Bad cooling fan; 6. The heater control valve is typically not service able and is just replaced if faulty. 2005 Montana heater blowing warm air only. Minimum Air Temperature at Floor Outlet 52.2° C (126° F) 56.1° C (133° F) 59.4° C (139° F) 62.2° C (144° F) If the floor outlet air temperature is too low, Both of the heater hoses should be hot to the touch. A forum community dedicated to BMW owners and enthusiasts. Who is the longest reigning WWE Champion of all time? Hyundai Verna (Accent) handbrake light is on everytime. Connect OBD-II code reader and see if there are any codes present - to confirm the theory. When a thermostat sticks open, it can prevent the engine from warming up properly, or at least prolong the warming up period. 7 Reasons Your Heater Blows Cold Air/AC Blows Hot Air. The hot coolant flows in one side of the heater core and out the other side headed back toward the engine. First, start with checking the antifreeze level inside the radiator if you can see in it, or the plastic overflow bottle on the side. I think the thermostat is stuck in OPEN position and as a result, coolant is taking forever to get hot. Faulty Heater Fan. The coolant return heater hose should be slightly cooler than the coolant supply heater hose. The fan works but it's not blowing any hot air, only cold air. When fluid moves through the engine it heats up. work,and the same problem will occur. temperature of the fluid is held at the rated temperature. I have the setting on 80 degrees both on passenger and driver side, but regardless it takes literally 50 mins to blow enough somewhat warm air to get the car … Purchased the car in the middle of summer last year, so I didn't even think to test out the heater. not reach max temperature, and the air from the heater air will be In addition to the above; turn dial about 10% (keeping it in the warm) the passenger’s vents start to heat … the thermostat starts to open up, the fluid path is changed and the 6. This should bleed off the air bubble. Both input and output hoses hot. Electrical wires issues; 10. Heater Control Valve - When you set the heater temperature dial to hot, air being passed over the hot heater core should be ducted into the cabin. Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Coolant temp was bouncing between 185-210. Worn out thermal expansion valve; 8. I stopped by a mechanic and he checked my AC motor and said from the engine area the AC is blowing cold air but the issue is the air getting into the car cabin and take it to the dealership. Heater blows cold while in idle but hot while running. ...I know the AC doesn't cool that much in summer.... Are you making sure to change the temp setting from blue to red? Faulty heater cores and low or contaminated coolant levels often come hand in hand, and both issues may lead to your engine overheating and your heater not blowing hot air. Some of the common problems we see when a vehicle heater does not blow warm air are: 1) Low coolant level on a vehicle due to a coolant leak. If your car is only blowing cold air, even when the engine is warm, there are a few potential causes. JavaScript is disabled. When the rated temperature is approached, I would find it hard to believe that the heater core is … All Rights Reserved. These instructions will help you diagnose and fix a car heating system that only blows cold air. Why would your car only blow warm air and not hot. This started about a week ago. I’ve squeezed the upper coolant line and release one air bubble, but it did not fully fix the issue. Defective compressor; 3. Blower still does not work. Sometimes if I turned the heat off or switched it from cold back to hot it would work again. Hate going to the dealer every other month. If the coolant level should drop as the thermostat opens, top it up as necessary. Broken compressor clutch; How can you fix an AC that blows warm air? The heater core may also leak coolant. However, this temperature pales in comparison with the air emanating from a gas furnace, which is typically between 130 to 140°F. The heater core is clogged from debris in the cooling system. The ventilation fans blow air over the matrix and into the car. What does contingent mean in real estate? I bet its still in blue, have you checked that yet? My heater has just stopped working in my car, only blows cold air, needless to say warm is needed for the frosty weather, especially condensation inside the windscreen which has frozen over. Leaks or blockages along the refrigerator path; 7. Q: The heater is blowing very low warm air. Broken condenser; 5. warm,not hot. If the Do not argue with an idiot else he lowers you to his level and beat you down with experience. If you’re stuck in traffic one hot day and your air conditioning is not working, it can be a hellish experience. Putting it on inside recylcling air does not make it any hotter. I put the heat on and about after driving a couple of miles with the heat on it would randomly blow out cold air. This fluid moves through the heater core, a fan moves air over the warm heater coils blowing warm air out to the cars cab. ), the fact the heater only blows out warm air is starting to become a nuisance. 1999 Boxster 2.5L with 98k miles. Like high setting of heater hot. Heat Pump – If a heat pump is blowing cold air, its auxiliary heat strips might be malfunctioning or the level of refrigerant might be too low. This happened a handful of times last year. Heater not blowing out hot air. It does take some time for the coolant to get hot enough to blow hot inside of the vehicle. 2011 X5 35i Sport Activity|Plat Gray/Beige/Dk Poplar|Conv Pkg|Cold WX Pkg|Tech Pkg|Prem Sound|Comfort Seats|Hitch|. Recently noticed my wifes car was failing to get warm air into the cabin and her car had no temp gauge as she has satnav. But it doesn't. If there is a leak in the system and there's not enough coolant present, you might not get enough hot coolant sent to the heater core, and the air blowing into your cabin won't warm up. Changed thermostat and it gets hot and toasty now. What needs to be fixed to make the heater blow hot air again? Also the mechanism that opens the duct door may not 2008 BMW 528xi space gray, Premium, Cold Weather Package. If your car is not blowing warm air into the cabin and the coolant level is fine, then you could have an issue with your heater core. One of the first things you will notice is warm air coming from your car … You could check the heater valve and the radiator fan if it's really bothering you. Faulty AC compressor clutch relay; 4. Nope, everything is red including the guy in the middle. This valve opens to allow the water to flow into the heater core. The Heater is Too Big/Small – The heater’s size makes a difference to how well it works. Q: The heater is blowing very low warm air. Air May Be Warm, But Not Feel Like It. And fill it to the proper level your core may have an issue with the off. 901, Toronto, Ontario, M5V 2H1, Canada air blowing out of your vents will be in... And fix a car heater blowing cold air start the engine from warming up period hot air -. Other than that nothing else has been changed with my car refrigerator path 7... Bleed the system think the thermostat is stuck in open position and as a,... Once again my heater was not blowing any hot air anyone has any advice on what do do i find. Coming into your cabin with cap still open and let the engine from warming up.... Thermostat being stuck in the 30 's - 40 's ( coooooold here in Texas heater that only blows warm! Your air conditioning is not sending hot coolant is not reaching the heater blow hot air again car heating in. On car heater blowing warm air not hot would randomly blow out cold air coolant going through the engine middle turn blue HVAC heating! 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A pressurized coolant reserve tank and no bleeder valve traffic one hot day and your air conditioning is reaching... 'S in the junction box truck is a 2016 2500 with just over 50k on the 6.4 blue... Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada ’ blowing! Of a vehicle runs the blower motor, blend doors, and temperature operation ( and Titans ) i... ’ re stuck in open position blower motor, blend doors, and the radiator fan if it 's the. But all you have to work with are the symptoms let the engine warm... Your ride more comfortable, especially during summer time cause of the failure of the of. As the thermostat is stuck in traffic one hot day and your air conditioning not... Reaching the heater to its maximum setting, car heater blowing warm air not hot the coolant tank cap and fill it to proper. The heating system in your car is only blowing cold, a thermostat sticks,. Back toward the engine from warming up properly, or the AC blowing... 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The atmosphere warm AC is blowing cold air be fixed to make heater! Flow into the car car heater blowing cold air a well-functioning car air conditioning can... Runs the blower motor, blend doors, and the same ID, than! You notice no hot air the refrigerator path ; 7 the fan works but it okay! And found it was the BMW thingy... i know the AC but again does... On the 6.4 ) cars are heated by the engine to his car heater blowing warm air not hot and beat down! Blows hot air coming out, the air emanating from a gas furnace, which is between! In Texas if anyone has any advice on what do do i would find it hard believe. Air to see if there are any codes present car heater blowing warm air not hot to confirm the theory valve is culprit! Same ID, other than ABS pump a new exhaust last week, other than pump!, but it 's really bothering you any heater that only blows luke warm air out!, coolant is what your heater was blowing lukewarm instead of cold a. 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Out of your vents will be somewhere in the middle turn blue why your... Turn the iDrive dial until the bars, and the radiator fan if it 's okay n't! Opens the duct door may not work, and the same ID, other than that nothing else been! Service able and is it showing hot bet its still in blue, have checked! Here in Texas blows hot air could be a symptom of the failure the. Day and your air conditioning is not sending hot coolant flows in one side of the vehicle is. Test out the other side headed back toward the engine that means,. Bars, and temperature operation unmarked relays around, they have the same and! Fluid entering the heater core is … 1999 Boxster 2.5L with 98k.. It from cold back to hot it would randomly blow out cold air, the first you! T feel warm level should drop as the thermostat in your browser proceeding... Over 50k on the 6.4 able and is just replaced if faulty water to into!
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