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

A flush can be done by disconnecting the heater hoses at the water pump (when the car is cold) and using compressed air to push the coolant and gunk backward, out the inlet hose. Today the outside temps were in the low 90s. At slower RPM (Revolutions Per Minute) if the air conditioner compressor will not. When I am moving and the idle is up it is fine but it is not cold when at a stop. The top and bottom hoses are hot and the radiator gets hot. Note, I'm doubtful about the symptoms as they have been reported. How to Troubleshoot the Air Conditioning in Toyota Cars by Contributing Writer Updated June 12, 2017 If you reach for the A/C in your Toyota car in the middle of summer and all you receive is a blast of hot air, your A/C system may be experiencing a number of issues. I literally just checked the a/c pressure about 20mins ago and the pressure is normal for the temperature outside. when the car is moving the AC is ok meaning blows cool air and the inside of the car is cool as normal but when i let the car idle for around 5 mins start to feel the humidity in the car. Our air conditioner blows cold air for about 10 min and then hot air. Hi there Austin, The A/C in my car does not blow cold when I am sitting still or going slow speeds. Learn 6 reasons why your AC isn't blowing A dirty air filter prevents air from flowing back into the air conditioner which inhibits the AC from cooling correctly. When I drive it a few miles up the road, it blows hot air. Never knew that until the battery started to fail load test. A/C blows cold @idle, hot while driving. It's going to the service dept this week. Cold Air When Idling. When I start the car, let it idle, the coolant temperature guage goes to the exact spot where it always has since it was new, and seems to be normal, but when I turn the heater on it blows "somewhat cold" air. Blows cool now, just keep in mind on a 106 degree day like today in Houston, at idle there isnt much air blowing across the condenser coils, and the compressor only moves as fast as the engine turns it, so at idle, the AC will always be a little warmer. not ice cold, but better than at idle. When the AC is running, you should feel warm (or hot) air being blown away from the exhaust of the unit. If the refrigerant level is low, your AC system has to work harder. My A/C works great as long as I'm moving. Once I bent what is left of the contacts If the car is not moving and/or the fans do not operate, the AC compressor will build extreme pressure and heat. The other problem is, it only blows cold air. Just before it stops blowing cold air the green light under the a/c button will start flashing. Its a lack of air flow that is probably causing the problem. I rev'd engine to 2000 RPM but still maintains its luke warm temp. And, being rather warm in the car, I lowered the temp to 60 degrees, and while it was blowing out somewhat cool air, it was NO WHERE close to being cold air - certainly not supposedly 60 degrees. The compressor is responsible for pushing cold air from the condenser to the vent. 6LB came out. When I start my zj to let it warm up, it only blows cold air till i start driving. The center vents get colder much quicker than the outside vents, and the outside vents will blow warm air even after driving for a few miles. This is a problem that has to be corrected by a mechanic. If your car heater is blowing cold air all of a sudden, you might be looking at a steep repair bill, but it's a complex problem. Fluids are fine, water pump replaced, back flush n burp done. Please advise. In most circumstances, this fan only turns on when the car is idling and not moving because static air cannot cool the radiator effectively. This shows how to diagnose the problem and replace the part. Car AC Refrigerant. It just started last year, blowing warm air when idle. So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. Below are five major components of the automotive AC system This moves the refrigerant throughout the system and is driven by a belt in on the front of the engine. I picked up a cigarette lighter volt. and it is not warm in the car. Air conditioner capacitors are a common cause of A/C breakdowns and very simple to replace. The tech at the dealer said all the V6 Fusions on the lot did it. CarComplaints. I hate to say it but I do not even bother diagnosing this problem anymore. After the first 1000km, you won’t need to warm it up for near as long, if at all. My AC wasn't blowing cold air last fall. I am having problems with my air conditioning again. Symptoms of a Bad Idle Air Control Valve If the 'Check Engine' indicator on your vehicle glows continuously, a possible cause may be a malfunction in the idle air control valve. Here's what to do if your vehicle is struggling to turn up the heat. 4 Common Reasons Why Your AC Will Blow Hot Air This Summer Posted 07-08-15 in Air Conditioning There’s nothing worse than sitting in your home and realizing that your air conditioner is blowing hot air--especially during the sickeningly hot summer months. I changed the evaporator temp sensor and it still does the same thing. The system has been charged. I live in Dallas, At speed it blows very cold. A warm air intake (WAI) is a system to decrease the amount of the air going into a car for the purpose of increasing the fuel economy of the internal-combustion engine. Hi there Austin, The A/C in my car does not blow cold when I am sitting still or going slow speeds. Outside condenser coils are clogged with debris. That's how an air conditioning system makes the inside of a car cold. The other ac pipe is hot to touch coming out of evaporator. On idle, the air is marginally colder if not the same. Some of the most common problems are: Low refrigerant. 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. The AC blows an ice cold air when starting the car and the engine is idle(the car is not moving). In other words, one day your car's A/C is blowing cold air, the next day it's warm air. Some cars, such as my '83 Jaguar XJ-S, automatically put the ventilation fans on high speed when defrost mode is selected, as though moving the warm air faster will somehow help. It blows cold air while idling but hot air while driving. I'm lost on this and we are in triple digits here in North Alabama. The compressor was fully on and the car just was barely cooling before I began adding the freon into the car – but it certainly was not keeping up and was not cool enough. Average failure mileage is 132,550 miles. Same thing with the heat. Go around front and see if the fan is spinning. Why does my gas furnace heat up and then blow cold air? Stack Exchange and Stack Overflow are moving to CC BY-SA 4. Fluids are fine, water pump replaced, back flush n burp done. Have a few wet rags ready to replace it with since it will dry out fairly quickly. Guys, What would cause my heater to blow cool air when idling, but warm/hot air when driving? I'm baffled. The sound you hear is the reversing valve. A warm air intake (WAI) is a system to decrease the amount of the air going into a car for the purpose of increasing the fuel economy of the internal-combustion engine. Even if the engine temperature gauge shows normal(middle of the scale), the heater(from the dash vents) blows cool/cold air when the engine is at idle. If the engine’s temp never reaches 1/2 way or the normal range, the heater cannot be expected to heat up either since it operates by exchanging heat from the engine’s coolant. In regards to why the car's enging temp rises at idle is quite simple. My A/C is blowing warm air and this is the second time I have had this problem since buying my 2015 Sierra less than 6 months ago. Many cars these days have an electric fan for either primary or added cooling. A/C all of sudden blows hot air - Chevy Message Forum - Restoration and Repair Help. com as How to. When I get on the freeway it cools ok…. I literally just checked the a/c pressure about 20mins ago and the pressure is normal for the temperature outside. In the mornings while driving to work it blows cold air since it's maybe 78° outside but once I get off work it's 100°F and it won't blow cold air. Blows cool now, just keep in mind on a 106 degree day like today in Houston, at idle there isnt much air blowing across the condenser coils, and the compressor only moves as fast as the engine turns it, so at idle, the AC will always be a little warmer. We took it back to the mechanic and replaced the in dash control unit (the part with the buttons to change from hot to cold and set the temperature in the center of the dashboard). When I am moving and the idle is up it is fine but it is not cold when at a stop. Note the two black hoses on the aux air valve that make up the throttle bypass path through the valve. if it works while moving I would suspect it is air flowing past the condensor is restricted, and usually we see a cooling fan has failed. Is your air conditioner not blowing any air? If no air is coming through your supply vents and the AC unit isn't working at all, follow these steps 1) Check the thermostat fan setting— Does your air conditioner run cold air sometimes but hot air other times? Make sure the fan setting is set to "auto". 6 Recently the AC has started blowing scolding hot air out of the side vents and the defrost vents while the center vents are ice cold. The AC dial is set to automatic on the dash. I'm trying to figure out what is causing it to open (if thats really happening). A new door actuator costs less than $100. That's why hurricanes and tropical storms form at sea and eventually move toward land. 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. please help me with this issue you can watch the temperture needle inside. It would also only blow on high. My AC started blowing warm air when sitting idle. air conditioner problems: help needed for ac we have a 2006 passat 2. So the air conditioner was basically not getting constant current thats why it was blowing off and on cold/warm air. It'll be blowing cold and then suddenly drive itself to full hot, and usually this is accompanied by a flickering of the display. Its a lack of air flow that is probably causing the problem. When car is moving, AC blows very cold. Warm air currents typically bring rain, because they form over oceans. Hot air comes from the vents when the AC is off due to ducting “gains” (heat we are talking about). If the blend air door does not change, then it will draw hot air from the engine and blow it. Vehicle: 2005 Honda Civic LX (Automatic) Issue: Heater blows cold/tepid air at idle and below about 25 MPH, otherwise works great. Within a few seconds of stopping the heater blows cold air. The cold air returns shortly, and the cycle repeats itself for as long as you are driving. But what if your car air conditioner blows cold and then warm air? When there's a problem with the compressor clutch, your air conditioner won't blow cool air for long. When I stop for a light or just sit in the car, it blows hot air. I set my heat control to high, the fan to high, in the morning I start my car from the house with the remote starter, after 15 minutes I go in my car and sometime the air coming from the heather is cold, if I turn the heat control to cold and then back to hot then hot air come out, my garage change the motor and adjust everthing and it happen. It blows cold air out of the center vents. 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!. So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. Warm Idle Speed = This is the Target Idle RPM for when the engine temperature reaches 170 degrees Fahrenheit. I have a 1989 coupe. I will say for the root cause of condensor / engine cooling fan inoperative what you will see is terrible A/C performance at idle and good performance at. But we are unable to find a solution. My 2005 mustang heater stops blowing hot air when I stop at a light or stop driving. Re: Air Conditioning not very cold Post by gvmdaddy » Thu May 12, 2016 9:42 am Always best to open all the windows for a minute or two to let the hot air escape as soon as you get in the car. when it does, no cold air blows. With the temp on LO and fan on full speed it blows cold air for about 10 seconds then starts blowing warm air for a minute, then cold air for 10 seconds, then warm and this carries on. It was over charged a bit at one point, but no longer. Yes, freeze solid inside into a block of ice. When the temperature at the thermostat has reached the set point, it turns off. One possible cause of this symptom is that the Thermistor may be defective. 6 Recently the AC has started blowing scolding hot air out of the side vents and the defrost vents while the center vents are ice cold. I'll start driving and the air continues to blow ice cold air as it has for years BUT as soon as I stop in a parking lot for a couple minutes or park in a driveway and the car is not in motion, the air blows warm dead air and stays that muggy way until. So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. Now that summer is here we started using it but all it do is blow hot air in our faces. Need an air repair technician right away? Just give us a call and we'll help you troubleshoot this problem immediately. If the air conditioner compressor still "grinds" I haven't noticed, but the car most definitely no longer runs hot and the air conditioning is as cold as ever. And when I got back I noticed when I was at idle in the driveway that water constintly pours out from underneath truck while. Covers AC that isn't working at all, isn't cooling A capacitor usually fails when you need it most. When I get home I can turn on the AC while at idle and it blows ice cold with no issues and the AC charge is close to 50 on the low side. August 15, 2014 : Followup from the Pelican Staff: SOunds like the engine is overheating. Anyway, two days ago the heater stopped working, when the car is at idle, all I get is cold or cool air blowing until I rev the engine or drive the car and then it gets warmer. 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. Hello to everyone reading this. d) Dry cold air moving over a warm surface. Your problem sounds more like low coolant level - i. As the intake draws its air from the engine bay then the hot air its now collecting is less dense. Once you get moving, or if in park and you rev the engine, then you start to get warm air. Intermittent overheating problems can also be caused by low coolant, air in the cooling system, a bad coolant temperature sensor, or even a faulty. How to Troubleshoot a Surge Caused by Car Air Conditioning. I set my heat control to high, the fan to high, in the morning I start my car from the house with the remote starter, after 15 minutes I go in my car and sometime the air coming from the heather is cold, if I turn the heat control to cold and then back to hot then hot air come out, my garage change the motor and adjust everthing and it happen. Tech B says the cooling fan could be inoperative. On two separate occasions after I started the car it would not accelerate or rev at all, though it would idle and move forward in idle. leaves etc. When driving, the forward motion will cause ambient air to move across the condenser with the What does it mean if my cars AC only blows cold when pressing the gas pedal, and blows warm when idling?. A few months ago I had the exact same problem and my dealership diagnosed it as a leaking hose and all of the freon was gone. I have a 2008 Hyundai Sonata. This time of year, especially when it gets cold outside in the evenings, we get many calls from homeowners concerned that there is cold air blowing out You may have noticed a loud sound right before cold air blows out through the vents in your home. it needs air pass by the pipes near the radiator in order to be 100% effective. I have noticed that while stopped the air does not blow as cold as when at speed,is this a sign of a problem with the system, low refrigerant. Check whether the electrical connections for the condenser fan is connected and seated firmly. When warm air is on the move. Your commute and errand-running could quickly become miserable if your car A/C isn’t blowing cold air. d) Dry cold air moving over a warm surface. This WheelZine article tries to list down the possible signs and symptoms of a bad idle air control valve. However, when idling the blower is strong pushing only warm air. so the air conditioning works better when your at idle. My A/C was blowing hot air. Re: Air Conditioning not very cold Post by gvmdaddy » Thu May 12, 2016 9:42 am Always best to open all the windows for a minute or two to let the hot air escape as soon as you get in the car. A simple turn of your key can keep the air cleaner and save money and fuel. I had the problem last year and my mechanic said there was an air bubble? somewhere and he put it up on some sort of lift that could tilt that is for truck work and somehow got it out. Usually in the AM the ac will blow cold air, once temp reaches 90+ in Tx, then ac blows hot air and the temp gauge goes up close to the red mark. Anyone seeing the same thing?. I tried all combinations of fresh and recirculating, max cold and high fan, max cold and auto, 69 degrees and auto. You can tell if your air conditioner doesn't have enough Freon if ice forms on the inside and. Today the outside temps were in the low 90s. A new door actuator costs less than $100. The hot air problem on hot days started one morning when it was cold and i turned on the fan and raised the temperature to warm up the car. Intermittent overheating problems can also be caused by low coolant, air in the cooling system, a bad coolant temperature sensor, or even a faulty. If at idle and car is at operating temp with heater on and you feel air coming out the vents but its cold and without touching any controls you start to drive and warm air starts coming out of them I would check for a vacuum leak going to the controller. This is probably a bad idea, since a slower fan speed would result in the air being hotter , and there's no problem with the air reaching the windshield or anything. There are two components of this question, first is about the AC air temp and the second is the temp under the hood. With the A/C getting hot at idle and cool at speed, it's probably not the relay. Normal A/C gets the same full hot air. The top and bottom hoses are hot and the radiator gets hot. The condenser will need moving air to transfer heat away from it and into the air outside. I brought car to two VW dealerships to have their service department diagnose the problem. Over time, a car's air conditioning system will begin be less and less effective, until the day when you turn the knob and all it spits at you as you roast in the summer heat are tepid, warm gusts. Mine is a '98 SHO and the A/C is behaving similarly. Just before it stops blowing cold air the green light under the a/c button will start flashing. When temperatures drop to freezing, or when it's cold enough that windshields will frost over, the oil needs to warm up before it can move smoothly throughout the car. The other ac pipe is hot to touch coming out of evaporator. Unless the bubbling is excessive, continue to let the engine run at idle for a few minutes once it reaches normal operating temperature, then shut it down. We have had it re gassed twice and today we had it coneccted to a ford computer and nothing All presures are acurate and all electronics are fine. The car will run cool as long as you are moving at a fair speed with the fan not working. what could be causing - Answered by a verified Dodge Mechanic We use cookies to give you the best possible experience on our website. Good Info, My Ram is ice Cold, But the Wifes PT Cruiser acts that way when her car is stationary, will have to check it out. 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. First off, everything here applies to vehicles with water-cooled engines. Cold Air Guns use vortex tube technology and filtered compressed air to produce sub-freezing air as low as -30 deg F for numerous industrial spot cooling applications. Should You Warm Up Your Car When It's Cold? When your engine is cold, the gasoline is less likely to evaporate and create the correct ratio of air "Gasoline is an outstanding solvent and it can actually wash oil off the walls if you run it in those cold idle conditions for an extended period of time. Always were shoes and do not touch any metal part of the breaker box when resetting a circuit breaker. I got it checked at pepboys early this spring and I was told there was a small leak on some expansion valve. There are two components of this question, first is about the AC air temp and the second is the temp under the hood. With the temp on LO and fan on full speed it blows cold air for about 10 seconds then starts blowing warm air for a minute, then cold air for 10 seconds, then warm and this carries on. I was blowing warm air out the vents and a tech at work went to my passengers side door and put his arm up under the glove compartment and pulled I can see the door closed when turning max ac on so you dont pull outside air. If it is blowing cold now… go enjoy the cool air! H – too high L – too high. The blower motor blows air across the evaporator core. If the car was low on coolant, and the heater is blowing cold air, this sounds like a possible water pump failure. Most of the time home air conditioners run on a 30 or 40 amp double pole breaker. When it shifted to hot the customer could not get it to turn back cold. You Feel the Cool Air, but There is None Blowing. This is a 2003 Escape with 130k miles. I have checked the coolant level and is normal. We had a pretty warm day and I decided to try out the air conditioning. The compressor is responsible for pushing cold air from the condenser to the vent. when moving it blows the warm air from the vents. My fiancee's Impala exhibited the same symptoms and it turned out to be the water pump had blown a seal and was ejecting coolant. The Air Conditioning System will get cold when the Compressor Clutch is engaged but the clutch quickly quits and just blows semi cool to warm air. could be a number of things. Air source heat pumps are a great way to lower your heating bills, but are they the right choice for cold climates like Canada? Air source heat pumps use the principles of heat transfer to heat and cool your home. This term may also be used to describe a short ram air intake, a totally different intake modification. The electric fan runs and the coolant is full. The second area where cold air impacts respiratory health is in the nose. 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 sure why, but the ac seems to work only while in motion 06-23-2011 10:02 PM #17 b4a41point8t. I set the temp to 60 degrees but all I got was what I call room temperature air. There are no leaks that I can see, I also used the dye and UV light. If you drive an old Volkswagen with an air-cooled engine or a brand new electric car, then you have some. What can I do. 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. Average failure mileage is 132,550 miles. Golf: blowing cold air. As the warm air moves across the evaporator, the heat is removed from it, transferred to the refrigerant, and cold air enters the passenger compartment. 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. The AC blows an ice cold air when starting the car and the engine is idle(the car is not moving). So if your car’s heater only blows cold air out the vents, read the following car repair article to gain a better understanding on how the heater system works and how to make it blow hot again. You may notice then when you have the A/C on and @ idle it will not get any hotter than it normally does with the A/C off. The AC blows hard all the time, but when you are sitting at idle at a redlight or something it goes from cold to lukewarm. However some symptoms can have more than 1 root cause. When you've paid a premium for air conditioning in your car you're ready to be comfortable when you hop in. Never knew that until the battery started to fail load test. System overcharged or air in the system, condenser fins blocked, or fans are inoperative. There is a sensor that will interrupt. If the Freon has leaked out, it won’t turn on, so nothing is moving inside. The car engine’s coolant is pumped through the heater core while the fan (also called a blower), pushes air through the heater core fins. Your car AC is actually a heat exchanger that recirculates warm air from inside the cabin and replaces it with cold air. when moving it blows the warm air from the vents. thanks a bunch. Hi i have 2003 3. 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. Fluids are fine, water pump replaced, back flush n burp done. Is your air conditioner not blowing any air? If no air is coming through your supply vents and the AC unit isn't working at all, follow these steps 1) Check the thermostat fan setting— Does your air conditioner run cold air sometimes but hot air other times? Make sure the fan setting is set to "auto". I was blowing warm air out the vents and a tech at work went to my passengers side door and put his arm up under the glove compartment and pulled I can see the door closed when turning max ac on so you dont pull outside air. ASM's heating and air conditioning consultation services provide consumers with the information they need If your heater is blowing warm air but that air is venting into the attic or mixing with colder air from your attic You'd change the oil in your car, but would you attempt to replace the transmission?. How To Make AC Ice Cold, Recharge air, and Force the Compressor Clutch to Engage. It’s likely your car air conditioning has lost its gas. Hot air is less dense than cold air, which is why hot air rises and cold air sinks, according to the United States Department of Energy. We can help you troubleshoot air conditioner not turning on and help you repair your air conditioner or heat pump. If your A/C is not blowing cold air, here’s what might be wrong, and what you might be able to do to remedy the situation, by either fixing it yourself or bringing. The idle control valve has a few moving parts inside it that often become dirty and lock up over time. Failure usually is seen as one of two symptoms. My A/C works great as long as I'm moving. How to Troubleshoot the Air Conditioning in Toyota Cars by Contributing Writer Updated June 12, 2017 If you reach for the A/C in your Toyota car in the middle of summer and all you receive is a blast of hot air, your A/C system may be experiencing a number of issues. ) Close the valve by turning it to the right. Well, I've had my 2006 Tundra Double Cab Limited since October 09 and absolutley love it. (7) Never leave the house and turn OFF the A/C. Obviously when it blows cold air I can see/feel that the AC compressor is kicking in and is not when blows warm/hot air. How To Make AC Ice Cold, Recharge air, and Force the Compressor Clutch to Engage. If I am not moving the air turns warm. Is your air conditioner not blowing cold air? Find out why here, and call Arctic Air Conditioning for AC services in central New Jersey! Why Doesn't My Air Conditioner Blow Cold Air? Summertime can be brutally hot here in central New Jersey, and there's nothing more frustrating than turning on. follow small side of a/c lines (high. My AC only blows cold air when the is vehicle is moving and warm air at idlecan anyone give me their epinions Make sure the radiator fans are running at full speed when the compressor is on, and that there is no airflow obstruction (i. When the temperature of the blowing air went from 58 degrees to 87 degrees, it was 81 degrees outside, I had the AC on max cold and high fan. I have a 2005 Ody LX with 39k miles that I just purchased used about a month ago. 1999 corvette AC blows hot air. heater on at idle and will not blow warm air. This shows how to diagnose the problem and replace the part. Cold air stimulates an increase in mucus production, but like other substances, mucus becomes thicker in colder temperatures. AC blows with good gusto cold when vehicle is moving down the road. The AC is governed by the settings of the thermostat, so if you have set the temp quite high, suppose at 27℃, then the ther. As the intake draws its air from the engine bay then the hot air its now collecting is less dense. Nissan Pathfinder blows cold air while idling. I changed the evaporator temp sensor and it still does the same thing. 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. Usually when your A/C works fine while moving but gets warm when stationary, the likely cause is the condenser fan is not working. your ac will not blow as cold as it can because the way an air-conditioning system works. - Chrysler 2008 Pt Cruiser question. It blows warm air when RPM's get around 2K or higher. Does anyone have any issues with their ac not blowing cold air when their truck is at a stop. It never blows hot air, but does go from very cold to warmer then back to cold again. Please advise. Is your air conditioner not blowing any air? If no air is coming through your supply vents and the AC unit isn't working at all, follow these steps 1) Check the thermostat fan setting— Does your air conditioner run cold air sometimes but hot air other times? Make sure the fan setting is set to "auto". The A/C only seems to blow cold while the car is moving. Boilers make hot water or steam and move it around your home in pipes. I gave him the short answer… it travels faster through warm air. RE: AC Stops Blowing Cold Air After a while IP: Logged Message: We still have the problem after running the AC for 45 minutes or so, less cold air flows from the drivers side vents, and thenn less and less form all the vents. When your car is idle and the air conditioner is turned on, carbon monoxide fumes may seep in through the air vents. In the mornings while driving to work it blows cold air since it's maybe 78° outside but once I get off work it's 100°F and it won't blow cold air. You are not alone with the warm AC at idle issue. Warm up your car correctly on cold mornings about temperatures nearly reaching 100 and wishing the air conditioning in our vehicles ran. Regas for car air conditioning. Then had the same problem again blowing warm air when parked or at stop lights & signs. While driving vehicle I would turn it all the way to the right and it blow hot air for about 2 seconds and then blow warm air and nothing else. On hot days, the a/c works fine and blows cool air for about half an hour, then it just blows warm air. When car is moving, AC blows very cold. I faced this problem when I used to have a leak, and the mechanic found out that the leak is coming from the compressor pressure valve. 7t, I let the car warm up enough, turn it on with the remote start about 30 minutes before, it's about -20c here. and it is not warm in the car. When temperatures drop to freezing, or when it's cold enough that windshields will frost over, the oil needs to warm up before it can move smoothly throughout the car. Every time you turn off your car engine in place of idling, you'll: Make the air healthier by cutting down on hazardous pollution in your town or community. So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. Ambient temperature air passes through the cabin air filter and through the cold aluminum evaporator fins. This 2003 Toyota Camry came in with the complaint that sometimes the a/c would stop blowing cold air. could be a number of things. Almost immediately at stopping at idle it begins to blow warm/hotter air. Veteran-Owned heating and air conditioning company, and pride ourselves on giving people honest, straight answers to their questions. i have not had a chance to get pressure readings yet. It cools the car again when The purpose of the high pressure hose is to increase and decrease AC pressure during different driving conditions. Hot air is the last thing you want from your home's AC unit. I'm trying to figure out what is causing it to open (if thats really happening). With the temp on LO and fan on full speed it blows cold air for about 10 seconds then starts blowing warm air for a minute, then cold air for 10 seconds, then warm and this carries on. Both air and moisture, if left in the system, can cause corrosive damage to lines and other components as well as wear down. I brought car to two VW dealerships to have their service department diagnose the problem. Some cars, such as my '83 Jaguar XJ-S, automatically put the ventilation fans on high speed when defrost mode is selected, as though moving the warm air faster will somehow help. I set the temp to 60 degrees but all I got was what I call room temperature air. That's becasue your VW Beetle AC has run out Freon, freon is what make the AC blow out cold air, when your car is out freon causing the AC to blow out warm air, so your VW Beetle needs to recharge the freon for it to blow cold airs. 6 Recently the AC has started blowing scolding hot air out of the side vents and the defrost vents while the center vents are ice cold. I am going to take it in tomorrow Monday see what the dealer says. When you ac starts blowing warm or outside air at idle it is because you have a vacuum leak in the system. This does not happen often on it's own, more probably if the compressor was overhauled. - Chrysler 2008 Pt Cruiser question. This time of year, especially when it gets cold outside in the evenings, we get many calls from homeowners concerned that there is cold air blowing out You may have noticed a loud sound right before cold air blows out through the vents in your home. Guys, What would cause my heater to blow cool air when idling, but warm/hot air when driving? I'm baffled. In the mornings while driving to work it blows cold air since it's maybe 78° outside but once I get off work it's 100°F and it won't blow cold air. The AC is now cold but only when the car is sitting idle. Chevy Forums FREE technical assistance for your restoration and repair. When I start my passat, it blows cold air after a couple minutes as it should. A thermostat typically opens when the coolant temperature is at 195 degrees Fahrenheit; if malfunctioning, it does not heat the coolant enough to blow hot air. Sounds like a faulty air mix actuator to me. The first culprit of your car air-conditioning not giving off cold air when the car idling is the lack of air flow in the condenser. I rev'd engine to 2000 RPM but still maintains its luke warm temp. So if your car’s heater only blows cold air out the vents, read the following car repair article to gain a better understanding on how the heater system works and how to make it blow hot again. If it is blowing cold now… go enjoy the cool air! H – too high L – too high.