Comments: i have a 2002 e46. NOT! - Duration: 3:32. There can be three reasons for You Ac to be making the noises in the indoor unit, but the knocking is caused by * Icing of the evaporator coils. Avoiding a catastrophe like this simply requires you to pay attention to the signs coming from your AC system. A hissing noise coming from your HVAC system is not something to be overlooked. Clicking noise when AC/Heat fan is turned on Hey everyone, So for the past week, it has been quite cold, and my precious 4runner has been outside each night, accumulating quite a bit of frost on the windshield. I would evacuate the. The compressor is indeed working properly. Hearing the hissing noise and not knowing why you are hearing it is causing you to stress even more. Hissing sound Post by Vegas05 » Tue Aug 18, 2009 7:50 pm i have a 2005 f150 supercrew and when i turn off my truck and walk around to the front i hear a hissing sound coming out from the passenger side front part of my engine. Enjoy!!! Buffalo4. It still blows cool air. The Noise Terminator worked extremely well, and without altering the original tone characteristic of your setup. When the hissing stopped, air was cold. All except th air conditioning, it no longer works. What Is Tinnitus? Tinnitus (pronounced ti-ni-tis), or ringing in the ears, is the sensation of hearing ringing, buzzing, hissing, chirping, whistling, or other sounds. Refrigerant (what most homeowners call Freon, the DuPont brand name of refrigerant) is necessary for your central air conditioner to cool your home. The E46 generation is one of the most popular 3 Series models. There may be a leak in your ducts allowing air or refrigerant to escape. 48-52 Ford Truck Mustang Ii Ifs Airbag 2 Drop 5x4. Your definitive guide to Hissing noise when brake pedal is depressed Inspection. I went to look at buying a 2001 S60 and when the car was running a hissing noise like air was leaking under that dash by the pedals. Recently what i have observed is that when i switch on the ac, there is a hissing noise heard from the passenger side ac vent. If you live in the Kansas City area, you may have a hard time dealing with the summer heat that comes after a long winter. Besides, if your air conditioner had even the smallest issue this past summer, it’s a good idea to have the system checked now, rather than waiting on it—waiting can lead to more serious problems. Before that, I used Apple earbuds. You won’t always be able to detect this hissing noise, but if you do, you know you have a refrigerant leak. For quite a while now, with my 99 Legacy GT, I've been tolerating a hissing sound coming from the vents in the cabin. You'd think white noise would sound great with swells and ambient playing, but it doesn't. As my air conditioning wasn't working I put in a can of 134a refrigerant. If the noise is similar to a scream, your compressor may be failing. Although they are in a state of panic, I know right away it's not a boa constrictor, rattle snake, or any other animal making that noise. The hiss also goes away if I hit the AC button. The air inside the cabin flows through the evaporator, which then cools the air. Free Sound Effects Follow @soundjay Welcome to Sound Jay's free sound effects web site! You are allowed to use the sounds on our website free of charge and royalty. If it's still buzzing, another source could be your unit's motor, which is usually a symptom that your motor is nearing the end of its life. Not only can this cause noise, it also wastes money because the air that should be circulating throughout your home is leaking into the walls. I am getting lots of noise in my CB and scanner any time that the inverter is on and it gets worse with each AC item that i power on. My 09 Enclave has had many problems with the AC system, and both evaporators (front and rear) had to be replaced. As my air conditioning wasn't working I put in a can of 134a refrigerant. AC Test Gauges. The hissing begins when I turn the car off. Hissing present, air is warm. Hissing Noise Hissing sounds indicate that there is probably a leak lurking somewhere, if you hear a hissing sound coming from your AC, it’s likely either a ductwork issue or a refrigerant leak. FM RDS TMC tuner with DSP noise masking and 15 preset stations. I already replaced the puller fan and it still doesnt work. Contact Hydes whenever your air conditioner is making noise. worked fine on the way home but now when the car is turn off I hear hissing noise coming from the air vents??!! ac was only blowing semi cold when i started the car again May 29, 2015 : Followup from the Pelican Staff: You could have a leaking evaporator. 1998 E430 AC Question I hear a loud hissing sound coming from the center vents in the car when the ac is on. I have an 02 LS V6. hi, my e46 shakes sometimes when engine is on idle. (just like a laptop AC Power Supply Brick) when plugged in it makes a hissing noise, almost like something tiny is boiling inside. 5 Power Lhd Rack Basic Kit. couple of days. It then blows warm air. Unless you put an ear up to the line, the air handler is louder. Here's a few of the most common noises found in car stereo and how to fix or avoid them. A hissing noise coming from your HVAC system is not something to be overlooked. Is your car losing power? In most cases, a loss of engine power is related to a mechanical failure in your vehicle. Turned on the A/C and the car stuttered a little bit which is normal, you could tell that the i had turned on the A/C. Your definitive guide to Car is making a noise Inspection. The noise was a VERY loud buzzing/hissing/low groaning sound that I have never heard before. I had a customer with a Toyota truck and a periodic hissing noise with the AC on, and we determined his expansion valve was at. I'll let you guys know if he does. As my air conditioning wasn't working I put in a can of 134a refrigerant. During normal operation, refrigerant runs in a closed loop in your AC system. Sound Engineering Every vehicle undergoes separate sound development in the sound laboratory before the exhaust systems are tested in all possible rev ranges, both indoors and outside, and on a drive-by. Although there are lots of other problems that can cause poor cooling the two mentioned above are ones that I find often. If a refrigerant leak develops, you may hear a light hissing sound as the refrigerant leaves through the leak. A common one is a hissing noise, which can signal a number of different issues that require professional attention. Usually can't hear this when just the a/c is switched while engine still on - however it is still there - it can last for a few seconds before it subsides. but it seems to be making hissing sound. In other parts of your air conditioner, a hissing noise usually means there is an air leak, which is probably not a serious situation. " This type of noise from the compressor can indicate a dangerous situation. “Trick or Yeet!” I shout to the children when I open the door. If it sounds much louder than usual, you may have a bad bearing or pulley on one of your belt driven parts — the alternator, power steering pump, water pump, AC compressor or supercharger could all be the culprit. Service, parts, cost & recommendations from YourMechanic. GMC Acadia AC not working properly AC is not blowing COLD air. My experience with Tomika was not very pleasant. 1997-2006 Expedition & Navigator - Hissing sound when A/C is on - Hello everyone I have a problem with my 2000 Expedition 4x4 XLT. I think the noise is just related to very high ambient temperatures and not. , House, 2 replies Central air unit has a high pitched noise, House, 19 replies. Listen for a hissing sound from the AC system;. BMW R134a & R1234yf Air Conditioning Vehicle air conditioning is now a very specialist field. After driving for an hour or so with the AC on (of course), when I shut the car down and get out I hear the coolant storage pump come on for a half-minute or so then go off (normal), but then I hear a very low-level hissing-groaning sound (not a sharp hissing, but a hissing sound with a bunch of bass note in it), that almost that gives me the. Among the possible causes are leaky refrigerant lines, an internal valve leak or a serious issue with your compressor. But something that sounds like a passel of snakes writhing under the hood often leads to a diagnosis of ill health. AC Schnitzer exhaust and body accents. Tightening the components work as a good option. Your definitive guide to Car is making a noise Inspection. It occurs while running fan with air on or off. The noise was a VERY loud buzzing/hissing/low groaning sound that I have never heard before. Although this hissing noise, sounds like a bad noise, it's actually a good air conditioning noise. I have a 2005 model Esteem Vxi. As soon as I started charging it, it worked again. The defrost and just vents running don't make any abnormal noise. My car has an automatic transmission. Hissing Noise Hissing sounds indicate that there is probably a leak lurking somewhere, if you hear a hissing sound coming from your AC, it’s likely either a ductwork issue or a refrigerant leak. The sound goes away when the brake peddle is pressed. BMW E36 A/C Problems – Air Conditioning – 318i, 323i, 325i, 328i, M3 We immediately noticed that the air conditioning was much colder. Hissing Noise-One of the more common weird sounds that drivers may here coming from the air conditioner is not a bad sign at all actually. The A/C works great but I was curious if anyone else has had this issue? I found a couple of other threads with a similar issues but there wasn’t any real feedback. Butim not too sure. That tube thing is usually covered by a rubber cap and if the cap gets broken it will make a hissing noise. it would stop when i turned it off. Working fine again but its still make that hissing noise. A hissing noise coming from your HVAC system is not something to be ignored. Hearing the hissing noise and not knowing why you are hearing it is causing you to stress even more. I took it to a repair shop, he "recharged" it, worked "ok" for about month with minimal hissing, and then went warm again and hissing was continuous. This may be a stupid question, but here goes. 0 hissing noise under the inlet manifold. There is or should be a drier near the condenser, the rad, using your hand feel it, then using your ear listen to it, is it noisy?. It still blows cool air. I had it changed out again under warranty and this one was quiet. Ive seen posted elsewhere of people having the wind noise addressed. ATS also offer a top up service - slightly cheaper at £44. I would like to not have that noise anymore, albeit a pretty quiet one. At 00:22 - 00:25 you can hear a hissing sound when accelerating from 55-65mph the other times were just too noisy to pinpoint. - Takes a while with A/C on before it makes the noise maybe 5+ minutes. If you can hear a strange noise coming from the A/C, however, you should try to identify the problem and perhaps address it yourself. This time, they Car Throttle's BMW E46 330d Touring finally. Have you ever wondered why your air conditioner is making an annoying hissing noise? If you hear hissing, bubbling, or gurgling coming from your air conditioner, it's likely because you are low on refrigerant and have a leak. Hissing HVAC Noise Descriptions & Recordings Hissing air conditioner or heat pump noise cause & repair. Could it be the break booster? I am not sure. A vibrating/buzzing noise is normal if. I already replaced the puller fan and it still doesnt work. Hard to explain. It recently started making a hissing noise or kind of a sucking air noise coming from the drivers side of the engine like by the intake when you press the accelerator. Diagnosing a transmission is the same as anything else; it often ends up being a process of elimination. 2000 E46 323i AUTO Aircon Problems - Hissing Noise did probably less than 500 miles and now when the AC button is turned on theres a hissing noise coming from the. “Yeet?” one says confusidly. It sounds like. It just started doing this recently. entertainmentscene360. the sound closely resembles the sound that steam makes, but slightly muffled and it comes from somewhere behind the dash. When the AC compressor is on, it puts a significant load on the belt, tensioner, pulleys and engine. It is NOT the blower fan since that is quiet as soon as I turn the AC off. 4L Eddie Bauer Expedition. Recently I noticed a hissing sound coming from the front center vents of the AC when the AC Compressor is on. The noise is constant, with high frequency. There is an ond and off hissing sound from the - GMC 2009 Acadia question. leaking discharge (high pressure) hose I also mentioned a hissing noise recently heard and he recommended replacing the expansion valve while the other other works is being done. Working fine again but its still make that hissing noise. Although they are in a state of panic, I know right away it's not a boa constrictor, rattle snake, or any other animal making that noise. The chattering noise is produced when a rat grinds his teeth together and can indicate both stress and relaxation, while squeaking and hissing convey fear, pain or alarm. I went to look at buying a 2001 S60 and when the car was running a hissing noise like air was leaking under that dash by the pedals. Is your air conditioner making a hissing noise? Find out what the noise means and how to fix it. I noticed today that if I turn the air conditioning on, I can hear a hissing sound which seems to come from the center of the console, or near the passenger side. if you remove the drivers side under dash panel you might see it. Patient continues with car started with no pressing on the brake and even with the e brake off engine in park. AC Schnitzer Aluminum Hand Brake Air Filter Replacement Oil Level Sensor Replacement More Engine / Mechanical - BMW E46 DIY. Clicking noise when AC/Heat fan is turned on Hey everyone, So for the past week, it has been quite cold, and my precious 4runner has been outside each night, accumulating quite a bit of frost on the windshield. The perfect example is when your AC is making a hissing noise. Biggest selection of at hard to beat prices. It makes a hissing sound when I turn it on which is the first sign that it is going down. Bimmerfest is the premiere website for BMW owners around the world with interactive forums, photo galleries and an invaluable resource into the minds of true BMW enthusiasts. Then, when the AC turns off, the filter drops to the grille, making a slamming or thumping noise. Car ac making hissing noise - The hissing sound is most likely the refrigerant going through the expansion valve. On our way to the house this evening, I turned on the ac and I noticed that the hissing noise never went away like it had done in the past ( in the past it would only hoss maybe 5 seconds the. E46 330d 135kW,1/2 boost lost, cracked hose? whoosh sound. A buzzing sound coming from your air conditioner or heat pump points the finger at excessive vibration. Look over the engine for any spots that look like they are rubbing. The AC is on the wall to my left when I watch TV and sometimes (not all the time depending on who knows what) the right hear hiss gets crazy loud and annoying. I can hear a loud hissing noise coming from each light. Hard to explain. If you need mirrors we have. 4 Power Stroke Hissing Noise. Reasons for that hissing noise. It always starts after the second or third attempt. This is a perfectly normal condition when the engine is turned off as the pressures equalize within the a/c system. 09 Accord V6 Hissing Noise when A/C on I can only assume what your hearing is pressure being built up in the AC system when the compressor cycles on. com and affiliated sites. The expansion valve, which lowers the pressure of the refrigerant gas as it moves from the condenser coil, creates brief a hissing that lasts only a few seconds. My air conditioner on my 2003 BMW 325i keeps on going on the fritz. Hissing‑A hissing or whistling noise could also be due to a problem with ductwork. You can reach us 24 hours a day, every day. Thermal noise is unavoidable at non-zero temperature (see fluctuation-dissipation theorem), while other types depend mostly on device type (such as shot noise, which needs a steep potential barrier) or manufacturing quality and semiconductor defects, such as conductance fluctuations, including 1/f. However, if clicking still exists, the Thermostat has blown and you probably need professional air conditioner servicing. The E46 generation is one of the most popular 3 Series models. We provide top quality service at a fair price!. When this fluid is running low or depletes, your air conditioner will struggle to keep your home cool and comfortable. 2010 Ford Focus SES Just replaced the evaporator core and hissing sound has returned? What is wrong with my car ac? - Ford 2010 Focus 2. Electrical - BMW E46 DIY. Car Air Conditioning Not Working: Why It's Happening and How to Fix It. There's never a good time to discover your air conditioner is malfunctioning. Like the title says, the AC was absolutely freezing the last time I drove the car, today it blows out warm air. Hearing a hissing noise most likely means air is escaping from your system. The rubber deteriorates and can leak causing a vacuum loss. If a refrigerant leak develops, you may hear a light hissing sound as the refrigerant leaves through the leak. We'll talk about some problems this can cause and what your options are. right away. For some contactors humming is more audible. The return line (uninsulated) line coming from the evaporator has a loud hissing sound. The exhaust pressure will rise and the small gape steel corrosion in you clam will make noise. Naturally, this is after running the system for a while on a hot summer day. Search Fixya. When the heat pump is defrosting in 25 degree weather, the noise is loud enough to be audible in adjoining rooms, through 8' of distance and a sheetrock wall. If you hear a rattling sound it can point to AC compressors mounts that have become loose. Refrigerant, commonly called Freon, is the chemical inside your air conditioning lines that turns your homes warm air. Has anyone had this issue before? When I turn the AC on there is a hissing sound coming from the left rear somewhere. low airflow is to listen for a soft hissing sound anywhere along the refrigerant coils. Thanks for your help guys, the mecahnic I spoke to specialises in AC, and said he will check for leaks for empty the remaining gas out and reharge it, so hopefully this will resolve the issue. please help. A common one is a hissing noise, which can signal a number of different issues that require professional attention. When the stress went away, so did the hissing noise in my ear. So, whatever noise that you are hearing in conjunction with the blower operation, is likely related to the blower motor assembly, not the compressor. As the refrigerant gas expands in this valve, it can make a hissing noise that lasts for several seconds and then goes away. How much does Hissing noise when brake pedal is depressed Inspection cost? Get an estimate instantly. 2000 E46 323i AUTO Aircon Problems - Hissing Noise did probably less than 500 miles and now when the AC button is turned on theres a hissing noise coming from the. The hissing sound is the Freon from the high pressure side slowly feeding into the low pressure side and this is a normal condition. I'm really worried about this because I heard the hissing sound about 2 weeks ago then nothing then last night my wife got hissed at. Buy BMW e46 ac hvac heater Blower Motor fan cage OEM Behr heating air conditioning: HVAC Motors - Amazon. We’ll go over these problems in more detail and discuss what you can do to fix them. A Hissing Air Conditioner. Recently I got a quite nice pair of in-ear headphones which block noise very well (with a very tight seal, not noise cancellation). The noise was a VERY loud buzzing/hissing/low groaning sound that I have never heard before. Among the possible causes are leaky refrigerant lines, an internal valve leak or a serious issue with your compressor. Make sure AC has to. There is a Technical Service bulletin for the AC noise, in some instances they replace the compressor, others just the serpentine belt. Last summer, my AC went warm. Now, even after adding more refrigerant, there is still no cold air, and we also get a constant hissing noise in the dash and rear hatch when the A/C button is on. " This type of noise from the compressor can indicate a dangerous situation. Take these air conditioning noises as a sign that you need to take action before the equipment suffers more serious problems. Noise coming from the AC system while compressor is ON. The expansion valve allows the cooled and liquified refrigerant to expand, becoming really cold, which then flows through the evaporator. Still another sign is a rattling noise coming from the air conditioning compressor located at the front lower right section of the engine bay. Cool Change Heating & Air Conditioning is a full service HVAC company committed to excellence. Most of the radiators heat up at close to the same time. But having your HVAC system breakdown in the heat of a Georgia summer is a worst-case scenario. Hopefully your CRV will become your trusted vehicle. And, as suspension systems have gotten more complex with many more points of potential failure, making thorough repairs means taking the necessary steps to get a good outcome. The sound I'm referring to is the irregular "ticking" noise you can hear over the idle noise. i usually hear. This is more prevalent after the adapter has been connected to AC power for a period of time. Get a new, high-efficiency system for one low monthly payment. Among the possible causes are leaky refrigerant lines, an internal valve leak or a serious issue with your compressor. You may also see puddles of liquid under your car in the morning which means something is leaking. If you need a bumper, we have exterior styling parts for that. The noise is audible from 3' away when the heat pump is cooling in marginal air conditioning weather. If you experience these symptoms, either together or separately, contact a mechanic as soon as possible to have your vacuum system looked at. Although this hissing noise, sounds like a bad noise, it’s actually a good air conditioning noise. This happens constantly while a sound is being played (music, alerts, etc. Problem: I ran our heat pump, air conditioner all night and it did great, but when I went outside this morning the unit was making this buzzing/humming sound. Let's take a closer look at when "hissing" is normal and when it's not. my e46 did it too, it drove me nuts, and was completely random some days it was there some days not, some days fairly quiet some days sounded like the ''birdies'' were having a full on fight. When I have the air on in my 99 grand caravan, it makes a hissing noise from the vents when I shut the engine off. Just blows warm air and makes hissing sound when ac is switched on. Had a major service last week and the air con re gassed as it didn't appear to be working at all (only just bought car). The gas system is very very very clean. Hissing HVAC Noise Descriptions & Recordings Hissing air conditioner or heat pump noise cause & repair. So, whatever noise that you are hearing in conjunction with the blower operation, is likely related to the blower motor assembly, not the compressor. Hissing/bubbling noise. We will not outline all of the reasons your AC unit may be hissing. The dealer said it was the drainage from the air conditioning unit on very hot and humid days. Dealer said "yeah, that is normal", and part of the condenser (?) that relieves built up pressure as the AC compressor cycles on and off. I went to look at buying a 2001 S60 and when the car was running a hissing noise like air was leaking under that dash by the pedals. The defrost and just vents running don't make any abnormal noise. The chattering noise is produced when a rat grinds his teeth together and can indicate both stress and relaxation, while squeaking and hissing convey fear, pain or alarm. If the sound does not increase with increased air or there is no sound at all then the blower motor will need to be replaced. A hissing noise coming from your HVAC system is not something to be neglected. Hey guys - I have a 2000 323i with 74k miles. If a refrigerant leak develops, you may hear a light hissing sound as the refrigerant flees through the leak. It started with intermittent hissing coming from the dash. If a refrigerant leak develops, you may hear a light hissing sound as the refrigerant leaves through the leak. HVAC air conditioner heat pump Hiss Hum Huff Howl Noise FAQs Diagnose Air Conditioner or heat pump Compressor or air handler hissing, huffing, humming Noises, Questions & answers about air conditioning or heat pump system equipment or control or ductwork noises: cause, significance, cure. It only happened on the coldest night when I was driving on the highway. At the first hissing noise, or the moment after you spot ice forming along the evaporator coil, call for professional air conditioning repair in Hammond, LA. The AC is on the wall to my left when I watch TV and sometimes (not all the time depending on who knows what) the right hear hiss gets crazy loud and annoying. BMW 3-Series E46 (1998 - 2005) - 00 3. It is a variable speed, so this allows the compressor to run entirely on its own. Or when the song is too silent I keep hearing that all the time, it annoys me so much. 25 thoughts on “ BMW E46 Heater Fan Not Working Correctly ” Robin 06/05/2012 at 6:29 pm. [Archive] AC whining/humming noise 2002 325xi E46 (1999 - 2006) Bimmerfest - BMW Forums > BMW Model Discussions > No hissing that I could hear of, just the. The noise from an air conditioning unit can have lots of causes depending on the type of unit. Hissing isn't a good sound in many situations, and this holds true for your air conditioner. There is an ond and off hissing sound from the center of the - Buick 2009 Enclave question. A/C blows hot air, and there was a hissing sound when A/C was pumping under the dash - Dodge 1999 Grand Caravan question. Dealer can't hear this noise so far. Although this hissing noise, sounds like a bad noise, it’s actually a good air conditioning noise. Then, when the AC turns off, the filter drops to the grille, making a slamming or thumping noise. The power steering pump, coolant pump and alternator are driven by one belt and a separate belt drives the AC compressor. Noise-induced hearing loss (NIHL) is hearing impairment resulting from exposure to loud sound. My 2000 Ody's AC (196K) miles has started to barely cool. If the sound continues, hire a heating and air conditioning professional to check it out. Recently what i have observed is that when i switch on the ac, there is a hissing noise heard from the passenger side ac vent. Communications II Lecture 5: Effects of Noise on FM Noise does not affect power of the message signal at the output (hissing noise in audiotape recording is also. What you are hearing if I read your note right is the two sides equalizing when the vehicle is shut off. If you hear a hissing sound near your gas lines, you might have a gas leak. Every once in a while I receive a call from a customer that is hearing a hissing noise coming from their air conditioner. Sounds like the compressor kicks in and the revs go up but no cold air just the same as without the aircon button lit up. Hissing present, air is warm. Hissing is the sound it makes to increase the pressure in the system, and as it gets lower and lower, the hissing will get more frequent. The compressor is indeed working properly. This hiss increased and decreased with acceleration and deceleration. I put my Civic away this evening & decided to check the washer bottle. Once I start driving the car the hissing goes away but I have a feeling it still hisses and I can't hear it. Scotty Kilmer, mechanic for the last 48 years, shows how to find car air conditioning refrigerant leaks quickly. There is an ond and off hissing sound from the center of the - Buick 2009 Enclave question. Is your car losing power? In most cases, a loss of engine power is related to a mechanical failure in your vehicle. 2002 BMW E46 318Ci weird resonating/rattling noise. It's not cooling, either. On my '01 E46 325iT the automatic air conditioning system will test itself periodically after shutting the engine off. Trans is shot. Obviously something isn't right with it, and I know I need to get it looked at. Over time, one or more of these screws could work their way loose, causing a vibration as refrigerant is cycled. I just replaced the brake pads a couple weeks ago but don't this has anything to do with it, but just in case I figured I should mention it. It started with intermittent hissing coming from the dash. this is the fourth bm i. While the sound of airflow is a necessary evil with a forced air-conditioner, there are some other sounds that are an indicator that something may be malfunctioning within the system. One of the first symptoms of a bad or failing smog pump is a rough running engine. Recently I got a quite nice pair of in-ear headphones which block noise very well (with a very tight seal, not noise cancellation). My 2005 m3 coupe has this air hissing noise inside car seems like it's coming from passenger side behind dashboard. For expert, NATE-certified technicians to handle your air conditioning repair in Trinity, FL, call Ierna’s Heating & Cooling. I only hear it when the vehicle comes to a stop. It's not cooling, either. I have tried several different PCs, all of which produce the same result. It changes along with the RPM of the engine and it seems to be the loudest at around 1500 rpm. IF you can get under the pedals with a flashlight as I did and take a look at the brake booster which is located behind the firewall, you will probably notice a tear in the rubber membrane which is likely the source of the hissing noise as the air that should not be escaping is indeed escaping. The high side is created by the AC compressor and the low side is created by an orifice tube. I have had it serviced twice, the first time the coils were cleaned and freon added. The A/C works great but I was curious if anyone else has had this issue? I found a couple of other threads with a similar issues but there wasn’t any real feedback. Anyone can help on - Hissing sound from air con vent - posted in General Car Discussion: Hi brosYesterday I discovered a hissing sound coming out from the air con vent in the center console of the car. Heat pump reversing valve If you have a heat pump instead of a straight AC, that hissing noise could be the reversing valve. I turned it off, and then back on again about 2 hours later. Refrigerant Leak. For the first 10 minutes there was cold air coming out of the vents. I have a 2009 rt avenger with 100,000 kms on it. A hissing noise could be a sign of the following AC problems: Duck leak; Bad expansion valve; Air filter that doesn’t fit correctly in its slot … but most likely, the hissing noise is a sign of a refrigerant leak. Now it's very faint, and comes and goes. Causes of an Air Conditioner’s Buzzing Noise. It makes a hissing sound when I turn it on which is the first sign that it is going down. It only happened on the coldest night when I was driving on the highway. If the sound does not increase with increased air or there is no sound at all then the blower motor will need to be replaced. Check this out and 140 other reviews from actual EcoSport [2013. Its not the air coming from the vents making the sound, but rather something "internal" behind the dash. Air conditioning is a luxury. So If you’re low on refrigerant, you know you have a leak. BMW E46 3 Series AC System Recharge DIY. Is there a way to filter this noise directly at the inverter pos & neg posts to avoid the battery cables from becoming antenna's?. I'm not sure I like it but have learned to live with it. This refers to the pressures in the system. I have tried several different PCs, all of which produce the same result. A refrigerant leak could be to blame for the low levels, and a hissing sound often accompanies it. Other signs include accelerator problems or an idling speed that is faster than it should be. The defrost and just vents running don't make any abnormal noise. Noise ends for the 1st time @00:11. You are probably familiar with the sounds your AC makes during normal operation, so when something like a grinding noise starts, it will stand out—as it should. You could try blowing it out with compressed air, just don't inhale any of the dust that comes out of course. Now the AC is not working and stopped blowing cool air. if you let the car idle and stand near it with the hood open u can hear a hissing, i always thought it was the air filter, but u stick ur head over the intake manifold u can clearly hear it coming from right near it. Is it related to the noise? It is a 2001 Toyota Camry that I bought new. Brief hissing sounds. Among the possible causes are leaky refrigerant lines, an internal valve leak or a serious issue with your compressor. One way to tell if your AC has a refrigerant leak vs. This may be the noise you are hearing. I've got an AC3 file which, when played, has a distinct hissing noise in the background.