't know where that's located. This one had one very thin shim. The other possibility would be the compressors internal crank/pistons blew up (grenaded) (belt squealing/burning with the A/C clutch engaged). compressor clutch disengages The compressor clutch will re-engage after the truck sits turned off for 30 min. When you rev the motor, you should be able to hear the clutch fan 'roar' up to speed slightly behind your engine speed. Replied by barneyb on topic AC compressor noisy when engaged after freon add That kinda surprises me. Stop-and-go driving in heavy traffic is especially hard on a clutch because the driver is always riding the clutch pedal. 2000 Jeep Cherokee Classic 4. Ac clutch engages for a few seconds then disengaged. A/C starts out cold and then stops blowing cold (like vent air) But the A/C clutch does engage when it first starts up for 10-15 minutes. I've done all my research and am fairly certain the problem is the air gap maintenance on the AC compressor clutch (let me know if I'm wrong). what pretty much everyone said above me, recheck your refrigerant pressure on both the low and high side. Once it's engaged the compressor for no reason, it will stay engaged through engine stop / start cycles, and turning the climate system off. This is what normally acts as a heat exchanger for the air conditioning unit. Then it was no problem, it sucked up the 3 cans of basic no-additives carquest freon I had. With the sytem on, set at max cool, take the connecor off the pressure switch and one terminal of the wire should have battery volts. After it starts it continues this cycle for the duration of the trip. Fortunately, most air conditioning relay failures are very straightforward: The compressor clutch relay quits and the compressor stops running. Checked freon and it was still charged. This bearing applies force to the fingers of the spinning pressure plate to release the clutch. Idle Stop solenoid/ AC wiring you set it without it engaged, then when you turned the a/c on it would kick up. IF there is power to the AC clutch BK/Y wire and the clutch does not engage, THEN: The clutch field coil is open/shorted. What a pain in the ***. From your everyday bicycle to a little known down hole oil drilling application. 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. But still no clutch engaged. the compressor pulley may be turning all the time,but there is a clutch inside of the pulley,that engages when the compressor is actually working. I watched the clutch catch and then disengage. It will be working fine,driving along and then will stop cooling. If the switch is defective, it may not supply power to the PTO clutch. hey gang i have a 2006 chrysler 300 with 3. The next time it stops blowing cold air get out and look at the a/c compressor clutch to see if the compressor is still running or has shut off. checked all fuses ,marked ac,under clove compartment and engine hood. 2006 Freightliner Columbia Daycab no power to A/C Clutch will engage clutch, so no issue there. 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. If you can disconnect the compresser clutch , jumper it strait to the battery to see if it will engage the clutch. When it does this stop and see if the compressor is turning or not. Then after about 3 - 4 seconds it starts running again. My first test was the AC relay. 5k rpm the clutch re-engages and I get cold air again for 15/20 mins, then it goes off again. (i assume that means clutch=engaged, right?) It stops and starts. determine the clutch/brake size, and then verify the design considerations. The past few days the temp dropped and I haven't used the ac. ( considering that the clutch engaged when the. I think you must have a bad connection somewhere. The first question that is asked is whether or not the AC relay cycles. Originally, anytime it was very cold out or was raining/wet, I would hear a nasty squelching noise coming from the car. Mechanic's Assistant: Has the clutch been slipping? Are you having any trouble shifting? A/c clutch. When I drive off, it starts cooling. Engage then disengage. In any auto air conditioning system, there are several key parts. Then look at the front of the compressor clutch. High side gauge went to 100 psi after one can in. Fortunately, most air conditioning relay failures are very straightforward: The compressor clutch relay quits and the compressor stops running. "To actually start the car, you then need to step on the brake pedal and pull one of the clutch levers below the paddle shifters and press the start/stop button on the steering wheel. low refrigerant pressure will not engage the ac clutch per the bcm. Now it blows warm air during start up. The release system includes the clutch pedal, the clutch cable, the clutch release lever, the clutch release shaft and the clutch release bearing. The fan will engage on throttle, at idle, or when the fan rpm otherwise drops below a certain threshold. Then later tonight when it cooled down it works again. Also there seemed to be hot air coming thru the vents with nothing on. Again you have the option to set the cabin temperature. Saturn VUE AC and Heat Problems. This could be either the control module, or the clutch cycle (thermostat) switch. I watched the clutch catch and then disengage. But then when I hit the ac button the compressor engages and you hear this loud and i mean LOOOOUDDDDDD squeal/skreetch!!!. The clutch connects to your engine via the engine’s flywheel. If the clutch is turning, then you either have an airflow problem or an internal system problem. So I guess my problem is that the clutch works but it just doesn't move in close enough to engage. I just got it back from the workshop, as the AC compressor had to be replaced. I'm still sticking with clutch coil, or the less common worn clutch that the coil can't engage anymore (too large air gap). If clutch engage pressure OK, replace clutch engage pressure sensor and check tractor operation and codes. There are specific tests for each. I have had problems with this trunk since the day I bought it,I put a $3,500 Jasper Transmission in it while the truck was under warranty it was tapping and the air conditioner didn't work I brought it to CarMax where I bought it they fix the air condition and said they don't hear the tapping I'm sitting there talking to the mechanic I'm saying. However, those same symptoms can appear if you have a pitted AC clutch relay. Definitely, a bad fan can damage your vehicle's air conditioning system. 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. I finally got a chance to poke around under the hood today, and noticed that it appears as though the AC Clutch is sticking on. On off A/C switch in passenger compartment does not light up. If it still doesn't work then you may have a bad Seat Delay Module Control. the bearings went out of the compressor so i replaced it with a brand new one and replaced the r134,now it is clicking off and on non stop as rapid as it possibly can. I used that cheapie pressure guage - it connects to the fitting on the low side tube. Stand in front of the AC compressor at the front of the engine. But then when I hit the ac button the compressor engages and you hear this loud and i mean LOOOOUDDDDDD squeal/skreetch!!!. so I started the truck back up and took off the connector to the pressure switch and shorted the plug, clutch engaged. The only thing you can do when you have caught it is turn the AC button on then back off. Did the "usual", replaced compressor (complete with clutch), accumulator, and orifice tube. air conditioner, and then. The rotor portion of the clutch becomes magnetized and attracts the armature. Once it's engaged the compressor for no reason, it will stay engaged through engine stop / start cycles, and turning the climate system off. The a/c system was ice cold all summer. After a while it starts to engage for few seconds and than back off for about 10-15. When your foot is off the clutch pedal, the springs in the pressure plate push it against the clutch disc, which in turn presses against the flywheel. If I disconnect the pressure switch on dryer clutch stops. Everything has worked fine since then. 2000 chevy truck 5. 2000 chevy truck 5. Did basically the same thing except took the clutch off and sanded by hand with 400 grit little bit at a time as even as i could concentrating on the first quarter inch then polished with 1000 then used the oven to confirm the fix. to the clutch to see if it engages. Does the A/C start blowing warm air on the highway? In stop-and-go traffic? When your car A/C blows cold then warm, head to your nearest Firestone Complete Auto Care. If the a/c continues to cool when accelerating gently, but stops cooling with faster acceleration this would help to validate this explanation. What a pain in the ***. If you have a situation where your car’s air conditioner compressor clutch doesn’t engage, try the troubleshooting techniques described here. Car A/C Stops Cooling or Working After a Few Minutes see if the clutch plate is engaged when the AC problem is occurring. Still not getting AC, Still clutch engage/disengage behavior. If the clutch engages, the problem is the clutch power supply (relay, fuse, wiring, switch or control module). "To actually start the car, you then need to step on the brake pedal and pull one of the clutch levers below the paddle shifters and press the start/stop button on the steering wheel. This is what normally acts as a heat exchanger for the air conditioning unit. My mechanic still swears it's the 14 month old AC fan. but i did a test on the ac clutch relay and pulled it out of the fuse box under the hood and tried a trouble light and i have no power there?anybody have any ideas or a wiring diagram would help. If you don't know how to check this and you don't have age manifold, then have it serviced by a certified mech. Sometimes when I turn the AC it will blow out cold air and sometimes will not. 2013 toyota sequoia platinum, suv 4x4, this2013 toyota sequoiaplatinum might be just the suv 4x4 for you. In a properly working air conditioner, a fan will draw air over the evaporator coils, where it is cooled, and then be re-circulated back into the room. The 2000 Xterra's Air Conditioning is sometimes cool but may not work other times. Motor running, AC on max, fan on high. I could take a pry bar and "help" engage the clutch by pushing in on the clutch. --Alternatively, if leave the clutch in until everything stops spinning (5-10 sec), the gear will engage. When diagnosing an air conditioning issue, it's easiest to begin at the compressor: With the engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. and will then stop blowing. So your first step is to use a jumper cable to provide battery power and ground directly from the battery. My AC works fine. It only has 44740 miles. An electromagnet clutch mounted behind the pulley then engages the compressor shaft with the pulley when the air conditioning system is switched on which circulates the refrigerant through the rest of the system. I have a 1999. "To actually start the car, you then need to step on the brake pedal and pull one of the clutch levers below the paddle shifters and press the start/stop button on the steering wheel. AC Clutch/Pulley replacement, belt squealing or burned up? If the A/C compressor pulley bearing has gone south and has partially seized up, this would explain the belt squealing/burning up etc. I noticed two wires coming from the AC compressor that are not connected to anything. If I take it out, and put plate back on with basically no shims, then the gap is below what is required. My friends 1999 silverado (250,000 Miles) a-c works great most of the time (will freeze you out of there)it will just disengage the clutch and blow hot going down the road. Normally when the clutch is engaged, the compressor draws down the low pressure side. A/C compressor clutch engages cyclically - no cold air 2 Answers. 1999 F150 5. I've got a GM connector at the comp with a good diode across it. This time we get to share some good news. if it does and the clutch is still not engaging then its possible the clutch air gap is too wide, usually from some slippage/wearing. Have a Ford Triton V-10 engine in my motor home. If the clutch engages, then check the power supply to the clutch, including the system protection devices and electronic compressor controls. We should stop here and mention system protection switches. If the A/C System is turned on, power is sent to your A/C Compressor Clutch and it will then engage. It will usually come back on eventually and then do it again. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. It really is 3 amps, which is spec. Car A/C Stops Cooling or Working After a Few Minutes see if the clutch plate is engaged when the AC problem is occurring. bring movie night to your vehicle with the dvd entertainment system. Looked under the hood and noticed that the clutch on the a/c pulley was slipping and not fully engaging. The air conditioning compressor clutch did not engage and subsequently the A/C light flashes. 2nd Gen Dakota Tech - No AC, Clutch Doesn't Kick On / Engage! - Hello all, I was wondering if anyone in the 2nd Gen Dakota group (Or any other group for that matter) can assist me with diagnosing an AC issue. This bearing applies force to the fingers of the spinning pressure plate to release the clutch. If not enough coolant flows from the high pressure side through the evaporator, then the low-side pressure can drop below about 23 PSI. SYMPTOM SUMMARY The air conditioning system is not cooling as expected. Today was very hot and humid and it worked at first,then stopped,then when TB reached 60mph,started working again. Did not want to charge the system if there is refrigerant at the correct level. The AC pulley is attached to an electronic clutch, which allows the pulley to spin freely when the AC unit is not in use, but, once the compressor is activated by the AC switch, the clutch engages and the pulley drives the compressor. If I take it out, and put plate back on with basically no shims, then the gap is below what is required. The AC was totally rebuilt about 13 months ago. Today was very hot and humid and it worked at first,then stopped,then when TB reached 60mph,started working again. Hotwire the AC clutch and start the engine. When you engage the clutch (push it in) the gearbox internals stop spinning, hence the noisy bearing is not turning. When it does this it gives this horrible sound like when u try to engage a gear without the clutch pressed down properly. Both of these switches are located along the pressure lines under the hood. Turning system on, the clutch engages but can't turn due to compressor lock-up so belt slips causing the squeal. In hot weather (>80 degrees), when I first turn on the AC it blows nice and cold for up to 30 …. I jumped both switches and pressed the "AC On" button - clutch did not engage. I could take a pry bar and "help" engage the clutch by pushing in on the clutch. If high pressure the problem, then get it fixed. It makes sense that I need to pull a vacuum to do it right, but I had an extra 15 minutes tonight, decided to see if I could get this ac thing going. My AC seems to work fine for about 15-20 minutes and then just stops cooling or defogging. The computer is not throwing any codes. ac not cooling but freon full and compressor working. hey everyone. A safer way to test the clutch is with the engine off, disconnect the clutch wire at the compressor and jumper from the battery plus terminal to the compressor wire. I used that cheapie pressure guage - it connects to the fitting on the low side tube. but i did a test on the ac clutch relay and pulled it out of the fuse box under the hood and tried a trouble light and i have no power there?anybody have any ideas or a wiring diagram would help. I have a simular problem. The clutch then engages and turns on the fan. Try to turn it by hand, If it turns super easy then the clutch needs to be adjusted. Applications for Free-Wheel Clutches. you wouldn't think it so but if the gap between the outer drive plate and the pulley is too wide the coil (electromagnet) can't keep the drive plate pulled tight against the pully, especially when hot. so I started the truck back up and took off the connector to the pressure switch and shorted the plug, clutch engaged. If the AC clutch engages, then it is the clutch. But we first must know whether or not the clutch engages when the A/C blows warm air. Then it was no problem, it sucked up the 3 cans of basic no-additives carquest freon I had. The "low range" on the dial goes to 25psi, then the "full range" goes 25psi to 45psi. the bearings went out of the compressor so i replaced it with a brand new one and replaced the r134,now it is clicking off and on non stop as rapid as it possibly can. air conditioner works 10-15 min then stops. A/C Light Blinking How to Confirm Compressor Clutch Engages and then turned on the AC and the clutch is not engaging still. Fan stays on, I do notice fan free spins for a few seconds when you shut the engine off. 2000 chevy truck 5. rivets you seeing are part of dampening mechanism, just like you have in clutch plate. The clutch serves two purposes: Engage the load – Make the go kart go; Disengage the Load – Make the gokart stop or slow down; Engaging the load has more going on than just pushing the gas, or pulling a lever. All was operational. It seems there's quite a few with weak a/c clutch coils. Car makers use an electro-magnetic clutch to. ) Controller requests it by the temperature you command in the car. With the A/C on, the clutch face IS magnetized and seems like it is attempting to engage spinning slowly and making half turns every so often. Applications for Free-Wheel Clutches. The clutch never started to engage untill I tried to fill the system. My air conditioner clutch stops engaging after driving in hot weather. If you’re approaching a stop sign and you want the engine to continuously turn, then the clutch comes in handy for this. IF the still doesnt engage it then you need to run power directly to the AC compressor and see if the compressor engages then. But we first must know whether or not the clutch engages when the A/C blows warm air. Ends up at around. i have a 98 s10 2wd 4. The a/c system was ice cold all summer. clutch and. Friction between the two parts forms a solid connection and the engine’s motion is transmitted to the transmission. MINI AC (A/C) Inoperative – Air Conditioning Compressor Clutch Not Working. ac not cooling but freon full and compressor working: If that's the pressure just sitting there then the. Or you can follow the schematic on the side of the relay and use a volt meter to test it. Has freon and ac specialist said its good and that the problem ius electrical and has to be taken to dealer. car is a '99 maxima. But then when I hit the ac button the compressor engages and you hear this loud and i mean LOOOOUDDDDDD squeal/skreetch!!!. Selecting and Applying Clutches and Brakes. normally when things cool down the clutch will engage again. Seems like pretty straightforward stuff. Since my coolant/thermostat has been fixed, my AC has never turned back on and now my Compressor clutch won't engage. If it pulls in your clutch air gap may be too wide or you may a have weak AC clutch. I've got forward and reverse, but only in third. Mechanic's Assistant: What is the make/model/year of your car?. If the clutch engages, then check the power supply to the clutch, including the system protection devices and electronic compressor controls. and is the same for the two on the compressor i tried swapping relays with the one. It’s often the result of worn or contaminated clutch components. I jumped both switches and pressed the "AC On" button - clutch did not engage. Diagnostics:. Conditions for the A/C computer to engage the compressor are: A. air conditioning on my 2500hd duramax is not working properly. If you have a situation where your car’s air conditioner compressor clutch doesn’t engage, try the troubleshooting techniques described here. AC compressor clutch slipping? My ac compressor clutch engages for about 4-5 seconds then stops for 4-5 seconds, it does that over and over again, the air is not cold, freon is good, could this be what is causing the problem? Can i fix the clutch without replacing the compressor?. But the weak link in a manual drivetrain is the clutch. A/C compressor cycles. Why? Why for art thou. If not, then this offers an explaination why the AC clutch won't engage. I checked the pressure and it was over 100psi. If the compressor clutch does not engage, turn off the engine. Ok ,you need disconnect fan control module and see is A/C clutch will stop clicking while you disconnecting A/C plug(one you have disconnect now). The van stalled and would not start for about 10 minutes. After zillions of such cycles, the clutch eventually wears out. The A/C switch on the dash switches the compressor on, with one exception. When coming to a stop, when I push the clutch in, the engine revs up about 400-500 rpm (around 1500), not a lot, but noticeable, and then when I come to a stop it returns to normal, around 800. Inspect the compressor clutch and see if it is able to rotate freely without any resistance. The negative side is fine. With every shift the clutch is disengaged and engaged. As a result, the clutch won’t engage, and the lawn mower blades won’t rotate. The AC pulley is attached to an electronic clutch, which allows the pulley to spin freely when the AC unit is not in use, but, once the compressor is activated by the AC switch, the clutch engages and the pulley drives the compressor. In this situation the buzzing sound is caused by liquid refrigerant entering the compressor intake port. Toro 52" walk behind, clutch won't engage [ 3 Answers ] I have a toro proline 52" deck with a 15 hp kolher motor manual start no battery, when I engage the clutch it will run for a few minutes and then blow a fuse, we checked it out and now the clutch doesn't engage at all with the switch. It's #1 in the diagram below:. Also there seemed to be hot air coming thru the vents with nothing on. Both the pulley and the clutch should be spinning.
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