Car Ac Blows Cold Air When Idle And Warm Air When Moving

The unit also runs for days at a time without ever shutting off, thus causing my electric meter to be moving very fast, and running up my electric bill. Blowing Warm Air When it is working properly, your cars' air conditioner is a wonderful thing. Do you have the air recirculating on or off or does it not matter? I have noticed that without the recirculate on when sitting at a light the air will not blow out as warm as when the truck is moving and its a pretty big temp difference. A ride can be even more uncomfortable if you are stuck in traffic. Take a minute to review my page about automotive air conditioning safety. When I start the car with A/C "on" and I let the climate control do it's thing - the A/C really doesn't do anything but blow air as the car idles in the garage. AC felt frigid but after a day of. I believe the problem is that the Radiator Fan does not turn on when I turn the AC on. It blows cold air while idling but hot air while driving. This is a 2003 Escape with 130k miles. I have had it recharged twice and they say they don't see any leaks, but it will blow cold air for a couple of weeks after the charge, then slowly die and start to blow warm air. When I drive the car, and get it moving 30 mph or so, the high side reading drops to under 100 psi, along with the loss of cool air. This causes the idling speed of the engine to change as needed. https://www. I noticed one vent is not blowing as much air as the other ones. After you shut the car off over night (or long period time) the air will work again and then 20 to 40 minutes into the drive it will start blowing hot on the passenger side and the driver's side is not as cool as it should be. When I stop at an intersection or get stuck in stop and go traffic, it just blows warm. Taking it to the dealer tomorrow. Not cold air but more like room temp air, then as soon as get moving again it warms back up. I know one of the first things I do on cold winter mornings before heading out is starting my car and turning the heat on. Whenever car is on and parked, not moving, or going slower than 20 mph, the air conditioning does not cool and blows extremely hot air into the car. 2010 Ford Edge. You may be wondering “why is my air conditioner so loud?” Air conditioners make noise because they are large machines with a lot of moving parts that work hard to keep your home at a comfortable temperature. If anyone has any advice on what do do I would be grateful. Find the procedure in a shop manual (at auto parts stores for about $20). My air conditioning in my 2012 Kia Optima EX GDI non turbo runs fine while driving at higher speeds but at a stop light, stuck in traffic at low speeds it only blows warm or hot air. Re: heaters blowing nothing but cold air and motor overheating Sign In There was no shop it was a gas station in the middle of the night and all we did was put some more coolant in the reservoir. : Ever notice on all cars there is a temperature setting? What this does is control the on time for the AC compressor and also the flow of hot engine coolant into the heater core located in the dash. This is shortly after having the system recharged, so I assume the 134A and what not is proper. If the level is very low, then check the water pump for leaking after you refill the radiator. We bought it new in 2008 and have had an AC problem pretty much since the beginning. Dont forget, it's Air Conditioning, not Air cooling. At idle, Ac light blinks and blows hot. However, if noise from your AC unit has reached new decibels, it could be the first sign of a serious issue. Now, for the feeling of warm air at idle, if your car has a sight glass on the receiver/ dryer assembly or the small AC hose. I have a 2003 Tahoe - manual HVAC system. I am having the same problem, the dealer had my flex for 4 days, they did the TSB stuff, the thermostat, still blowing cold air at idle after the car has heated up, returned again and finally flushed all of the coolant system, apparently there were bubbles, now it seems to be working I have heat once the car is warm at idle and while moving. Your car's air conditioning (A/C) system is divided into two sides, known as the high side and the low side. I have dual control air. When I stay stationary, or stop at red lights, the AC blows out hot air. I started the car and idled in the driveway for 10 minutes, letting it warm up to operating temp, and it was blowing warm air. also depends how hot it is outside and if your car was sitting in the sun all day (and all the ducting and ac parts are hot). If so would this be a problem with the car or normal due to the ac setting being a temperature rather then just a setting. I picked up a cigarette lighter volt meter from Walmart in the automotive area and put that in the car. i don't know much about engines, was hoping to get advicewhen sitting in traffic or car just idle, it seems the a/c compressor doesn't run, warm air. When the AC is on (both Max AC and normal) it gets nice and ice cold while moving, even at side street speeds it's fine. thanks a bunch. Then had the same problem again blowing warm air when parked or at stop lights & signs. -My 02' GT will only blow cold air at high RPM's (around 3800). If air isn't moving through the condenser in front of the radiator, then it won't blow cold air in the vehicle. Well, i thought last time i checked it was working a few months ago but recently my heater core went and i bypass it for right now and now i just tried my a/c cuz its so hot in NY where i live right now and it only blows hot air, not getting cold at all. The blending of the hot air with the AC air seems to lag the setting quite a bit. The new fan solved both problems and its very refreshing to have cold air again! Few notes on my 2009. Ac blows cold when moving. Is it normal if idling on a very hot day that the AC blows luke-cold air (not really, really cold). I show in this video what was causing the problem and how I fixed it on my 2005 Hyundai Santa Fe. If that don't work then try the other suggestions. when stopped, its start blowing hot air. The air seems somewhat humid coming out. The heat from the hot coolant is what your heater normally blows throughout the inside of the car. The unit also runs for days at a time without ever shutting off, thus causing my electric meter to be moving very fast, and running up my electric bill. Simple Tip to Improve a Car's Air Conditioning Performance. When car sits still for a few minutes, recirculation light goes out, and AC light starts blinking. Answer: As with any problem of A/C not blowing cold enough, the first thing is to make sure the freon charge is. AC blows cold, then hot, then cold Blazer Car Forums A/C now turns on but will blow cold air for 5 seconds then back to hot for the same. It's a pretty common issue with Hondas, and easy to replace either the fan motor or the whole unit. We test A/C Pro's claim that it can have your car's worn-out air conditioner blowing cold in just 10 minutes. So next time that your air conditioner compressor rapidly turns on and off in your car, it may not be due to low freon levels –. This bubbling is normal if you have air trapped in your system, and is caused by the air escaping as it reaches the area of the open radiator cap. Today i had it regassed then all the vents are now not blowing any hot air. the problem occurs at all fan (low, high, etc) and. Sometimes people think it's not blowing cold air when it is, and it is just that it is hot outside. The fact it comes back on at idle shows it had a bad sensor or controller or bubble in coolant. AC blows warm at idle - F150 AC blows warm at idle - F150. When you put all the way to hot-cold-hot again, the solenoid can get loose and start working again for a while. However, if the coil gets too cold, the condensation on it will freeze, turning the coil into a big block of ice. Cooling fans would slow and not draw enough air across the condenser and therefore the cooling inside the car would. If the weather is around 80 degrees, the AC works fine at any speed, but once the outside temperature goes over 85, if I drive at 50 mph or faster, the AC blows ice-cold air and if I'm driving slowly in traffic, the AC air temp slowly gets warmer and warmer. com : Car complaints, car problems and defect information. Air conditioning is a field in it's own right, but we'll stick to the main points or a car's air conditioning and the main parts used and a few hints to keep the air-con system running properly. On hot days, the a/c works fine and blows cool air for about half an hour, then it just blows warm air. Yea but for me its anytime the car is at idle. Most fans do not pull enough air at idle to cool air enough to keep your car cool as it did when we used Freon. A/C does not blow cold air on idle, only when car is in motion. Also, I set the climate control to automatic and the block heater is plugged in. All original parts. Hi Kanboy - there might be a simple fix to this. Nothing feels better than feeling the cold air blowing in your car on a hot day, practically a necessity, it is one of the most important parts of any car: a working air conditioner. It is pretty easy to deal with yourself as long as you haven't developed a bad leak. Incoming search terms: Car Blows Cold Air When Stopped,Car Heater Blows Cold Air When Stopped,Car Heat Turns Cold When Stopped,Cold Air When Stopped Hot When Dricing,Car A/c Only Blows Hard When Stopped,Chevy Sonic Heats Only When Driving,Car Blowing Cold Air When Stopped And Heat When Driving,What Causes The Car Heater To Blow Cold Air When. When my car ('04 Suzuki Aerio) is idle, the compressor cuts off and the AC blows hot. I get cold AC but its only when the truck is moving - if I come to a stop light, it starts blowing warm air at me. Cold Air Blows Intermittently. Average repair cost is $150 at 51,000 miles. So this was my first summer with this truck. Does anyone have any issues with their ac not blowing cold air when their truck is at a stop. Temp is at Max and it will go away after driving again after a few minutes. While there are many, many reasons your air conditioner is blowing hot air, we'll run through the most common causes that you can fix or diagnose on your own. Because the working fluid gets both very hot and very cold, it is important to keep moisture out of the system, as ice forming in the compressor can damage it. If you have ever used a can of compressed air to clean computer components, you will know that the bottle gets very cold in a short amount of time. doesn't generate a strong air flow into the AC. Air blows hard just not cold enough. Here are four of the most common:. after some days, my car was full with 5 to 6 people. : Ever notice on all cars there is a temperature setting? What this does is control the on time for the AC compressor and also the flow of hot engine coolant into the heater core located in the dash. When I drive the car, and get up to 30 mph or so, the vent air temp goes up, and after a few minutes of driving, the vent air is barely cold. Today it overheated and put key in on position to see if fans where kicking on while truck over the recommended temp and did not see fans come on. The fact it comes back on at idle shows it had a bad sensor or controller or bubble in coolant. Or worse yet, you come out to start the car one day, turn on the AC and it's blowing barely cold air when it was fine just yesterday. Auto Air Conditioner Blowing Warm Air, Not Cooling. Got out of highway, and in city speeds, warmish air re-appeared. If the heater is working fine, both these hoses will be hot to the touch. Schedule an appointment online or stop by your nearest location today!. Gather the right tools. Recently replaced the cabin air filterstill didn't fix the problem. This was the exact problem which i faced in my Skoda. i checked all fluids and they are full and also changed heater contol. I needed to remove my entire air filter box and the wire harness that goes into the fan had a flap on the side closest to the fan that you have to press to remove it. If your car's air conditioner stops working on a hot day, then the ride to your destination can be quite uncomfortable. When I stay stationary, or stop at red lights, the AC blows out hot air. The AC on my 2008 2. 2010 Ford Edge. In fact the loss of heat through the vents may be noticed first, before any overheat problems with the engine occur. Then once I start moving, it cools off again. BUT during the day when it is hot, when I start my car or idle at a light, the ac blows warm air. I tried all combinations of fresh and recirculating, max cold and high fan, max cold and auto, 69 degrees and auto. You’ll need to make sure the air/fuel ratio is maintained during cold start. Currently the car is idle as the thing now refuses to blow anything but full hot while the display reads: "Max A/C". If I stop it. Air then blows thourgh the evaportator which makes it get cold. Not sure if it's R12 or R134, I'm leaning towards R12 cause when it's moving it blows pretty cold air, other cars I've had that were switched from R12 to R134 never blew air this cold, but that doesn't mean much. I was cruising at about 65 MPH, Outside temp is 105. I have an 04 fx4 screw that blows ice cold air at idle and while moving. I put some Freon in the line and it blew cold air for about a week. its normal, my car did it since day 1. I have the same issue as mcebbie. This also applies to the AC in the summer. Auto Body problems : Auto Body collision damage (minor). Given that the air velocity is reduced to zero without losses the pressure increase can be calculated accordingly. Well, i thought last time i checked it was working a few months ago but recently my heater core went and i bypass it for right now and now i just tried my a/c cuz its so hot in NY where i live right now and it only blows hot air, not getting cold at all. TROUBLESHOOTING AIR CONDITIONER SYSTEM Step by Step. sitting idle…. I know the Rad Fan works because it turns on when the engine heats up just like it should. At idle, Ac light blinks and blows hot. When car is moving, AC blows very cold. I think I may be having the same issue and I'm going to take a look at my fan clutch after work. Then rather quickly is stops blowing any cold air and just pushes around ambient temp air. Ford has issued a service bulletin 07-24-7 to address an AC blows warm at idle issue on 2007-2008 F-150, F-150 and 2007-2008 Lincoln Mark LT vehicles with the 4. outside the AC will blow hot air for a couple minutes after the SUV is started and running. If air isn't moving through the condenser in front of the radiator, then it won't blow cold air in the vehicle. If I rev the engine and hold it at 2000 to 2500 rpm, the air gets colder. My air conditioning in my 2012 Kia Optima EX GDI non turbo runs fine while driving at higher speeds but at a stop light, stuck in traffic at low speeds it only blows warm or hot air. The moment I stop at a light or something, I notice it starts to get warmer. Left the car for about an hour and a half,. With recirculating the air and the outside temperature around 80 degrees, the car was putting out about 44 degree air from the A/C vents. A short while later we realized her side was blowing really hot air, while mine was ice cold. Air conditioner will intermittently start blowing hot air on passenger side. 7 liter when car warms up we turn the heater on and it blows warm air and then just minutes later it will go cold and a short time later it will get warm again. When it sticks, it cannot control the idle of the car--it might make the car idle at a very high RPM or, in most cases, make the car stall at a low RPM. When the ac stops blowing cold at idle, the most common reason is not enough air flowing thru the radiator, or the radiator fan is not running and the only air flow is when the vehicle is moving. I saw battery voltages as low as 9. The unit also runs for days at a time without ever shutting off, thus causing my electric meter to be moving very fast, and running up my electric bill. The air coming out the vents goes cold almost immediately. Re: AC cold then blows warm, gets cold again -- on and on The kits they sell normally only measure on the low side and the gauge tells you what is the proper reading. The new fan solved both problems and its very refreshing to have cold air again! Few notes on my 2009. Then when moving, the air does get much, much colder? I observed this yesterday and originally thought the AC repair was incomplete, but once moving, the AC did get cold. The refrigerant in gas form then enters the compressor, where it is pressurized and the whole process starts all over again. Air conditioning systems work by moving heat from inside your home to the outside. Air gets a bit cooler when driving (RPM's above idle), but not cold like it used to. When the AC is on (both Max AC and normal) it gets nice and ice cold while moving, even at side street speeds it's fine. The leak may be found in the evaporator, condenser or hose in which case you should bring your car to a mechanic to be repaired. On hot days, the AC is nice and cold when at highway speeds, engine temp runs normal. I think I may be having the same issue and I'm going to take a look at my fan clutch after work. If the weather is around 80 degrees, the AC works fine at any speed, but once the outside temperature goes over 85, if I drive at 50 mph or faster, the AC blows ice-cold air and if I'm driving slowly in traffic, the AC air temp slowly gets warmer and warmer. A/C not working, blowing warm air when car is idle I noticed a problem with the A/C on my 99' 328i few days ago, when the A/C is switched on, it blows warm air while the car is stand still, and as soon as I step on the gas paddle and get the car going, it blows cold air. Heater blows cold air when at idle but heats up when moving? It's blows cold air when at idle even when the car engine heats up. I have a 1989 coupe. This November i would have this truck a year. Going from cold to the heat outside doesn’t pose the same issues, since even more blood flows to our nose and throat during that process, making the white blood cells plentiful. It was a simple fix. I have a 2006 with 230,000 miles on it. Any input would be great. The heater is nice and warm except when I stop and the engine RPM is less then 1K, cold air blows ou 2006 Xterra- Heater blows cold air at idle - Nissanhelp. Took it in and they said it was the compressor. However when coming to a traffic stop or other non-moving situation warm then hot air blows out the vents. If anyone has any advice on what do do I would be grateful. As the car is sitting @ idle without moving it does not have as much air to run through the compartment to cool it down (as it does while driving). Ford has issued a service bulletin 07-24-7 to address an AC blows warm at idle issue on 2007-2008 F-150, F-150 and 2007-2008 Lincoln Mark LT vehicles with the 4. Before you start troubleshooting the AC, you'll want to make sure that the outside temperature is above forty degrees. I have a 2005 Ody LX with 39k miles that I just purchased used about a month ago. When it is not, which of course occurs on the most brutally hot day of the year, the A/C suddenly becomes a cruel joke, blowing warm, stale air into your vehicle. I get cold AC but its only when the truck is moving - if I come to a stop light, it starts blowing warm air at me. 2010 Ford Edge. Then again, I only do that in the summer. A/C starts off cold then blows warm Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. I found that when i'm parked and waiting for someone I have to keep the rpm at 1000 or 1500 (at idle its at 500) for it to start to blow hot air. It's a few months after the fact but this past summer I was waiting in a Target parking lot with my car running while my wife ran in to get something. Then rather quickly is stops blowing any cold air and just pushes around ambient temp air. I show in this video what was causing the problem and how I fixed it on my 2005 Hyundai Santa Fe. Recirculation works as normal. Start the vehicle and turn the A/C control up to the coldest setting. Think of a house fan, the fast the wind blows on you, the cooler it gets Thus, it could be an illusion that the AC is working when car is in motion, when it really isn't. So I took that radiator fan and put it on the car, and just hooked up a very simple on/off switch to the fan and put that switch on my dash. The other ac pipe is hot to touch coming out of evaporator. so the air conditioning. Car Air-conditioning Compressor. initially, when car is in sunlight for 3 to 4 hours, and outside temperature is 40 degrees C, car AC take too long to cool car, but when car starts moving, AC works fine sometimes it was extra cold, but only when car is moving. heater blows cold air when at idle even when temp is at normal? 31 Answers. When I go on the expressway and am moving with my foot on the gas, it blows out ice cold air. The A/C only seems to blow cold while the car is moving. It is pretty easy to deal with yourself as long as you haven't developed a bad leak. BOTH have a problem when it was HOT outside the AC would not turn on immediatley. Initially AC blows a bit cold air on the passenger side and hot on drivers side. It'll be blowing cold and then suddenly drive itself to full hot, and usually this is accompanied by a flickering of the display. The Causes Why Car AC not Blowing Cold Air When Idle? The problem occurs at most cars at some point in their lifetime. slightly cold air at idle, then gets colder when car is moving. This is the reason that it takes a while for heaters to start blowing warm air. Especially during hot humid summer days. Answer: As with any problem of A/C not blowing cold enough, the first thing is to make sure the freon charge is. Heater blows warm for maybe a few minutes, then blows nothing but cold air. We had a radiator replaced over the summer the air works fine but now even if we let our car warm up and drive it all day the heat never blows out hot it's always cold the other day I noticed when the heat was completely turned off but it was on defrost and it was blowing a little warm but as soon as I turn the heat on it got cold again I'm. Heat pump blows cool air,then warm air, then cool air again My heat pump comes on, blows cool air, then hot air, then back to cool air again. Went and picked it up still blows warm at idle and now there is a whining noise. Runs ok for a few days with no coolant leaks and sometimes blowing hot air out of ac when idle position but cold when we get moving. I need help finding why my car's air conditioning (2011 Ford Mustang v6) is only blowing cold air at idling and not while driving on the highway when it's 100°F here in Nashville. A short while later we realized her side was blowing really hot air, while mine was ice cold. A/C blows cold @idle, hot while driving. There are two components of this question, first is about the AC air temp and the second is the temp under the hood. Is your ML blowing hot air even though you have the AC on cold setting? A common problem with the ML320 / ML430 is the AC getting stuck on Hot or Cold setting. I found that when i'm parked and waiting for someone I have to keep the rpm at 1000 or 1500 (at idle its at 500) for it to start to blow hot air. When a car's AC blows out air with sporadic temperatures, it's often likely that moisture is building up in one of the hoses or assemblies, causing ice to accumulate and clog. Cruising on the HWY at about 70 MPH. How to Troubleshoot the Air Conditioning on a Toyota Tercel. AC blows cold when truck moving, warm when idle I turned it on and noticed it was blowing cold air so to be honest I didn't pay attention until yesterday when we. Check if the AC Radiator fan has conked off. If your car has no heat, not only would the inside of your car feel like an ice box, but a broken heater can prevent your defroster from blowing warm air to your windshield to eliminate ice and fog, which can. 2006 Lexus RX 330. But if your car is blowing hot air out at idle with the AC off, Then how is it supposed to blow out cold air WITH the AC Street and Remote tuning available - PM me I don't understand the fascination with dragging your front lips on the floor and having stupid camber. This issue has been happening since it's been warm enough to notice the need for AC. Recently it has stopped blowing cold air when idle. We have a 2008 CRV EX with 92,000 miles. 5k rpm and above for a while, the aircon will blow some "vapour" out which is quite cool. Warm Air From GMC Sierra Vents With A/C On. Now the AC may be blowing cold air, but until the hot air in the car is replaced, the car will still be hot, and that can take a few minutes. Car issues can make people scratch their heads. Start by checking the coolant level when the engine is totally cold, and fill it if it's low. One note while it is easy to do without having to think about it in t. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos. It will be set to 71 and will be reading 76. Incoming search terms: Car Blows Cold Air When Stopped,Car Heater Blows Cold Air When Stopped,Car Heat Turns Cold When Stopped,Cold Air When Stopped Hot When Dricing,Car A/c Only Blows Hard When Stopped,Chevy Sonic Heats Only When Driving,Car Blowing Cold Air When Stopped And Heat When Driving,What Causes The Car Heater To Blow Cold Air When. A/C not working, blowing warm air when car is idle I noticed a problem with the A/C on my 99' 328i few days ago, when the A/C is switched on, it blows warm air while the car is stand still, and as soon as I step on the gas paddle and get the car going, it blows cold air. I found that when i'm parked and waiting for someone I have to keep the rpm at 1000 or 1500 (at idle its at 500) for it to start to blow hot air. Never had problem with A/C until now. I would have to disagree. I read some other posts about an evaporator temperature sensor, but I am not sure what that is. When I turned the switch back to cold and turned A/C on, still hot air was blowing out of vents. there are times when the car is at a idle it will blow cold and when you rev it up it will get warm again. The top and bottom hoses are hot and the radiator gets hot. Start driving and A/C begins to blow warm air. sitting idle…. My car is blowing cold air one day, then hot air the next I have been driving my 2006 Honda accord SE for 3 months and my AC is blowing cold air one day, then blowing hot air the next day. Both of the hoses should be warm to the touch but one should be noticeably cooler. Occassional hissing noise other have metnioned; Similar experience in the past with this car and the dealer recharged the system under the B2B warranty. Does your buddies suv have electric by any chance ?. Sometimes the heater will only blow warm when driving and blow cold at idle. The temperature gauge stays right in the middle like always. re: heater in my car blows warm while moving but blows cold Posted by Prolate Spheroid on 12/3/10 at 10:05 am to meauxjeaux2 quote: Or that the harmonic balancer in his air unit is knocking off center. We had a radiator replaced over the summer the air works fine but now even if we let our car warm up and drive it all day the heat never blows out hot it's always cold the other day I noticed when the heat was completely turned off but it was on defrost and it was blowing a little warm but as soon as I turn the heat on it got cold again I'm. When you put all the way to hot-cold-hot again, the solenoid can get loose and start working again for a while. hi guys, ok on my last thread i was having an issue with my car surging while the a/c was on even if i was driving it would jerk and suge while going down the road but it blew cold at idle and while driving anyway yesterday i recharged it with a small can of r134a and was excited because the surging and jerking stopped while driving and it blows cold but then today i noticed that now it blows. Heater blows cold air when at idle but heats up when moving? It's blows cold air when at idle even when the car engine heats up. Not cold air but more like room temp air, then as soon as get moving again it warms back up. Auto Air Conditioner Blowing Warm Air, Not Cooling. The cold air returns shortly, and the cycle repeats itself for as long as you are driving. Now, for the feeling of warm air at idle, if your car has a sight glass on the receiver/ dryer assembly or the small AC hose. Your car's air conditioning (A/C) system is divided into two sides, known as the high side and the low side. Especially during hot humid summer days. Auto Tech A/C Pro recharge kit: A DIY fix for aging car air conditioners. Then when moving, the air does get much, much colder? I observed this yesterday and originally thought the AC repair was incomplete, but once moving, the AC did get cold. re: heater in my car blows warm while moving but blows cold Posted by Prolate Spheroid on 12/3/10 at 10:05 am to meauxjeaux2 quote: Or that the harmonic balancer in his air unit is knocking off center. Not cold air but more like room temp air, then as soon as get moving again it warms back up. Cleaning an idle air-control valve can keep you from buying a new part, but only certain idle air-control valves can be cleaned. The gas moves out of the evaporator -- and out of the passenger compartment of the car, taking the heat with it. Auto Body problems : Auto Body collision damage (minor). Feeling a bit frustrated? We know the feeling. It was over charged a bit at one point, but no longer. Truck idles at about 500 rpm so maybe that is not enough to get compressor going. This is caused by the blend motor flap getting stuck and no longer moving when you rotate the AC knob between Hot and Cold. ac warm at low idle when vehicle isn't moving is not abnormal in some cases. When I drive the car, and get up to 30 mph or so, the vent air temp goes up, and after a few minutes of driving, the vent air is barely cold. The compressor of the AC system moves heat from the radiator to the condenser. If I give it a tiny bit of gas and bring the idle up a bit to 1200 rpm, the air becomes hot again. My car will still blow hot air out. When I drive off, it starts cooling. A heater blowing cold air could be a result of a leak in your ducting. Recently it has stopped blowing cold air when idle. When it's cooler outside it seems to work fine however add humidity and heat and it's uncomfortable. Start by checking the coolant level when the engine is totally cold, and fill it if it's low. Here is why your Ford F-150 or Super Duty's vent is only blowing hot or cold air. i don't know much about engines, was hoping to get advicewhen sitting in traffic or car just idle, it seems the a/c compressor doesn't run, warm air. When I drive over 40ish mph, my ac blows cold air. The ac was blowing well on all air speeds. Sometimes people think it's not blowing cold air when it is, and it is just that it is hot outside. Usually when your A/C works fine while moving but gets warm when stationary, the likely cause is the condenser fan is not working. No heat till Im driving on the highway. If the weather is around 80 degrees, the AC works fine at any speed, but once the outside temperature goes over 85, if I drive at 50 mph or faster, the AC blows ice-cold air and if I'm driving slowly in traffic, the AC air temp slowly gets warmer and warmer. Can any one tell me what might be going on ?The temperature guage on the dash is normal and the car has normal heat while moving But not when i stop at a light or at a stop sign!. when it does, no cold air blows. There are several reasons that may explain why your air conditioning system is blowing warm instead of cool air. I think I may be having the same issue and I'm going to take a look at my fan clutch after work. Also see one of the best simplified diagrams for automotive air conditioning. It starts blowing cold air again after we have accelerated and keeps blowing cold air while we don't stop. This allows your car to regulate just how cold the blowing air gets. The high and low side gauge readings are normal, around 300/35 psi. Get an instant quote for your car Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. The problem is that when im driving it blows hot air but when im stopped at a light it blows cold. When car sits still for a few minutes, recirculation light goes out, and AC light starts blinking. So AC was crankin When I'm moving it's cold as hell When I stop it blows warm. Once entered the highway and hit high speed, it started giving cold air again. I have checked the fuses/relays. Sometimes low coolant, even if it’s just a little low, will make the heater blow cold air out the vents. Do you have the air recirculating on or off or does it not matter? I have noticed that without the recirculate on when sitting at a light the air will not blow out as warm as when the truck is moving and its a pretty big temp difference. Ever had problems with your car about air conditioner, or AC, not blowing cold air when the car is at stop? This happens in most cars when the AC system of your car does not have properly maintenance and it definitely makes you irritated to stay in the car on a hot day with no cool AC. AC Blows Hot Air After Recharge I have a 2006 4Runner V6 and the AC blows hot air. It's a few months after the fact but this past summer I was waiting in a Target parking lot with my car running while my wife ran in to get something. Many cars are equipped with two radiator fans, while others have one fan that can run at different speeds. I am having the same problem, the dealer had my flex for 4 days, they did the TSB stuff, the thermostat, still blowing cold air at idle after the car has heated up, returned again and finally flushed all of the coolant system, apparently there were bubbles, now it seems to be working I have heat once the car is warm at idle and while moving. The tech concluded that the compressor is 99% faulty because he's saying that even when he push the gas pedal, the high pressure is barely moving. Does your buddies suv have electric by any chance ?. Never had problem with A/C until now. When i turn the heater or the AC on, the high idle sound goes away. and it is not warm in the car. The heater is nice and warm except when I stop and the engine RPM is less then 1K, cold air blows ou 2006 Xterra- Heater blows cold air at idle - Nissanhelp. Hey guys, I'm experiencing a problem with my car. Took to local dea. 3L and I'm having warm air blow when I'm at idle and when I'm driving I have my A/C set to 60 degrees (lowest it'll go) and it's cold, but not nearly as cold as it used to be. Why is my car air conditioner not blowing cold air Maybe it is, but it is scorching outside so it doesn't seem as cold as you would like it. Too Hot NEW by: Anonymous My air continuously blows and is not getting my house cold en0ough. car getting hot at idle. When it's cooler outside it seems to work fine however add humidity and heat and it's uncomfortable. If it is running hot or above normal, then check the coolant level. What's wrong with your car?. Something is usually preventing hot antifreeze from circulating through the heater core. When I get on the freeway it cools ok…. Now the AC may be blowing cold air, but until the hot air in the car is replaced, the car will still be hot, and that can take a few minutes. I picked it up drove it for 45 minutes and it was cold. Diagnosing the reason that your air conditioning isn't working will help you determine whether the problem is one that you can fix yourself or if you need to take it to a repair shop. If the weather is around 80 degrees, the AC works fine at any speed, but once the outside temperature goes over 85, if I drive at 50 mph or faster, the AC blows ice-cold air and if I'm driving slowly in traffic, the AC air temp slowly gets warmer and warmer. Another common reason for car AC not blowing cold air when idle is an overheated engine. Never had problem with A/C until now.