Bmw e46 heater blowing cold air. New Aux Water Pump 3.

Bmw e46 heater blowing cold air Then a moment later, the air turned cold again and the engine temp. Just a thought. Seems to run and drive fine if heat is set to hot. The AC is blowing cold air on left side but passenger side is warm air. It sometimes blows out a little bit of hot air, but most of the time the air is lukewarm. I have checked the basic stuff like the red and blue dots. 2002 E46 325ci vert. I even dismantled the actual motor that controls the flaps as this is sometimes the problem, that in the unit, the teeth break off (not my problem tho) Jun 29, 2011 · several times. So it is officially Summer here in the North East and that means two things: It is also Summer across most of the planet (except South America , South Africa & Australia) and the forums will get inundated with tons of My AC System Is Not Working threads! Jul 2, 2014 · The car in question is a 2001 BMW E46 330i Manual, with 250 000Kms. Turn off A/C and slowly it turns hot. Kept searching threads and found this thread and saw found Jun 11, 2012 · Here is my experience with this issue: unequal cold air from side and center vents, random hot air on the floor or defrost up while air is on, or cold air coming from both side vents and warm air from the center vents. If it becomes blocked, it may prevent warm air from reaching the cabin, causing the heater to blow cold air instead. what is the problem? Posted by beemer on Jan 12, 2015 Dec 20, 2011 · Did nothing. The old girl had to sit for about 2yrs bc her ECU shut the car down after it had a brainfart and locked the car up. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Oct 4, 2019 · The heater in my 2005 325ci stopped working recently, it will still blow air but it is cold. Nov 27, 2009 · heater blows cold air at max temp. no broken impeller, still turned with a seemingly good bearing. Nov 17, 2011 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. I don't know if the E46 heater valve is electrically actuated but if it is it may be going bad. Jun 12, 2006 · A weird thing happened today after reading this threadI had the A/C, set to 59 degrees. Nov 17, 2012 · Here's what I found. Now it's winter, and the cold air keeps blowing. New Radiator 2. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Jun 6, 2017 · When I set the vent to just the top (windshield vents) it blows warm/hot. The thermostat is responsible for regulating the engine’s temperature and ensuring that it stays at the proper level. 5) Drive the car a bit, allow it to cool back down, and recheck the bleed for air. the right side temperature lowers after cabin cools a bit. When it was working If i remember correctly it was just either hot or cold. And I was messing with the fuses but Iater on that day when I tried putiting my heater to warm it would not blow out air cold or hot. Nov 16, 2023 · Buy HVAC Heater Control Valve Solenoid For BMW E39 E46 3 5 Series E83 X3 64118369805: Heater Control Valves - Amazon. However, the CEL went out and came back on later. The problem is much more pronounced from the passenger side vents than the driver's side, thankfully. The A/C works fine as far as I can tell (haven't been using it lately as its Winter here) - the Fan/blower works fine - I have complete control over fan speed still, and that has not been acting up. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Mar 27, 2018 · I just bought a 2006 330I, the A/C works good, but when set to 84 on both sides, the heater only blows luke warm air on the drivers side and the air on the passenger side is cool. Blower works fine, air conditioning ice cold in all zones, just not much warm air. My car's cooling system is all new so its not a faulty cooling system part like the water pump. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada May 16, 2008 · There are two common failure modes of "A/C blowing warm": If you have warm air blowing on both sides and cold air out of other vents your Heater Control valve needs replaced as it is stuck "open" and making the heater function. Recently the heater suddenly starts blowing cold air and after a short while the orange overheating warning flashes up. No hot air at all. com is an independent BMW enthusiast website owned and Jul 31, 2013 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. and my pressure was good. A blocked heater BMW X5 and X6 Forum (F15/F16) > BMW X5 (F15) and BMW X6 (F16) Forum > BMW X5 and X6 (F15/F16) Forum My A/C blows cold air on driver side and hot on Passenger Google Search Mar 15, 2013 · I don't understand how the FSR or the heater valve can have anything to do with the OP's issue. It used to take 20+ minutes for my car to get warm on the way to work 2 years ago, now I flush it before every winter and it starts pumping out hot air within a few minutes (I usually wait for the water temp gauge to hit the first slash in the cluster to really kick the heat on - no sense in blasting the heat and only getting cold/cool air) Nov 29, 2012 · Wondering if anyone can help me please as I have a similar problem. A couple hours later with an outside air temp of about 90 the AC is NOT blowing cold. It will make the temp read at -40. the FSR was already replaced by the previous owner. If the car thinks it's that temp, it won't let the A/C work for fear of freezing up the evaporator. Oct 1, 2008 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Having some issues with heating system in the car. Just a moderate amount of cool but not cold air. Neither of those is responsible for diverting air. amazon. I replaced the heater valve. Maybe every 4th or 5th time I drive it. I checked my coolant and the levels are fine. But when it is open it blows only hot air. While driven fo 5-10 min in starts to blow hot air. The temp gauge never moves from halfway. The weather became warmer and I did not worry about the problem until it creeped up again this winter. The blower motor is responsible for taking in outside air and blowing it through the heater core, which then heats up the air before it is released into the cabin. I am able to close the footwell vent by de-activating the button which controls it. The good:-The heater works perfectly, blows nice and hot air, at consistent speeds. It's as if the hot air is mixing Oct 13, 2023 · Now, when it’s warm out like in the summer this issue literally never happens, I always have perfectly working cold air and hot air. This is the 3rd time the car has done this to me. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Nov 11, 2018 · The hvac is designed that way. The A/C started acting funny several weeks ago, even though it is set on AC MAX it will blow hot air on one side and cold on the other: Passenger=HOT Driver=COLD or viceversa, depends on the cars mood. May 30, 2011 · My air was not cool enough and it has been over 100+ here in Vegas. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Dec 16, 2007 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Mar 5, 2010 · Hello Guys: Once in a while my car is blowing cold air from the center and side dashboard air vents even when I am running the fan in heater mode (with 3 red rods on the dial, compressor off and temp above 70F). It should be blowing cold on all vents. Just keeps blowing cold air (it's "cold" here in texas) I want to start doing some troubleshooting myself. Seems really odd that it did that. Jul 5, 2012 · The AC blew nice cold air the entire time with an outside air temp of 82. The passenger can achieve individual cold/warm air distribution and stratification in the vehicle at a constant temperature setting using this stratification facility. The temperature is set to 60 on the Climate unit , the outside temp is showing 70 or higher. From some troubleshooting I realized hot air was only blowing from near the windshield (fortunately so I can still defrost the window), but only cold air on the middle vents and floor. Once in a while means the whole ride. Jul 25, 2021 · No and it's now not 70 here it's cooler but what I said is when the heater's as low as it'll go it still blows warm air not cold, not ac cold as it doesn't work but just colder. Jun 28, 2020 · Btw, the heater “radiator” and the AC evaporator are stacked in the dash. even when the temp control is full at red it blows ice cold air,thanks. so pulled it. Oct 22, 2015 · BMW designed the AC in the E46 to keep only the driver cool when the AC system is low on refrigerant (R134a). Nov 13, 2013 · Change your coolant. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Feb 12, 2011 · Recently my '03 330i has started blowing out cold air whenever I come to a stop or the engine is just idling. When set to 59*c and auto climate the outer vents (near the windows) blow cool, not cold. Good Luck Jul 25, 2008 · The blower blows air over that cold evaporator and cools and dries the air. Any tips? A forum community dedicated to BMW E46, E90, and F30 owners . Content on E46 Fanatics Forum is generated by its users. haven't let overheat again. It's probably due to whatever controls the diverter door or the door itself. About 30 minutes into driving the heat decided to come on. As I've said too with other cars I've had they all blew cold air (not warm like this) when the heater was right down and the ac didn't work on them either. So it seems like the product worked but my AC is not blowing cold air but blows fairly cool air. Popular failure in BMW´s. Aug 15, 2024 · Heat Pump Problems That Produce Cold Air. A bit of history, the previous owner recently replaced the thermostat and water pump. The temperatures have been below 20 degrees for the last few mornings and yesterday when I started the car, the heater was blowing cold air. Even when set to max a/c. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Aug 28, 2016 · After putting everything back together the air conditioning blows Luke warm air and the heater does not blow hot air. Nov 16, 2014 · Worked like a charm, cold air was finally blowing! I set the climate control to max and bled the coolant by loosening the bleeder valve and running liquid through. Previously, my a/c was not cold and the vents to the passenger foot area was blowing hot. Dec 11, 2007 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I took it to a local shop (not a BMW specialist) and he said the compressor is shot, and wanted to charge ~$1800 for parts (compressor/dryer) and labour. The road then turned to the right, and it started blowing out quite cold air. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Oct 12, 2012 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Playing with the vents I found out (when both bottom and front vents where on) that the bottom vents will blow very warm/hot air while the front vents where cold. May 24, 2008 · Currently own: 08 BMW 335i vert and 03 Infiniti G35 sedan Previously owned: 00 Mercedes-Benz S-430, 97 Volvo 960, 01 BMW 330i, 97 Lexus ES300, 09 Honda Civic LX, 04 BMW 325CIc, 00 BMW 323i, 97 Honda Accord EX Coupe, 99 Ford Expedition EB, 05 Mazda 6i, 94 BMW 325i, 98 Pontiac Firebird Formula WS6 "Collectors Edition", & 87 Honda Prelude Si Nov 29, 2021 · Cold air blowing while heat set to 80 E46Model Year: 2000 - 2006. Even when running the AC full blast, the passenger side vents don't really get cool, maybe just slightly cooler than outside temp, which results in me Feb 16, 2011 · My 525 just stopped blowing cold. Ussualy blows cold air when I turn up the Climate control to full. Details: The odd thing is, every so often, for whatever reason, the heat will kick on, but it's rare. Hmm. Definitely not cold, absolutely not ice-cold. I get an occasional burst of cold air but generally the air coming out of the vents feels about 70 degrees. When heat is turned on it will blow hot on the passenger side and cold on the driver's side face and foot vents. But the inner vents blows warm air. However if I turn the car off and immediately back on again the heater starts working again and no overheating warning. May 8, 2014 · Hi,my 1995 bmw 316i only blows cold air. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Oct 30, 2015 · This setting adjusts the ventilation temperature. When I set the positions to the windshield and face at 59*c, it blows cooler air, but not what the coldest. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Any ideas where to start? Was thinking on checking the heater control valve. I. Once I start driving, the heat works as well as I could ask for, even at stop lights and parking lots idling. During cold weather where the temperature set on the control panel causes the vents to blow warm/hot air, it blows very hot as soon as heat is available after start-up. I replaced the heater control valve and nothing changed. Aug 30, 2016 · I have a 2009 X5 30i. Mint condition EXCEPT the vents blow hot air unless the A/C is on. Jul 20, 2016 · heater on - blows hot air on passenger side, cold air on driver side I ended up scratching in the foot wells and checking the blower and Door Blend Actuator module, flaps all that nonsense. Some reasons for this could be that your heat pump is in defrost mode, there’s a faulty reverse valve, or you have a refrigerant leak. Jun 13, 2012 · Here is my experience with this issue: unequal cold air from side and center vents, random hot air on the floor or defrost up while air is on, or cold air coming from both side vents and warm air from the center vents. Obviously I'm thinking the HCV again. in this video I show you how to diagnose your cars air con and how to tell if its not working and how to repair it for free without even doing anything I als Jul 17, 2021 · Hey all, I need some help troubleshooting my AC system on my beloved 2003 BMW e46. Heat turned up all the way, all knobs set to the red zone, etc. Jan 9, 2011 · Inside the cabin, the two main air ducts above your radio are seperated by a switch with red and blue markings. There also seems to be an imbalance in the temperature between the drivers side of the May 6, 2010 · Other troubleshoot areas can be the AC Belts. Air that has just been cooled by blowing over the evaporator core now also blows over the hot heater core. com I warmed the car up and turned on the A/C Nov 1, 2023 · Hey guys have a 2011 bmw 328i the heater has always blown cold air so I flushed the heater core and that didn’t help, I flushed my coolant also but didn’t help, was thinking heater control valve but I’m thinking my car didn’t even come with one, I can see where it’s supposed to be mounted maybe they took it off and never replaced it? Dec 30, 2018 · Hello guys my heater keep blowing cold air even when the engine temperature is in the middle and after driving it, needs like 20km or more to get warm air, heater control valve is tested and cleaned and its working properly so what should i check now Jan 19, 2010 · While driving, I keep my heater blowing, but only cold air was coming out. It is blowing air, but not cooling it. Also the AC Compressor which sits under the engine block may have been susceptible to oil leakage from a bad valve cover gasket, corrosive coolant fluid leaking from a broken hose, and/or washer fluid from a broken washer fluid tank pump (all which sits directly above this Dec 31, 2017 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Jun 5, 2011 · Even after the complete 30minute drive to work, the heater was still blowing cold air. Apr 20, 2021 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Jul 10, 2008 · I have a E36 1993 325i BMW with 190K on her. Unless you have four zone climate control the rear center vents don't have heat coming through them. So I have similar situation that applies, maybe. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Jan 11, 2010 · Blower seems to work fine (blows air the same) All settings (feet, body, defrost, etc) all work What doesn't work: Even at 91degrees, it's freezing. It might also be the coolant valve for the passenger side, allowing coolant into the heater core when it's not supposed to. At this point the heater should be throwing lots of hot air, which indicates that the heater core is filled with coolant. This can be aggravated by a bad heater control valve. I let the car run for an hour today with the heat set on 91 degrees. Apr 26, 2009 · Does it blow cold on the driver's side, as it always has? If so, it may be the flap motor on the passenger side. Does anybody have any idea what could cause this and how to Dec 12, 2013 · Hi to everyone! Sofacts to begin with: my 2004 325I blows cold air until driven for a while. Why did BMW do this? Jun 21, 2010 · I have spent some time looking for this information but have not been able to find a solution. gauge needle dropped to the middle. Aug 28, 2018 · Replacing the heater valve fixed my issue. The heat may also be coming through with it but not noticeable with all the cold air mixed with it. . The air is luke warm at best. All of the sudden, VERY hot air came out and the temp. Same with the upper vents which blow on the windshield. :dunno: Jan 25, 2019 · Upon starting the car with heater on full it was blowing cold, I presumed it was an air lock and upon searching this forum to find any venting points, I found the sequence for the automatic venting from the electronic water pump At that point I found that the water pump was not working Apr 17, 2012 · When the AC is on, and the footwell and dash vent button is selected, I get hot air out of the footwell, and almost ice cold air out of the dash vents. Applies to BMW 3 Series from 02-05. There is documentation detailing the procedure to test the heater valve. I had a message on the display (coolant level low). Oct 18, 2008 · Blowing hot/warm air when the HVAC is set to 16 degrees? My immediate thought was the water valve which opens/closes, allowing hot coolant in the heater core. At idle if you turn the fan speed down to half way it blows super hot air. If I turn off the AC button then turn it back on, sometimes that will engage it, but not that often. Of course I'm 3 months past the warranty Dec 29, 2009 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. It blows cool air through all of the vents! The whole coolant system was recently replaced by previous owner (have receipt). May 16, 2011 · I drove the car around for awhile and check the pressure again, by now it's been about 30min. For heat, make sure there are three red circles showing or else you will get cold air. All this worked fine before I started the teardown. Jul 10, 2011 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. The air goes through the heater and then through the evaporator. Jan 3, 2018 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. The passenger is warm-ish, but not as hot as it should be. Apr 5, 2019 · Hi all, I have a 1series 118i es convertible 2010 (e88). So in your case cold air. I did the water pump yesterday and that didn't change anything. This happened a couple of times over the course of about 3 miles. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Oct 18, 2019 · Ok, I have a 2003 BMW E46 325i that the heater blows cold air, and the tranny overheats just sitting. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm The heater in my 330i has completely stopped blowing any hot air. car was completely drained of coolant for about 2 months on jack stands ,I bled coolant 3 times before driving to make sure no air . As long as I'm above this it works fine and the temperature is consistent. Only cold air or warm air flows out of the ventilation vents at the maximum/minimum air blend- ing flap positions. Jun 13, 2016 · My 2006 330xi has been doing this for years. Air velocity is close to the same from all three levels of ventilation, floor, dash, windscreen. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada May 6, 2010 · Troubleshoot and Recharge Your BMW E46 AC System In 3 Minutes for less than $20 Okay. thought was water pump. I have checked the manual dial on the vents. I purchased some coolant and fill it up, however it is still blowing cold air. 2015 BMW M4 2015 BMW X5 xDrive50i (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999 Heater not blowing hot air E46 I have found out that i need to change the actuator and the final stage unit part - BMW 2001 325 question Nov 14, 2024 · This is my first car and the first one I have ever worked on. When I turn off window and floor vents, leaving only middle I get semi-coolair. Nov 18, 2004 · Definitely the thermostat. A/C works well on both sides. Now I can't get any hot air blowing (I just get cold air). My x5 would start blowing cold air to the drivers bur the passenger and rear would stay hot. Nov 3, 2023 · If your BMW’s heater is blowing cold air, the issue could be with the blower motor. Those with heat pumps instead of furnaces can also experience cold air blowing in when it shouldn’t. Jan 10, 2013 · Hi does anyone know where the Heater control actuator flap for the hot and cold air blend is located on bmw e46 330ci I'm only getting hot air there is No contral over temp any ideas thanks Dec 12, 2016 · 2008 BMW e90 Had a bunch of work done recently: 1. It doesn't do this all the time but more often than not. I have also noticed that my coolant level drops somewhat (the amount of the narrow part of the ET where the cap fits) but has not gone so low that the car has Jan 1, 2010 · With the AC on I get cold air at the footwell. I assumed the valve was stuck and would not close completely, hence allowing coolant flow in the core. 8i E70. The fuses are fine, and I'm starting to wonder what the problem could be. but no hot air out of heater at normal operating temp. Oct 17, 2009 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Well I have a 330i 2003 (e46 - US version), I noticed that I was getting just full blast hot air couple months ago. If the system was recently serviced, it was not bled correctly (you can do a search here using the "Search This Forum" button near the top right of the forum page to find the details), or you have a coolant leak. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm May 14, 2011 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. The FSR controls the fan speed and the heater valve controls water to the heater core. BMW Garage: BMW Meets: Jul 23, 2012 · The A/C on my '01 325xi wagon is acting up. Oct 16, 2020 · Helpful tips if you have poor heating from the HVAC system, especially in colder climates, these steps can save you money. Mar 1, 2007 · Air blows, but it is cold, no heat is coming E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Oct 23, 2018 · Driver side floor blowing hit air and cold air everywhere else, turned out to be the heater control valve in the engine bay near the driver side wheel well, One of the values was either stuck open or closed, cant remember Nov 8, 2007 · just went out and check mine, i do have a heat and cold switch just like on the center dash vents, just in case yours is missing some stickers, on the left (driver's side) that dial turns the vent open or close, on the right, that is the heat/cold dail, turn it up to turn the heat and down for cold. Had it looked at by a repair shop a couple years ago and they said that the radiator leak was causing the issue and it did fix it for about 7 months Jan 9, 2025 · 99 e46 323 , car over heating when climate control is set to cold or off. and if that's not the case for you, than the Apr 28, 2008 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Jan 9, 2011 · hi, everyone. Nov 29, 2015 · Hey I have a 2002 Bmw 330i. Dec 18, 2017 · 2004 E46 (325Ci) coupe here with 203,000 miles. After replacement, it blows cold again. I went ahead and bought a replacement valve from Tischer BMW (USA) Nov 22, 2012 · However, heat worked only on the highway but it was only warm, plus it took 20 min before it got warm air blowing out the vents. took a left hand turn on an off-ramp fairly quickly, and it started blowing out warm air. When the heat got hot on the highway, I turned on my Ac and dialed it down to 59 degress and move the roller all the way to the 3 blue dots on the vent. Dec 26, 2009 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. I also thought the refrigerant was low and took it to the dealer to be serviced = $55 (still blowing warm air). Lets see if we can beat last years record of 1,346 Threads started from the first warm day of the year thru the summer on AC blowing warn air thru the passenger vents! Apr 14, 2012 · Hot and cold air mixing. P. New Aux Water Pump 3. One of the most common reasons for a BMW car heater blowing cold air is a faulty thermostat. Feb 11, 2022 · Any A/C pros out there that know E46 dashboard designs? Bought the car from friend’s mother in 2019 with 31,000 miles. serious. This happened once in the last month and happened twice already in the last 2 days. Good evening lads! So ac blows fine same with just regular air. I have a 2008 X5 4. the opposite happens if you turn the upper off and leave the middle and lower fans on - cold in the middle and hot on the feet. :woot: However, when my heater is on it blows cool air no matter how hot I set the temperature. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada May 12, 2008 · Waveho is definitely correct! I'll bet that the sensor is not working giving you this problem. Welcome to the ultimate BMW X3 community. A dealer, or well-equipped indie, can read the A/C codes to diagnose. put water pump back, tried following bleeding methods. Jan 19, 2012 · Hi All-It's 25 degrees in the morning and when I get in my car to warm it up for 5-10mins the heat still blows luke warm air. Tore down to heater core and nothing no leaks no drips holds propper pressure. The bottom vents have actual heat coming through them while the rear center has outside air. But then after about 10 minutes it starts up again like nothing was ever wrong. I have a 2002 745i with about 150K miles. As soon as I start slowing down and get under about 10 MPH it will start blowing cold air. This morning I started the car and checked the pressure yet again and it was still good. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Jan 17, 2009 · Hi, I have a 2000 E46 328 with auto A/C and unusual problem. Then after a short while cold air again and so on. The heater core is responsible for heating the air that passes through the vents in your car’s cabin. New Thermostat Since then, I only get hot air through the vents with the heat on when NOT driving. changed the controle valve and it stopped the random cold air but nothing has changed about blowing cold at idle. Aug 22, 2007 · I have a similar problem on my '02 330ci. When I set it to just the dash vents the outer vents (nearest the doors) blow cold, the center vents blow cold & warm. The entire driver side blows cold air (through all vents including windscreen) even when the temp is set to max. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada May 5, 2007 · It may be a bad heater valve letting hot water bypass, suppling the heater core with hot water. I'll be very clear. I am new to this forums but they do help. In the wintery months no air, hot or cold, wants to come out. Oct 10, 2009 · LOL! Thread #8 so far this season on this. There even was a recall in Germany for a faulty series of thermostats in 1998-2000 E46´s. I can start the car and let it warm up for 30 min and it will still blow cold. So, if the drivers side blows cold air but the passenger side blows warm air the AC system is low on refrigerant. M4. With AC and all vents on I get super cold air from middle and side air vents and hot air from windowand floor vents. See full list on slautoworks. Problem: The Air Conditioning is not blowing cold. shot up. Oct 14, 2019 · My 2006 325ci stopped blowing cold air a few days ago. Mar 18, 2006 · hi! having owned a few bmw's in the past i decided to go back to where i started and brought an e36 318ti compact with the M42 engine! I brought it with a hole in the block and have just got it running with a second hand lump and it runs great! Oct 19, 2017 · Hi everyone! Just bought my first e46 a 2001 330i 5spd, it's my backup car and something I hoon around in. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Jan 26, 2007 · When its below 15 degrees outside, and my car is totally warmed up, the heat blows ice cold air. Jan 23, 2017 · Up to this point, the AC had been checked for leaks because it wasn't blowing cold until about five or ten minutes after being on. My 2000 e46 (191000 miles - manual) blows out cold heat when idle but warmer air when the car is moving. HEATER keeps on BLOWING HOT AIR when CONTROLS are TURNED to BLOW COLD AIR. It still blew cold air. Jul 31, 2019 · BMW E46 WHY AC BLOWS HOT AIR | HOW TO FIX A/C 325I 330I 328I 320D 325D 318I 320I 316I 330d 323i 325xi 328xi 330xi 320xi 318xi 330CI 325CI If you have a BMW e Nov 9, 2010 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Mar 4, 2017 · As Vintage42 says: you have air in the cooling system. Make sure you have them on your car and they are not shredded or loose. com FREE DELIVERY possible on eligible purchases www. I would call it cool. I checked the thermostats, both show 60. But when I switch it to hot nothing happens. Sometimes it won't blow cold air and then I will hear the A/C engage, make that very faint hissing sound and begin to blow cold air. After doing some research, i'm thinking it may be the Heater Control Valve. Upon receiving the car, I noticed that the AC only blew slightly cold on the passenger side (left hand side) while the drivers side would only blow ambient temperature air. At the same time it blows hot ait at your feet and the defrost windshield. Old one looked new Nov 21, 2024 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Content on E46 On my bmw 318ci e46 the heater blows cold air whilst ticking over at normal temp but only heats up when i start driving. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. It makes Dec 20, 2011 · Did nothing. E46 with AIR CON Audi, BMW, Buick, Cadillac, Car, Chevy, Chrysler, E46Model Year: 2000 - 2006. It’s In Defrost Mode Jun 11, 2020 · The car goes a little longer without overheating if i blast hot air inside the car. Blocked Heater Core. Nov 20, 2012 · Hi, I am having a problem with the heaters on my 2001 E46. It's an E46 M47 A few months ago my fans stopped blowing hot air at all and now when it's coming up on the winter time it needs to get fixed ASAP. After about 40 minutes of continual use, the volume of air starts decreasing and then eventually stops blowing cold air. The water valve is a plunger valve operated by a solenoid. When the cabin gets too cool, hot engine coolant is allowed to flow into the heater core. Jan 31, 2005 · Heater blowing cold air (lost patience) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 bimmerfest. THE HCV is mounted onto the driver wheel well under the air intake bits. The blower motor is definitely working cause like I said it's blowing in both situations. The back ac vents also have cold and warm similar to dash. Any ideas what the cause may be? Jan 8, 2018 · Hey everyone. Here's what I have tried and what I know so far: - Checked all heat/AC related fuses - I did some bleeding of the cooling system. Heater is blowing cold air when idle(car fully warmed) Bmw has had ECU controlled thermostat for a long time now. rod check hot water is circulating through heater rad by feeling the inlet and outlet pipes as they come thru the bulkhead if ok it sounds like there is a control panel prob, if hot water isnt circulating make sure cooling system is Nov 2, 2011 · Result: Very cold air blows out on the floor and through the dash vents, warmer, but still cool air blows from the windscreen defrost vents. I have a suspicion that my heater valve isn't working properly due to some weird thumping it's been making and is causing not as cold air to come out of the vents. Jun 25, 2008 · turning off the lower fan and leaving the upper and middle on will stop the heat from blowing below, the air in the middle will be cold, but the defrost at the wind screen will sill be on -blowing hot across your head. There's a diagram of the hvac system for bmw on the internet. Another possible reason for a BMW car heater blowing cold air is a blocked heater core. The previous owner recently replaced the coolant thermostat and housing. Apr 30, 2008 · On a cold start, I have no heat no matter how long I let it idle or how much I rev it. I changed the Final stage resistor, checked the fuses, change the Heater Control value (w/coolant), and that fixed it. On a hot day this sucks. lower coolant hose always cold when upper coolant hose gets piping hot. Jan 8, 2014 · I have a 2008 535I Sport sedan with 100k miles on it. The temp gauge stays right in the Middle, but it blows cold Air in the morning (5:00 AM) and hot Air in the afternoon on the way home from Work (4:00 PM). this continues relentlessly for about 20 minutes and the air inside the car becomes too hot for comfort - even with the controls set to 20C. Jan 20, 2017 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I wasn't totally confident with his diagnosis, so I started reading about some possible alternative causes. As soon as I start to drive, the air coming through the vents with the heat on goes from Hot, to Cool, to Cold (it's 18 degrees F outside right now). I believe water pump and thermostat are working , heater core is getting coolant . Then randomly it will stop blowing cold again. Aug 14, 2011 · If it is the FSU, a quick /FSU in the bestlinks nets the following - What is the canonical thread on the BMW E39 FSU/FSR/Blower Motor Resistor and what is the right brand FSR to purchase () when your interior heating & air conditioning HVAC/IHKA blower motor goes haywire () () () () & how to repair your own final stage resistor including an autopsy & wiring diagram schematic () and why a Oct 2, 2024 · E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Oct 21, 2013 · My heater worked fine last winter, but this year I'm getting warm air (Not warm enough) from the passenger side vents and cold air from the driver side vents. Im driving it to the Austrian alps on Friday, so this is not ideal. You may have to repeat this a few times to get all the air out. Then crack the bleed until no more air is released. 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 comfortable in the winter. This remains constant. It would give you hot air but only when the engine is hot. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Jun 7, 2019 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. This is a common failure in our cars. My thought is the coolant doesn't circulate through the heater core fast enough at idle so high speed on the fan removes the heat too fast and you get cold Apr 25, 2015 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Aug 6, 2011 · Basically the air vents will blow hot air even when the temp is set to the lowest setting. Conversely, it gets hot way quicker if I try to run the A/C-- of which, there is ZERO cold air coming out of the car. May 6, 2010 · PART TWO: Recharge Your BMW AC System Once that is taken care of and your car is still not expelling ICE COLD air then go down to Auto Zone, Pep Boys, Walmart or any sizable local Gas Station or Auto Store and spend $15 to $30 on a can of R134a freon. Then it is normal. So, if the heater control valve is letting coolant flow through the heater radiator it heats up the air and the AC can’t cool it so that the air blows cold. com Jan 7, 2010 · Very little air coming out when the heat is on, and the dial on the vent is set to Three red dots. The cold air coming from the driver's side seems to be whatever the outside temperature is (not confirmed). Apr 1, 2014 · Current: 2003 325xi Alpine White - 105k miles Past: 2000 323i Schwarz II - 343k miles (parked) 1985 325e Bronze - R. ytvhnvt cckx hdbgm ghgt tmxxvn lcdfni nbjm mkv acdab hphij