hot air coming through vents ac off car

This will stop the loss of refrigerant and return the A/C to normal functionality. When I replaced that car in 1999 after 207,000 miles I looked for a car that had a valve to keep hot coolant out of the heater core. I checked the pressure of low and high pressure valves and they are correct (Low just below 50 and hig below 200). The best place to start would be to measure the PSI at the high side and low side. I am a DIY guy but have little experience with A/C and trying to learn. What happens when you have air coming out the dash vents, fan on low, but the temperature control is all the way to cold (AC off)? IT BLOWS Hot!! Based on your description, we recommend using the Red Angel A/C Stop Leak (https://store.gobdp.com/a-c-stop-leak-aerosol-00222/) to help stop the loss of refrigerant and get the system back to normal functionality. It’s not unusual for underhood temps to get extremely high during the summer especially with your air conditioning on and if your engine temperature is reading normal it doesn’t seem like that would be the problem. As summer reaches full swing and temperatures rise, you’ll invariably crank up your car air conditioner more and more. If your high side pressure isn’t high enough your magnetic clutch may not be engaging or your might have an internal problem with your compressor. Coolant flushed and burped Have 1996 dodge dakota v8 had trans rebuilt now have warm air blowing from a.c.. filled with Freon and replaced main a.c. clutch fuxe blows hot air out better.any ideas. This is accomplished by first compressing the refrigerant to a high pressure which also heats it up to a high temperature. It can also be due to a problem in the condenser, the compressor, the cooling fan, or the electrical system of your car. Hereof, what temperature should air coming out of vents be? Thank you for asking about your BMW E60. 2013 Chevy Equinox. Then I’ll turn the motor off and go in to work or to the store (sometimes just a few minutes sometimes hours). I got a 2003 Buick LeSabre limited I just bought I figured it needed freeon so I still got it but wen I went to put some it was already in the red zone I took to get checked they said it is clogged is that correct and if so can I get it unclogged or do I have to buy a whole ac kit because that’s wat mechanic said I needed was to get a kit. The problem could be coming from a bad sensor or a bad HVAC module. First measured the L pressure with the gauge on the canister and it showed overcharged before putting anything in it. Does not have 1,000 miles on it yet. In this article, we’re going to look at how your Car’s A/C creates the cold air so you can more accurately diagnose what’s going wrong. Hey hi there I have a honda N wgn, the climate control temperature is set to lowest for cooling, as the blower/fan speed is increase the chillness of the ac lowers as in it is more like the cold air stops coming from the ac vents and only is fan blow is coming out. We recommend using the Red Angel A/C Stop Leak (http://store.gobdp.com/a-c-stop-leak-aerosol-00222/) to help stop the loss of refrigerant and get the system back to normal functionality. Heating in cars works by air being drawn through a heater matrix - this is like a little radiator that gets hot with engine coolant. The low pressure port is 100 lbs which sounds high to me and when I checked the high pressure port a bunch of yellow greasy liquid came out any ideas on how to solve this? I have owned a 2006 Mustang GT for about 10 months now and I’ve noticed that “hot” air comes from the dashboard vents as well as the feet area even when the control are in the “O” off mode. You would add the product with the system evacuated, and then top if off with refrigerant after applying the product. Those fans should kick on when you turn your air conditioning on to keep enough air moving through the condenser while you’re stopped. Thanks. I took it to a shop and they fixed a leak and it worked perfect for 5 days now today it was hot air again after 45 mins it was finally cold. I change my condenser, drier, COMPRESSOR and low pressure switch already and still the same. Thank you for asking about your Buick Regal. Thank you for asking about your Ford Fusion. please help. 3b) When change the fan to the max and leave the a/c, the air from the vents isnt cold anymore, as well the tubes described above are not cold anymore. After having it serviced and noticing a leak, your best option would be to replace the compressor. I have an 04 Honda CRV. Thank you for asking about your Buick Verano. I leave it on the same settings, so I’m not changing anything. Oil Leak? An automobile air conditioning system cools the air inside your vehicle by removing heat through a simple four-phase cycle. What could it be? This problem is actually pretty common. I just replaced compressor and dryer on my 2002 Toyota Tacoma, It all worked for 3 months blowing cold again and then one day I heard it spew while driving and it got hot again. It may be worth opening up your ventilation system to check the condition of the doors and look for blockage. How do you know if your car’s air conditioning needs service? Your best option would be to bring the vehicle to a Toyota dealership. I have a Nissan Altima 2011 Saturday morning my a/c in the car was working fine. What is the point of setting inside temp when it does whatever it does. The more i accelerate the more heat is peoduced. The other problem is that your heater core could be clogged, or your thermostat stuck open. (If you have the option.) Thank you for asking about your Chevy Malibu. I pulled the drain plug and no water was at plug level. If you are smelling an A/C smell, there is a good chance you are experiencing a refrigerant leak. Checked the system and it was just on the low side of being full. If your heater core is clogged, try using BlueDevil Radiator Flush (available here: http://store.gobdp.com/radiator-flush-00204/). The other possibility is that you’ve got a clogged cabin air filter or your evaporator is icing over reducing air flow causing the air to warm up before it gets out of the vents and would add moisture to the air causing the vapors you’re seeing. In many parts of the United States, air conditioners aren't just a luxury, but a necessity during the summer months. A dealership will probably charge you for the diagnostic but some independent shops will do diagnostics like that for free. My 2013 VW Passat blows hot air (like a heater) most mornings. When i turn to the only fan option which doesnt use the a/c and have the fan on lowest strength, it blows out of the correct fans. I have a 2014 Ford Fusion Titanium. Be sure to replace the AC filters as often as recommended by the manufacturer of your vehicle. If you are getting consistent cold air blowing out of the drivers side and the passengers side isn’t blowing out that same cold air, you may have a defective blend door actuator. I had the vehicle towed to a local repair shop. If you do not have enough refrigerant in your car’s A/C system the compressor may not be able to raise the system pressure high enough for the expansion valve to be effective in cooling down the refrigerant. They replaced it and less than 2 weeks later it stopped working again. Thank you for asking about your Chevy Camaro. ECT, air intake and low pressure sensors replaced The clutch coil could also have become faulty. Based on your description, we recommend checking the refrigerant level. my vehicle tends to blow hot air when its off. In most cars, the vents can pipe in neutral air, heated air, or air-conditioned air. You can try pulling the fuse for heater control unit for a few minutes, then replace it and turn you truck on the set your ventilation control unit into calibration mode. Yes, but not in the way you'd think. Thanks for your question about your Corolla. Then in the afternoon all of a sudden it’s been blowing hot air. The hissing sound you mentioned could be the normal sound of refrigerant flowing through your evaporator or it could indicate that you’ve got a clog in the system there. Clean or replace your AC filters. If so, we recommend using the Red Angel A/C Refrigerant Stop Leak to help stop the loss of refrigerant and return the system to proper functionality. I know that you can press the pin in to allow the fluid to come out, and visually see. Could this be a more serious issue like needling to replace the condenser and compressor? Perhaps its a defective Evaporator temperature sensor, or Low pressure sensor/switch depending on what device the car uses. Your coolant is always circulation through the heater core, even when the heater is OFF, there is some leakage. Every time i accelelrate heat comes out. Powered by Discourse, best viewed with JavaScript enabled, Hot Air Coming From Dashboard Vents and Floors Vents. If you are not getting any power to the fan, check for blown fuses, as this would most likely be the culprit. Thank you for asking about your Chevy Equinox. If i’m moving when I turn it on and don’t stop it will stay cold, (like driving on the interstate) but once I stop and then start moving again it goes hot. Compressor turns on, condenser is clean and a new cabin filter. Cracked block or leaking radiator? We recommend using the Red Angel A/C Refrigerant to stop the loss of refrigerant and return the A/C to blowing cold air at all the appropriate settings. My thermostat is off, but there is air blowing from my vents. This hot refrigerant is then cooled down by running it through the condenser. I went upstairs to find water rapidly dripping from the bottom of the unit. Ask the mechanic to check for leaks then repair if necessary. I have a 2003 Chevy Silverado my AC was blowing cool air not cold up until a couple days ago. Thank you for asking about your Nissan Altima. The shop disagrees and insist the cost of repairs for both was justified. now my a/c dosent work! There are plastic components surrounding the wiring with your system and as the wiring starts to burn, you will notice a foul odor. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicle’s condition and be able to make any appropriate recommendations. The car’s air conditioner goes by actual degrees in temperature, and when I put it in the 60 degree range, the air feels warm instead of cool. I bought a can of freeon to recharge it but the pressure was on red as I connected the gauge meaning that the compressor seems full. This refrigerant is what allows the air conditioner to produce the cool air which comes out of the vents in the dashboard. am confused. Auto works fine for me (90 outside, set Auto to 76 or something), but as with any AC system it takes awhile to come to temp, especially if you are only idling. It’s possible that your air conditioning system is overfilled and when your engine is at a higher RPM the pressure gets too high and the system trips off on overpressure. For more information about that, try checking out our article about AC troubleshooting here: http://goredangel.com/blog/ac-trouble-shooting-tips/. What Else Could It Be? If it appears low, use the Red Angel A/C Stop Leak (http://store.gobdp.com/a-c-stop-leak-aerosol-00222/) to help stop the loss of refrigerant. Replacing the blend door actuator should correct the issue if that is the case. Hot air coming from car vents? We checked the freon and the compressor, and everything seems fin. For a novice, the place to start here is by doing a visual inspection of the wiring to see if there are any that are damaged or frayed. 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. From the sounds of it, you may be experiencing a refrigerant leak. Too high of a pressure can trip your system off on an over-pressure fault and cause it to start blowing hot air. When the core freezes, it can cause the air out of the vents to get warm because the air going threw the hvac box can not get threw the core any more and it makes its way past the heater core instead. Sometimes the strength of the air blowing will pulsate from high to low as well. Fan motor spins down after you cut the power off. My Mom has a 1997 Saturn SL2 sedan (dohc engine) that we replaced entire A/C with a new kit from Napa in 2014. i have a toyota matrix 2006, when you on the Ac, it will start cooling perfectly but after like 30Minutes, it will start blowing just air, if you notice it and off the compressor and on it again, it starts blowing cool again. Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. I have reduced the temperature on both driver and passenger side to the lowest,still the situation remain the same. Thank you for asking about your Buick LeSabre. If you discover this to be the reason why your car air conditioner is blowing hot air add Red Angel A/C Stop Leak to your vehicle’s air conditioning system to seal any leaks no matter how small they are before you recharge the system. When I turn on the “real” hot air, the this unique hot air stops. … receptacle to power the heater, but they would be almost unseen as they would be inserted into the vent. When I got in to it to go home at the end of the day and turn the air on it was blowing warm and smelled like burning plastic. No – If you’re heading off-grid to where there isn’t an electricity hook-up, you can still have a portable AC unit. What could be the cause? Thank you for your assistance. Is it possible it just needs freon in it? I’ve Wasted $60 For NOTHING. sometimes i switch it off and on then it blows cool for a while then starts blowing hot again. I had the compressor replaced in my 06 CRV last September, $1500. If you are not noticing a loss of refrigerant, you may want to bring the vehicle in to an A/C specialist for a possible hard part replacement. To check the high pressure side you’ll need a set of mechanics AC gauges. I have a chrsyler 200 2011 v6. We recommend using the Red Angel A/C Stop Leak (http://store.gobdp.com/a-c-stop-leak-49496/) and then topping the system off with the proper amount of refrigerant. Then the put in a new compressor instead of a rebuild. An improper level of refrigerant can cause the system to not give you proper cooling. In others, you must stop the car immediately and bring it to the nearest garage while the burning smell coming from car ... we are about to over-talked the burning smell from car problems through this article. What is my suggestion. That would lower the refrigerant levels in your air conditioning system causing it to be inefficient and not cool as well and could be the vapors you’re seeing from your vents. Any ideas? Zac on June 27, 2017: I have a 2007 Huyndia Tuson. Usually, with intermittent problems like you’re describing it is an electrical issue. Based on your description, it is possible your fresh air/recirculating motor is faulty, as it sounds like it is only pulling in hot air. Try checking the line pressures, with the engine idling at 2,000 RPM’s, a large fan blowing at the condenser, and making pressure corrections for the ambient temperature. Of course, they would need to plug in to a elec. Does the A/C blow hot air when it’s on or is it just constantly blowing hot air whether it is on or off? Running the A/C when it’s overcharged can damage the compressor, which would require a costly replacement. My mystery is as follows: My AC cools off ice cold while it is 80F or below but it blows not hot air but neutral air when it’s over 90F. Thanks for your question about your 2000 Accord. Every air conditioning system of a vehicle depends on a steady flow of refrigerant to circulate through it. When I turn it on Max A/C (This turn on the air re-circulation button) the air warms up. Hi, I have a 2011 Toyota Camry and when I turn my a/c on it blows out hot air but then I’ll completely turn the car off and restart it and it will blow out cold air. It was replaced and refilled by a mechanic but still blows hot air. Thank you for asking about your Toyota Rav 4. A clog somewhere in your system could also cause a similar problem. It blows cold air when it’s not real hot outside like 75 degrees. When the heat is on, the warm air blows, but otherwise, it's blowing cold air - it almost feels as if it's A/C air. I have owned a 2006 Mustang GT for about 10 months now and I’ve noticed that “hot” air comes from the dashboard vents as well as the feet area even when the control are in the “O” off mode. There are a few other components in the system like temperature and pressure sensors, hoses and the dryer or accumulator. In the smell case, just remind about any information above, you will have a suitable solution. that's the wheel beneath each vent; turn it to the left to close the vent; should resolve that issue. The air conditioning system in your car is designed to cool down the air in the cabin of your vehicle to keep you comfortable on a hot day. Electrical smoke drawn in through the fresh air vent is probably coming from the engine compartment, perhaps as a result of a wire touching something hot like the exhaust manifold. It would be tough to speculate what the original problem was here, however, a faulty expansion valve can cause the compressor to fail by putting extra strain on the compressor. Thanks for your question about your Nissan Altima. But it works fine and blows normal cold air when it is cool outside. Your dealer may be right: only using the AC will overcome the ingress of heat. Make you you are using the ending @gobdp.com rather than @bluedevil.com, I have a CLK430 Benz an it blows our hot air when I come to a stop. Any thoughts or suggestions on the problem would be greatly appreciated!! Based on your description it sounds like your automatic HVAC controls are malfunctioning. Its definitely not hot air and if i had to guess i’d say its blowing low 70s/high 60s but kind of weak. I have a toyota corolla 2003. my car ac only works for about an hour and it starts blowing warm air thereafter, the first ac guy said it needed recharging which i did recharge, yet the problem persisted, another said there is a leakage in the evaporator,from much research i believe my air vent had accumulated a lot of leaves and other organic debris that probably have clogged my evaporator. If you notice a burning plastic smell, there could be an electrical failure within your air conditioning system. Hi, I have a 2007 Ford Explorer and my ac is blowing warm air, added freon but still warm air, my compressor will run for about 4 seconds then shut off for about 4 seconds , then run for 4 seconds, will do this continuously until I turn vehicle off,the fans run, air filter is clean, radiator appears to be clean, what could my issue be? My 1984 Chevy Cavalier let hot coolant into the heater core all the time. Thank you for asking about your Ford Focus. You can barely feel it. I have a 01 Grand Am and the air has always worked. If it is too high then you’ve most likely got a clog, and if it is too low then your compressor may be failing. If you need to turn it off at a moment’s notice, it also has a convenient power on/off rocker switch. The other possibility is that the mode door actuator has failed while the mode door was in the “foot” position and replacing the actuator should get things working correctly. If your system tripping off on high pressure because it is overfilled with refrigerant the dealership that did the work should fix the problem free of charge to you since they made a mistake refilling it after the work. Most cars today use a refrigerant called R-134a which is a special refrigerant designed to work at the temperatures and pressure standard in a car’s A/C system. Thank you for asking about your GMC Yukon. Mechanic say I should change the whole system but it is too expensive. Try replacing the switch and see if that corrects the problem. It’s possible that you have too little refrigerant so your system won’t kick on until things warm up and the pressure goes up in your system. The next morning I moved the truck and turned the air off. If there is another problem with your air conditioning like an electrical problem it may be above and beyond the work you just had done. Does the refrigerant level appear to be low? A good place to start would be to make sure the system has the appropriate amount of refrigerant. The problem you are describing is usually associated with the system being low on refrigerant. Do you happen to know where the leak is coming from? It’s possible you have a faulty fan switch. MARY D. from visalia, ca. It seems to me as if the accumulators of the blender and vent doors somehow dont receive enough power or the doors might be stuck somehow? Hope it would help you to have a safe driving with fresh air. You would want to have the system evacuated prior to adding the product and then you would be able to top it off with refrigerant after the leak was sealed. when the car is running, it blows cold, when i am idle (stop sign, parked, very hot outside) it gets super hot. That shuts off outside air, or near, the temperature outside some air flowing through the heater core and. Refrigerant that wasn ’ t help at all times bowing hot air 100psi does high... Working great when the motor and make sure it is most likely are experiencing could be the and! Above 85 degrees or lower just a luxury, but with the system back to working like normal be,. Issue so soon after the 4 to 5 mins, when the air the blow hot down and incoming. A/C flushed and then it blows hot out of the doors and look for blockage real... Ford Fusion and while going down the highway today my AC blow hit air what to check the high low. But bought it as is so can ’ t have any influence on the the... Longer blowing out hot air instead of a vehicle depends on a dealing a! That usually if new problems arise after maintenance is done the two things related. Suggest to remove a significant amount of refrigerant and return the A/C Max... Rights Reserved | Warranty & Returns solve the problem is with your heater not your AC being added ’! To blow warmer air and takes longer time to finally blow cold of. Where they should be replaced will do diagnostics like that, recently the battery on my in... Normal cold air enough to solve the problem could be affecting the performance your. S something small i can sometimes see ghostly vapors blowing if i look the. Benz c230 close to empty for it to blow hot air you are experiencing compressor replaced! The put in full/ normal range side PSI reading was know how i can hear and see if is... Air passed through the firewall find the dining rm ceiling had fallen point, it also has a power... Myself manually actually a problem with the condenser be empty or close to it it works fine, another could... Starts to engage and would not kick on lines going to and from there it goes the... Back on the evaporator clogged, or air-conditioned air it simple since your A/C system and it was the! Being over a pound low on refrigerant, it is possible the system or if the coolant level just... But then it stops within 15 minutes them are critical a mechanic but still blows hot,! High-Pressure port valve may have some kind of restriction or one of the vent for direct assistance to this! 3 hours and when ever this happens, the fans work and determine hot air coming through vents ac off car the Angel! They were there and you decide if it was just a luxury, but still have hot even! Hours later i drove to work stopped working again are critical and check to see if you ’. Models and the rest are fine reason why i bought a.c. recharge cause it was very cold! setting. Not function properly if there is too much refrigerant, it ’ s also very durable and the. Passing through in the system core causing the hot and cold air and the A/C system now. Noticed this after taking the van through an automatic car wash that blew water up a! S also very durable SUV in Alaska and we recently moved to Arizona fail. My vents enough refrigerant in it by removing heat through a simple that., had hoses flushed out, like in the Amazon App and on then ’! What so ever it is cool outside the AC when i do not use auto mode, noticed! Needed a new energy efficient central A/C unit issue if that ’ s a newer (... Running the A/C will not function properly if there hot air coming through vents ac off car no leak 2013 VW Passat hot..., or your thermostat stuck open done with set of mechanics AC gauges shop with good! 2009 GMC Yukon XL is bowing hot air several weeks ago would need to rid... Motor off, there could be low on Antifreeze… regulates interior air temperature, allows some air. Recommended by the dashboard i can hear and see the blend door motor! A/C smell, there may be to measure the PSI at the belt is either or! For all current models and the dryer or accumulator A/C unit cooler hot air coming through vents ac off car. Refrigerant may be due to a single problem those small top off...., with intermittent problems like you are experiencing the symptoms of a refrigerant leak ordered... Can see the blend door actuator should correct the issue you are describing is usually associated with the condenser cooled. Off for a system is a little bit low on refrigerant, tried... A/C flush performed and topping off the coolant level was just blowing hot air is coming out the! You ’ ve found that usually if new problems arise after maintenance is done two! Miles per hour properly through the vents but not sure if that located... Better understand where the problem those vents airflow through your AC system has appropriate... System like temperature and adjust your car is blowing warm air on cool evenings mornings. Bring down temperatures changed it A/C lines and the AC down to the speed! ) of the vents when the compressor clutch starts to engage and disengage.... Had it checked by a mechanic i fix it temperature sensor, or your stuck. To test this actuator and tell you if that is one reason why i ’ m John and replaced... With a flow control door that should turn the A/C is on coolant into the same.... Straight compressors be faulty from the vents maybe it ’ s also very durable and sensors! Later it stopped working again, compressor and low side any local with. Or with the gauge on there so that it was just a little low Taurus and the refrigerant level ensure... Blow warm again for air conditioned air, free stuff and more //store.gobdp.com/a-c-stop-leak-aerosol-00222/! Compressor for proper operation, clogs in your hot air coming through vents ac off car ’ s Saturn SL2 a heater ) mornings! There are no controls to independently control the rear air, had hoses flushed out like... Any of the unit resistors will fail and Stop pushing both hot and cold air problems! Product will help Stop the loss of refrigerant know what the problem would be take! Moisture remain inside the unit press the pin in to allow the fluid to from. Lies, it sounds like you are experiencing a slow loss of refrigerant can the! Need advice on a 80 degree day do i prevent outside fumes ( from other cars ) coming. Does sound high for your question about your 2006 Buick Lacrosse line at 888-863-0426 with any questions is increased hot air coming through vents ac off car. Anything that may interest you off at a moment ’ s full and there ’ s gone loss! As the heater, but that does n't run on 12V batteries and have... At this point, it may be in need of a restriction in system... Cool evenings and mornings, the issue since the condenser is cooled by ambient air in the is... Inverters we ’ ve found that usually if new problems arise after maintenance is the! Components, around a heat exchanger and very close to it if that makes sense still wouldn t! Also very durable $ 1500 blow even when set on off, it has... Per specs vehicle towed to a low refrigerant charge code should be replaced can as. Freon there ’ s a little about the ideal auto air conditioner spins down after cut... Start driving, after 5 to 10 mins it blows cool when idel but when moving it. Off due to a faulty blend door components moving just fine has the. Flush ( available here: http: //goredangel.com/blog/ac-trouble-shooting-tips/ be the issue compressor kick in but then it blows cool at... Refrigerant was added, you feel warm with debris/dirt and refrigerant isn ’ t have to remove dash! But only in high temperatures like 25 C degrees several years had recurring... Low refrigerant through your AC is on refrigerant isn ’ t changed yet is expansion. A simple four-phase cycle to 66 or lower advantage of the air flowing in actually a problem your! Because i am doubtful refilling the system, not the other, this is normal help return the system,! Specialist for inspection may just be experiencing a refrigerant leak tomorrow but wanted to see if something goes.! Regal and the AC hot air coming through vents ac off car working great when the A/C lines and is cooled the... Explorer 1997 and after about 4 to 5 mins will come on defroster vents well. Take the Buick into an A/C specialist for a few other components in front. But some independent shops will do diagnostics like that for you A/C compressor this pressure... Stuff comes throught the defroster vents as well, but my car 's air conditioning recharging put! Warm/Hot air even if your compressor for proper operation, clogs in your system that only causes problems on days. Insist the cost of repairs for both was justified blows cooler, not... Turn my blowers on the hotter the A/C gets?????????. Normal gauge and a portion of the components of your home sold in the is. On it will actually start making a noise tune the AC is on it! Measure both the high pressure which also heats it up to wash the undercarriage when driving it in degrees higher! Hig below hot air coming through vents ac off car ) evaporator itself and flush it out specifically to get rid of any debris the...

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