Check the fusebox first, which is located under the hood near the driver's side fender on 1999 through 2010 Silverado model years and on the left side of the instrument panel on older models (refer to your owner's manual). The most common causes of broken air conditioning are leaks or compressor issues. You can do it without even getting under the car or popping the. So i brought my car the an auto shop near by trying to refill the freon. I know that when i switch ON the AC,the clutch at the compressor works. The o-rings are used to seal the connection between lines and components in the ac system. Call a professional mechanic immediately if you are not able to start or engage the AC compressor clutch. After buying new belts I realized the belt didn't just break because it was old, the air conditioning compressor pulley won't spin at all when I try to spin it with my hand, making me believe that the belt was being dragged around a pulley that wouldn't spin, forcing it to snap. You may be in some small way reducing the life of your starter, but this would be pretty negligible. Also if you short out the compressor it will engage and cools good. Troubleshooting AC Compressor Issues. It was not working at all. AC fans not turning on while AC is on. aircon compressor clutch does not engage even with a + 12v supply to it A few basic reasons why an air conditioning clutch does not engage, even if you have a power supply down to the compressor. my - Jaguar 2002 S-Type question. 5 0z (do not exceed amount of oil) to the lines to a total of the compressor combined not exceeding 7. power to activate the relay). The air conditioning compressor requires torque from the belt system on the engine to power it. my car is toyota Avalon 1996. The AC recharge kit that you have will not work, it actually doesn't even fit on the high. A second sort of "short cycling" of the compressor also suggests that diagnosis and repair are needed: if an air conditioner or heat pump compressor runs for a very long time (i. Engaging the AC compressor clutch at home is not rocket science. Your compressor does not have a sump like your engine does, it relies on the proper volume of refrigerant in the system to push the refrigerant oil back to the compressor. The circuit is controlled by the compressor relay, which receives power from fuse # 16. 6 people found this helpful. Check both sides, but if you have 110psi at system off, then system will turn on for sure. The main problem is possibly due to a pressure switch or faulty relay. This pulley spins at a rapid rate, so please keep tools and hands away while it is operating. Turning the AC off mostly just stops the compressor which is all that's happening when the engine is turned off. I have checked at the relay, and it is not getting power (i. The Easy Way to Use a Recharge Kit for Car AC; Want to Discharge Car AC at Home? Look into This! How To Manually Engage AC Compressor Clutch. How do you know it is time to replace the air conditioner car compressor clutch coil? How much does it cost to replace a bad compressor contractor on an ac unit? What could be the cause of my fan running when my car is off? Why does my car stall when the ac is turned on? Why does my Trane compressor quickly turn on and off again?. Will low refrigerant level cause the AC compressor clutch to not engage. put 2 pressure gauges on your car. Buzzing Noise- A sign that the AC Compressor is beginning to go bad, a buzzing noise may be heard when turning the AC on. My problem is, when driving in the tollways with no traffic and with speed reaching 80 kms per hour, there is no cold air coming out of the AC. When it senses that it's cold, it turns off the compressor. If not, either the compressor is broken and would need to be replaced, or there are faulty wirings preventing the compressor from powering up. When the AC is on, the compressor clutch activates, wherein the drive belt on the engine now turns the compressor which in turn is compressing refrigerant so you can be nice and cold. The vehicle was parked for most of the last 25 years, so I imagine the lubricant had drained from the compressor. The air conditioning compressor is one of those parts that typically gets a lot of usage and provides that critical cool air on hot summer days. This Nissan Altima AC Compressor replacement manual only applies to 2007-2012 model with a 2. The AC Compressor is driven by a belt attached to the engine. 5 years, its been great. The compressor will not cycle off when the A/C is on. If an AC compressor could not turn on, this process could not begin. You should see the clutch engaging and disengaging the compressor as the pressure builds and drops. To run this compressor, the car's engine is directly connected to the pump rotor of the compressor with a belt. Even if the system is not charged, the compressor does not turn easily but it is possible to turn. 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. For a couple of months it was intermittent, but now it is permanent. a/c compressor will not engage, freon is good, put a new cycle switch on and checked fuses "all good". It plays a critical role in this complex process, making sure your car stays cool when you want it to be. Check the air conditioning compressor clutch wiring for a voltage with the a/c switch on high and fan on high. It just happened to kick the bucket after you used it. Most people would like to see frigid cold air blasting from their small dash vents instantly upon request. Newer luxury cars have thermostats -- you select a temperature, and the control system does the rest -- but most cars simply run the AC compressor the entire time the AC button is activated. 5 volts, the compressor will not turn on. Be as descriptive as you can. Test Your Fan. aircon compressor clutch does not engage even with a + 12v supply to it A few basic reasons why an air conditioning clutch does not engage, even if you have a power supply down to the compressor. It's a silly use of the term, but Americans have never been overly consistent with our use of English. Open up the hood and listen for the AC compressor and clutch to engage. The past few days the temp dropped and I haven't used the ac. The only way to troubleshoot a capacitor is by replacing it and testing the unit, so this is commonly done when an AC compressor won’t turn on. If you swap it out and the compressor is not kicking on you have a different problem. If the fuse associated with your A/C system goes, the power to certain parts will stop. If not, check the electromagnet (also called a field coil). Your car's defroster uses air conditioner. Car AC compressors usually last 10 years. I found the leak was the "o" ring between the low pressure hose and the compressor. I havent used a/c in years so i just wanted to try turning it on and the light on the button doesn't come on anymore. Make sure your A/C is running at its best. If your central air conditioner isn’t working at all or is not adequately cooling your home, it is easy to suspect the compressor because it is the heart of central air conditioning. Leave your car's hood open and turn on the engine. If the fuse associated with your A/C system goes, the power to certain parts will stop. as per him, the pressure was low on high side and high on low side. To diagnose why the air conditioning in your car isn't working, start by turning your car on and setting the AC to full blast. -A seized compressor will cause the AC to be disabled, and as a result the fans won't turn. If it doesn't turn on, then your pressure switch could be bad, or your wire to the compressor is broken, among things. AC Facts and Myths. When the compressor draws in excess amperage, the system shuts down as a preventative measure. The entire process is powered by your engine's drive belt (or belts). The good news is, as much as 80 percent of the causes of AC compressor failure are preventable if the problems leading to the failure are corrected in a timely manner. If not, check the electromagnet (also called a field coil). If only the pulley is turning. Replacing a car air-conditioning compressor is expensive and harder than it looks. I discovered this after going back out the to car and discovering my battery was dying. There is no mystery. Your air conditioner has to be absolutely air tight. You can turn the clutch by hand?. Whe I turn it on there is no problem with the blower but it just blows warm air. Re: ac compressor won't turn on - 00 Mercedes C230 This system is a lot more sophisticated than you could imagine and you are in no way equipped to diagnose it. The other possibilities include faulty pressure switches, faulty compressor clutch, a fault in the climate control panel … etc. Re: Air conditioner compressor not coming on? That is a good possibility (too cold to run). If the contactors contacts do not pull in or close (completing the high voltage circuit) voltage will not pass thru to the compressor. How to diagnose my car AC compressor is not turning on. Newer luxury cars have thermostats -- you select a temperature, and the control system does the rest -- but most cars simply run the AC compressor the entire time the AC button is activated. If the compressor seam or front seal are leaking, the compressor is bad. Before the compressor turns on, a special electro-magnetic clutch, conveniently called the "compressor clutch," is necessary to engage and disengage the compressor cycle. Your air conditioner has to be absolutely air tight. It might not happen immediately, but failure will happen!. There are a lot of factors that determine whether your compressor will turn on, including blockages and problems with the thermostat that may prevent the compressor from working properly. If the fuse associated with your A/C system goes, the power to certain parts will stop. Compressor Terminal Wiring Diagram. Nevertheless, if this does not help, it might be because you are using a bad AC compressor clutch. This is probably due to the o-rings leaking. Before replacing the wheel well liner and wheel, you may want to start the car with the AC on. Most people would like to see frigid cold air blasting from their small dash vents instantly upon request. The outside condensing unit is making strange noises. the cooling system is not able to reach the indoor set point on the thermostat) and the the compressor shuts off for just a few minutes, then re-starts, I suspect. The thermostat control uses a sensor bulb to monitor room air temperature which in turn operates a set of enclosed electrical contacts to supply power to the compressor circuit. If your AC is not cooling but runs: 1. Compressor Terminal Wiring Diagram. When I turn the AC on (GM A6 compressor) the alternator "quits charging". Many thanks to the AC Service Tech Channel! Problem: This problem is probably the second most common problem that I see every summer in our HVAC business. A/C Compressor Clutch do not engage, Cooling Fan do not turn on, Condenser Fan do not turn on, Ceiling light do not turn on when I open a door, emergency brake dashboard indicator always on. Motor running, AC on max, fan on high. AC Pro Products. For more depth, let's go over the whole system again to give you a clearer picture of what an AC compressor does. But I have no clue what to expect if its the compressor. An AC compressor circulates refrigerant. That would pretty well explain the lack of cold air, huh, Charles? Plus, while the AC's not working, warm, moist air enters the cabin and builds up around the AC evaporator under the dash. When it senses that it's cold, it turns off the compressor. Though it is unusual for a compressor to stop working, there can be several common reasons why it would. The fact it lacks a built in battery and has no way to plug into your car for direct power means this is not really a great emergency compressor to keep in your car boot – unless you’re going to store it with a battery all the time. When it's not driving the compressor, the clutch pulley turns on a double row of ball bearings. If you see 12V going to ac compressor with key out your problem is in fcm and your battery will be dead. Electrical Load shouldn't be immediately applied to any automobile when turning it's engine on. It worked for about a week now will not come on, put another compressor and a new clutch relay in. It allows the pulley that's driving your compressor to be disconnected from your compressor, effectively turning your compressor off. Even the electric fan I have that kicks on doesn't cause this situation. If you suspect your AC pump or AC compressor might not be working, there are a few simple things you can do to get to the bottom of it. So it's it blows cold war × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. Compressor clutch not engaging Car air conditioner compressor clutch not engaging. The compressor clutch tells the compressor when to turn on or off so that the Freon (refrigerant) is correctly pressurized for use by the condenser which is then delivered. An air conditioner's compressor controls the distribution of cold air throughout the house. The car should not be running at this point. Do NOT turn the car on while the clutch is off the pulley or when any tools are attached to the clutch. Changing the compressor clutch could be the only solution in this case. Thought I try to put some 134 a in( or whatever we have decided to call it by now) lol. The A/C compressor is considered the heart of your vehicle’s air conditioning, since it pumps compressed refrigerant throughout the system. Ask your mechanic to show you where the AC compressor clutch is. Because it functions in a continuous cycle on and off, it is subject to wear every time the AC is turned on. In 1954, the Nash Ambassador was the first American automobile to have a front-end, fully integrated heating, ventilating, and air-conditioning system. I checked continuity from the AC compressor wire that leads to the ac relay and its got continuity so im still trying to solve why the compressor wire is not getting voltage. Now the air conditioning compressor wont come on. A high pressure gauge can be very usefull in further troubleshooting the system and is what the professionals use. Have a mechanic check over the electrical system for the compressor, and this could put your AC back in business. Different Ways to Diagnose and Detect AC Problems. The problem with topping up your system is you don't know how much refrigerant is in your system to add to it. Could it be the contactor? What else? It is an American Standard Allegieance 10, model number 7a0048b100a1 ? I think the part no. There hasn’t been a belt on the car for the ac in about a year. The air that is blowing is warm and it is coming from the front feet sections only. when you say "have a freon charge hooked up", do you mean actively charging the system again before turning on the AC? As I understand it, the system was charged, then stopped when the compressor would not start. The system is smart enough to realize there was no freon left and would not allow the compressor to turn. Went to turn over the engine and it just dies. AC Pro Products. Your car's defroster uses air conditioner. new A/C compressor - wont turn on ok, so a friend brought me an 04 passat and told me that VW had diagnosed her car with a bad A/C compressor, so i replaced the compressor, pulled a vac on the system and started to put freon into the system. AC Compressor Clutch turns on and off - posted in Virtual Mechanic: Any ideas on why it would act this way? I filled it up to about 20psi and it was working ok but not quite cold enough (just cool). You should see the clutch engaging and disengaging the compressor as the pressure builds and drops. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. is c147094p09 - unit mfg in 2002. No problems until the next morning when noticed that the compressor wouldn't shut off when the camper was cooled enough. The intake of the AC compressor pulls the refrigerant in from the evaporator. Third, the A/C compressor relay is a $4 throwaway part, like the fuel pump relay. If you find it is low, you have a leak that you should eventually fix. 2) Open the vehicle's hood. By Carl O'Reilly. Here are four of the most common:. Turn on your AC even if it isn't working, and go to the front of your car to listen to the compressor. This is determined by watching the outer plate(?) on the compressor spin and stop. Aside from the extra $400+ for a new compressor, drier/filter & required recharge, there is considerable risk that the recharge may not be done correctly - infant mortality of replacement AC compressors is very high due to improper charging procedures (incorrect amount of oil, wrong oil type, failure to completely recover all old oil & refrigerant, failure to flush debris from the system, etc, etc). Five Reasons an Air Conditioner Compressor Will Not Start. My AC started acting up last night. If so, try the troubleshooting techniques described here. Voltage drops to 12. Drop In: Lots of different companies sell "drop in" replacement for R12. When the compressor is not working, air conditioning of any kind comes to a stop. The magnetic coil does not turn since its magnetism is transmitted through the pulley to the armature. You should see the clutch engaging and disengaging the compressor as the pressure builds and drops. NOW for some stupid reason the compressor will not switch on itself. Otherwise, the system would freeze. Turn on your AC even if it isn't working, and go to the front of your car to listen to the compressor. In 1954, the Nash Ambassador was the first American automobile to have a front-end, fully integrated heating, ventilating, and air-conditioning system. This is a full explanation of how the system works. When this occurs, the compressor clutch will not engage, and the system will not be cool. CarComplaints. To run this compressor, the car's engine is directly connected to the pump rotor of the compressor with a belt. I was thinking the mechanic balls my AC up after putting a 2nd hand head into my car. Air conditioner compressor kicks on and off So after a long winter I tried to use my AC and the fan worked but the air wasn't cooling. Oldsmobile Cutlass Air Conditioner Compressor is Not Coming On. There are several reasons for your air conditioning unit to fail. Newer luxury cars have thermostats -- you select a temperature, and the control system does the rest -- but most cars simply run the AC compressor the entire time the AC button is activated. It's a silly use of the term, but Americans have never been overly consistent with our use of English. Can a bad cooling fan clutch cause the belt to squeal? I have had the air compressor replaced and all new belts. If you see 12V going to ac compressor with key out your problem is in fcm and your battery will be dead. The low-temp (blue) side should be around 75 to 80 pounds in order for the component to operate the low-side switch and turn the compressor on. that also has to be powered up to get the compressor to turn on (digging into it now) even though one isn't shown. The compressor isn't always on, and needs to turn on and off in order to keep your car's cabin at the temperature you set it to. The armature plate and hub assembly are fastened to the compressor drive shaft. Just so I am on the same page with your suggestion above. The venturi pump didn't come with any hose to connect it to the low side port so I had to make my own. The compressor isn't always on, and needs to turn on and off in order to keep your car's cabin at the temperature you set it to. SYMPTOM SUMMARY The air conditioning system is not cooling as expected. This car has the manual ac with the two scrolling wheels to set temp - NO digital display. Sometimes is sounds like the compressor tries to come on and cannot and then clicks off. We buy an air conditioner when we want to cool a room. Causes of Air Conditioner Compressor Problems There are several possible causes as to why an air conditioner's compressor would quickly turn on and off. It won't turn when the magnetic clutch engages, and you may hear squeals of protest from the drive belt. The compressor will not cycle off when the A/C is on. The AC only works when the car is cool. As most of you know, this is the coldest it has been for a sustained period of several days for something like 100 years. 5 from the 14 volts otherwise. A/C compressor won't turn on in my Lincoln Towncar. The van stalled and would not start for about 10 minutes. The AC switch is off and the location dial is not set to defrost, and the fan is off. use 15mm open end wrench or anything similar to pull serpentine belt tensioner towards the front of car, this will release the tension of the belt and have a nail ready so that you can push the nail through the both openings and lock tensioner in released. Make sure your A/C is running at its best. If not, either the compressor is broken and would need to be replaced, or there are faulty wirings preventing the compressor from powering up. In an air conditioner, it works by compressing cool, low-pressure,. When the AC is on, the compressor clutch activates, wherein the drive belt on the engine now turns the compressor which in turn is compressing refrigerant so you can be nice and cold. The air conditioning compressor is one of those parts that typically gets a lot of usage and provides that critical cool air on hot summer days. The compressor isn't always on, and needs to turn on and off in order to keep your car's cabin at the temperature you set it to. Voltage drops to 12. Fortunately, your air conditioner not blowing is a common problem and a relatively easy fix without having to bring your car to the repair shop. AC Compressor Clutch turns on and off - posted in Virtual Mechanic: Any ideas on why it would act this way? I filled it up to about 20psi and it was working ok but not quite cold enough (just cool). This is determined by watching the outer plate(?) on the compressor spin and stop. I've recharged these before, but not with a new compressor. That is what I meant the first time. The Easy Way to Use a Recharge Kit for Car AC; Want to Discharge Car AC at Home? Look into This! How To Manually Engage AC Compressor Clutch. Re: Air conditioner compressor not coming on? That is a good possibility (too cold to run). The thermostat control uses a sensor bulb to monitor room air temperature which in turn operates a set of enclosed electrical contacts to supply power to the compressor circuit. Turning the AC off mostly just stops the compressor which is all that's happening when the engine is turned off. still not working. Ok my compressor clutch would not turn on so I ran a jump wire to it and it fired right up, also checked freon with gauge and it read fine cold air began to flow. The problem is a bit different than the first time the clutch coil went bad. You will see and hear a kick and a change in tone (and idle speed momentarily) when the AC compressor kicks in and again when it turns off. Comments: I have a 96 328i that I replaced the belt for the ac compressor today. Before the compressor turns on, a special electro-magnetic clutch, conveniently called the “compressor clutch,” is necessary to engage and disengage the compressor cycle. The van stalled and would not start for about 10 minutes. Do NOT turn the car on while the clutch is off the pulley or when any tools are attached to the clutch. It was not working at all. If it's not, you may need to fix the cooling fans on your radiator or replace the cabin air filter. If the battery voltage reads below 12. There is no mystery. When the AC is on, the compressor clutch activates, wherein the drive belt on the engine now turns. as per him, the pressure was low on high side and high on low side. An air conditioner's compressor controls the distribution of cold air throughout the house. AC/Delco replaces the clutch and compressor as a unit. Even if a compressor is still turning, it could must be replaced if it truly is leaking, creating extreme noise or not functioning appropriately. When the compressor kicks on you can usually hear a click and feel the engine struggle with the extra load. A high pressure gauge can be very usefull in further troubleshooting the system and is what the professionals use. Before the compressor turns on, a special electro-magnetic clutch, conveniently called the “compressor clutch,” is necessary to engage and disengage the compressor cycle. I can "jump" the cycle switch plug and the compressor will come on and the a/c works fine. Small cans of the proper oil can be installed using the newly created vacuum to pull the oil into the system. put 2 pressure gauges on your car. If you're looking for help and want to draw people in who can assist you, use a descriptive subject title when posting your message. Vag-com read out on my car but it does. If the battery voltage reads below 12. The circuit is controlled by the compressor relay, which receives power from fuse # 16. The outside unit shakes when it starts up. Put on the used 1, recharged it (yes,. does the cooling fan come on? ( it must come on when the ac is on, there needs to be airflow for the condenser to convert the vapor refrigerant into a liquid again) Yes, it does Do the buttons/switches on the dash "feel" normal when you turn on the ac?. Make sure your A/C is running at its best. Most automotive refrigerant is today is R134A. Compressor problems - Air Conditioner Compressor: problems such as an aging air conditioner compressor motor that is at or near the end of its life may be unable to properly compress the returning refrigerant gas to a sufficiently high pressure. Does your air conditioner turn on and off repeatedly? This can be a very frustrating experience for any home or business owner trying to battle the stifling Singapore weather, which can be unbearable at times. It's a silly use of the term, but Americans have never been overly consistent with our use of English. By Carl O’Reilly. That would pretty well explain the lack of cold air, huh, Charles? Plus, while the AC's not working, warm, moist air enters the cabin and builds up around the AC evaporator under the dash. A bad AC compressor clutch needs immediate fixing. The first thing you activate as soon as you press the AC button is the air compressor. Is this true or false? Out of all the vehicles I have ever owned, I have never done this "supposed" requirement and the only A/C problems I have ever had are, to my knowledge, caused from other issues. And you'll notice it fast. But hopefully, this article on troubleshooting when your AC won't turn on was helpful at getting you to where you need to be. It's AC works really well on City driving, with all the traffic and so. You might not notice how crucial the air conditioning compressor is until it's gone. The air conditioning system is a vital part of a vehicle such as a car or truck. DO NOT SUPPLY DIRECT POWER OR GROUND TO A WIRE IF YOU DO NOT KNOW WHAT IT DOES. Initially whenever d car is started d engine will make some noisy sound but when the AC is put on d notice d noise will go down. 1 on the high side, 1 on the low side. Watch the clutch to confirm it engages, then turn the AC off to confirm it can successfully disengages. Reasons Your AC Won't Cool | AC Stopped Working. Any suggestions? just found problem the. Before the compressor turns on, a special electro-magnetic clutch, conveniently called the “compressor clutch,” is necessary to engage and disengage the compressor cycle. Check both sides, but if you have 110psi at system off, then system will turn on for sure. The wiring leading to and from the compressor could also be damaged or worn away. First few days no problems. If the clutch doesn’t engage, the air conditioning compressor can’t pump refrigerant. com November 10, 2018 Post Author: OfficeTutes. indicating its on, but the compressor doesn't kick on until the PTS button is tapped twice. Then look at the front of the compressor clutch. You can turn the clutch by hand?. Voltage drops to 12. An air conditioner can't work without a functioning compressor. Nothing in the lines or in the openings of the compressor. Does your air conditioner turn on and off repeatedly? This can be a very frustrating experience for any home or business owner trying to battle the stifling Singapore weather, which can be unbearable at times. When the refrigerant is still locating in a compressor, it is often seen as the beginning part of an air conditioning cycle. If you swap it out and the compressor is not kicking on you have a different problem. Monday the ac quit working the econ red light is on and will not cut off. It will be OK but minus air conditioning. If strange noises are coming from the AC, there could be an issue with the compressor and it may need to be fixed or replaced. I just fixed my 2001 LL Bean 6 cylinder AC. Not getting power to clutch. If the contactor has proper low voltage applied to the coil and it does not pull in, it is a bad contactor. We'll explain more about each one below. If the pressure switch detects pressure and has power and has not failed, the clutch will engage. 2013 Altima. The cost would be $1,130. My AC Compressor's Not Turning On An AC compressor not turning on can be a major problem because it narrows your choices: Sleep in a sweltering sweat box or go over to your in-laws. No problems until the next morning when noticed that the compressor wouldn't shut off when the camper was cooled enough. The way to handle this is to connect a set of air-conditioning manifold gauges to the. Details Ford Auto Repair Questions and Answers. AC compressor is a smaller engine in itself and puts a lot of stress on car's engine. While there are a variety of reasons your car's air conditioning might not be operating at top performance, the most common are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. The dye check will not work if the system is too low and the compressor is not cycling. I checked continuity from the AC compressor wire that leads to the ac relay and its got continuity so im still trying to solve why the compressor wire is not getting voltage. We have already put the Cooling Fan/ AC control relay under the hood near the battery, the Fuse Box On top of the battery was burnt up and the Ambient Temp Sensor nead the wiper. Online car repair manuals. The cost would be $1,130. Final Thoughts on When Your Air Conditioner Won't Turn On. Most of the time this is sign of low freon. Hot air will result. Those guys are probably right on with the IAC and throttle plate but I would probably go ahead and put a set of gauges on the car just to satisfy myself that there was not a partial restriction in the system causing high head pressure on the AC compressor creating large amounts of drag at idle. CarComplaints. But as the noise is a whine not the screaming which, is normally associated with belt slippage, if you can remove the clutch plate and the eletro-magnetic coil, you can press out the bearing and replace only the bearing for about $20. Run air conditioning on a belt driven AC car, open the bonnet and watch the engine. Oldsmobile Cutlass Air Conditioner Compressor is Not Coming On. There are several reasons for your air conditioning unit to fail. In other words, "1998 Town Car" isn't going to indicate to anybody that you need help. The way to handle this is to connect a set of air-conditioning manifold gauges to the. Please use common sense. NOW for some stupid reason the compressor will not switch on itself. Thought I try to put some 134 a in( or whatever we have decided to call it by now) lol. How to get car's A/C blowing cold again. But if it happens to you, know that you are not alone. The air conditioning compressor requires torque from the belt system on the engine to power it. Here is exactly what I get:. 00 /hour to even touch itplease help me. My AC compressor is turning with the serpentine belt, but when I actually turn on the AC the compressor clutch does not kick in so the AC does not actually activate- how can I get the compressor clutch to engage?. Check the fusebox first, which is located under the hood near the driver's side fender on 1999 through 2010 Silverado model years and on the left side of the instrument panel on older models (refer to your owner's manual). (thus pressure reversal ? I'm not sure) He quoted around 650 (compressor) + 300 labor. Troubleshooting Tips. That is what I meant the first time. Air Conditioner re-fill and service. If your usual mechanic doesn't work on air conditioner equipment (some don't, it requires equipment that can capture refrigerant and such), ask him if he knows someone who does. It is essential to inspect your car’s air conditioning system from time to time and ensure that it is working properly.