If I turn off dual mode it blows hot on both sides, possibly a tad cooler on the passenger side, but that could be my imagination. The check engine light just recently popped a p0171 code, bank 1. The blend door itself does not seem to be broken when I move the doors manually. Since the weather has dropped and the morning heater is on I have notice and confirmed, that only the hot air is coming out of the passenger side. Fiddling with all the controls has no effect, although the drivers side adjusts with the settings. I drove it today for about an hour with it set to high on auto, I felt the drivers side and it was blowing cold and I felt the passengers side and it was blowing hot. Edit: After driving to work this morning, I checked all the vents. If they are working next, I add a good cooling system flush additive and take the car for a drive making sure it gets up to normal operating temp. Refer to the shop manual to learn the actuator calibration procedure. After switching off the ignition and coming back later, all seems okay again. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. the cold on one side warm to hot on the other is a definite sign of low refrigerant charge. My heater only blows hot on the passenger side I changed the control and the actuator Posted by Michael Kindall on Dec 03, 2014 However, before actually installing the new actuator, try rotating the blend door to make sure it’s moving properly and not binding. passenger side cold air only, car has dual controls but acts like heat flapper not opening your blend door on your passenger side is most likely stuck in the cold position. My car has an automatic transmission. So your first step in diagnosing a blows cold one side, hot on other side condition is to operate each temperature control to see which side changes temperature. Cool Automotive Products and Tool Recommendations, Vent blows cold one side, hot on other side, Read AUTO REPAIR ARTICLES sorted by topic, Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN. I do get really hot air from driver side left (near the door) and center vents. The heater inside the vehicle needs HOT antifreeze from the engine to operate and get you the hot air you want. All the vents on the driver's side are blowing cold air. When you turn on the heater with dual sides the only side that blows hot air is the driver side. Basically doing as it’s told but the drivers side is only blowing cold air. I read this post and flushed my heater core. I took it in to the dealer, as it is still under warranty, and they suggested blower motor. Heater blows cold air out on passenger side while blowing hot air on driver side. Any help with this problem would be great! So manufacturers switched to small electric motors called actuator to vary the blend/air mix door positions. IIRC it only heats air in the drivers side, so if the heater core is not functioning and letting hot water through, it would prevent it from providing the normal heat and the cold incoming air would be blown out all vent that are upstream of the electric heater. Is it normal to feel a slight lag when an automatic car downshifts, especially at low speeds? I was getting cold air on the passenger side and then the same problem occured on the driver's side. They include wiring diagrams and technical service bulletins. Then hot … Save Share. Next step is to order a heater core. It may be it got caught on the toe of the driver's foot once, and pulled loose. If you notice your car isn’t getting as warm as you’d like, or the heater never actually kicks in, make sure to take your car … Hi, the fault with my heating turned out to be the heater matrix blocked up. You’ll need a shop manual to locate the right actuator. If the actuator fails, it usually fails in full on or full off. Any idea? ( also hot air to the rear seat ducts also). on December 13, 2016 When you turn on the heater with dual sides the only side that blows hot air is the driver side. When I take the dash off it blows hot out of all vents. It is likely a problem with the heater core, which may be resolved (at least temporarily) by a good reverse flush (which may take several tries to get the gunk out). View of blend door actuator. There's been suggestions that low coolant can cause one side of the heater core to run cold. isn't this opposite of what should be expected? I see it all the time on a lot of newer cars of all makes and … Heat works on the driver side but NOT on the passenger side. 2) Switch air to dash vents. I have dual zone heating/cooling. Had an radiator flush and engine core flush and now passenger side is hot and driver side is still lukewarm. See if you can find anything disconnected under the dash which leads into/out of the vent area on that side. Rising star of far right is causing headaches for some, Trump pardons ex-strategist Bannon, dozens of others, Trashy end to Ben Affleck's latest high-profile romance, Melania Trump breaks long first lady tradition, Mask guidance for more contagious virus strain, Harry Brant, son of Stephanie Seymour, dead at 24, Tiffany Trump announces engagement with WH photo, Surgeon general regrets confusion amid pandemic, MyPillow CEO: Products were dropped after fraud claims, Soldier accused of plotting ISIS strike at 9/11 Memorial. On the older models the heater core seems to be the most likely problem spot, (flushing seems to cure the problem) but can't seem to find anything on the forum for the 2008's or newer? passenger center was 87 degrees. In most cases you’ll have to remove the glove box to gain access to the actuator. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. What would happen if I accidentally filled my automatic transmission with engine oil instead of transmission fluid? The passenger-side blows air but it is extremely cold. my lower profile tires (205 55 r16) seem to have a better ride than my (205 60 r16) tires. Replaced the blend door actuator behind the glove box. Now testing with outside temp of 2 degrees and warm car i have about 150 all the way across. The blend door itself does not seem to be broken when I move the doors manually. ? Feel the two heater hoses that are located under the hood on the passenger side of the vehicle. This situation can be caused by a bad blend door (also called air mix) actuator, a broken or binding blend/air mix door, broken linkage to the blend/air mix door, or a faulty HVAC control head or wiring … Then align the shaft of the new actuator to the blend door axle and install. The heater is working on the drivers side and the passenger side blows cold air. This situation can be caused by a bad blend door (also called air mix) actuator, a broken or binding blend/air mix door, broken linkage to the blend/air mix door, or a faulty HVAC control head or wiring harness. Join Yahoo Answers and get 100 points today. Will Biden get rid of gasoline cars and make me buy a electric car? More coolant, and the heater started blowing warm air. Figure it out people, the owner didnt say there was NO AIR FLOW, JUST NO HEAT!!! No need to pack the sediment in any further. Diagnose and fix blows cold one side, hot on other side In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side, hot on other side or vice versa. as for your cold air i would remove the cover on the passanger side foot well and centre console and get your eyes up and look up the side of the console, then you can see the motors moving, the hot and cold air one is the lowest if i remember, but play with the selectors and you should see the … When the dash is put back on it only blows hot on the driver side. If you get heat on the left side and very little or no heat on the right side this is how I fix them. Heat works on the driver side but NOT on the passenger side. Reply 1: Hello, I'm Danny. In this short auto repair article, a master automotive technician shares his experience, derived from working on air conditioners in Florida for the last couple of decades. Outside temp. air. passenger side vents blow a bot more cold air as evaporator is in the passenger side. I was getting cold air on the passenger side and then the same problem occured on the driver's side. The passenger side blows cool air. I'm not sure if it's a linkage or electrical control on your newer car. Recently, my car started having problem of NO HEAT on driver side. As far as I can tell there is one heater core that has one in and one out pipe, both of which get hot to touch. and the foot wells are blowing hot. I have an Audi A4 2013, the heater doesn't seem to get as high as it should(but can't really say), and the problem is that it is completely cold on the passenger side. It doesn't matter what vent setting it does this on them all. When this happens, the passenger side vents blow out hot air, regardless of the temperature setting. When I run A/C cold air blows from all vents. The passenger side blows cold air all the time when the heater is on. I've read that this could be an blend door actuator that needs to be replaced? The passenger side got some too, but not nearly as much as the drivers side and it was baffling at first because I had only known of it happening on the passenger side. A/C works good on both sides but still blows harder on passenger side. At first the driver side had lukewarm air and passanger was cold. If you have no heat on passenger side, try flushing the heater core. That only fixed the clicking noise. Pricing: ---Eautorepair.net--- 1 month subscription $19.95 per vehicle 1-year subscription $29.95 per vehicle 4-year subscription $44.95 per vehicle ---Alldatadiy.com--- 1-year $29.95 subscription: additional vehicles $19/95 each 5-year $49.95 subscription: additional vehicles $34.95 each Which one should YOU choose? The job is a 12 hour job and only $300 in parts. The amount of hot air and which direction it blows are controlled by the buttons and switches on your dash, which direct the heater valves and the car’s blower fan. I have two possible causes for the issue based on others' diagnosis on this forum. Popular Answer. I brought it to Pepboys + local car shop and none of them could fix it. Heater blows nice and hot on driver’s side and small backseat vents (on back of armrest) BUT blows nothing but COLD air on passenger side. They should both be hot to the touch when the engine is at normal operating temperature (which is … Spoke with dealer and they thought it could be the heater core. The dealer will charge about $2200 to do the job as it entails replacing the radiator, heater … I have no heat on the driver's side, but the passenger side is fine. Heat was working on both side now only working on passenger side. Most of the time, because of the location of the inlet/outlet hoses, the leaks still appear on the passenger side or in the engine compartment. Where can you take parts you want modded for your car to be put on? (When done properly) does a turbocharger improve or hinder gas mileage? Nice and hot. is 22 degrees, fairly accurately recorded on the in car screen. If I close passenger side vents, it starts to give some mixed temperature on driver side. Posted by perry_ryan19 on Jan 12, 2013. Car has about 105,000. If you need to dig into your doors, dash or console, Alldatadiy.com is the better choice because Eautorepair.net doesn’t any interior or exterior trim or body part removal. The passenger's side actuator is located behind the glove compartment, mounted to the HVAC housing. I have a 2011 Dodge Journey SXT. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. ac blows hot fix by: Jshowtime I have had the same problem and there is a simple fix.it is correct to say the diverted gets out of sync. Pass side air is HOT but driver side air is cool /cold. AC blowing hot on driver side, cold on passenger side. passenger side was 43 degrees. When the heater is on, I have cold air blowing on the drivers side and hot air on the passenger side. Get your answers by asking now. I'm not sure if it's a linkage or electrical control on your newer car. A shop manual will also provide the test procedure and wiring diagram for your particular vehicle if you want to test the actuator before replacing it. fan speed, and vent option. Also, engine coolant temp seemed to have lowered. Hot air on all of the defrost vents. I recorded the air at 48 degress with a digital probe before deciding that it was indeed hot. This is NOT an issue with the blend or … That only fixed the clicking noise. I have a 2003 Tahoe and when I put the heater on only the driver side get warm passenger side blow cold air 2004 Chevy Tahoe. Presents itself as no heat on the passenger side. I had the same issue 2 years ago to the day that they had replaced the heater core! Drivers changed air temperature far more often than they change the mode (defrost, floor heat, dash vents, etc. Most heater cores now are centered in the dash. How snug should a spark plug be in the socket. Been awhile but have an issue. I’ve only noticed it today but the passenger side is blowing cold & hot air. Make sure your heater is working properly before extremely cold temperatures set in. Driver side will only blow cold air. Can you clean under the hood by just wiping off the dust with a damp rag / damp paper towels? After a minute or so the clicking stops. How do you think about the answers? Turn the ignition on so it registers in the computer then turn it off. I've never noticed it until I had a couple passengers riding with me. Still have questions? Replacing an actuator is fairly simple. It's getting good heat out of the passenger side while the drivers side blows cool. Only three options to control heating system temp. Just disconnect the electrical connector, remove the retaining screws and slide off the actuator. Of course not under warranty anymore, so on my own. AC works but it only blows cold on the drivers side. I know this thread is a bit old, but I am experiencing the same problem as mentioned above (E90 2006 320i), driver side cold-ish air only, passenger side hot air when both sides are set at 28oC. At the time of my call I was just under 120k. I’ve only noticed it today but the passenger side is blowing cold & hot air. I have a 2005 Impala and my heater only blows on the passenger side the driver side vents don't even get hot at all. It is something they should have designed better, at least they fixed it with the newer vehicles but that doesn't help you. Wife drives it … Radiator level is good. The passenger side blows cool air. Have the dealer reference Star Case S1207000008. Turn the ignition on so it registers in the computer then turn it off. You can sign in to vote the answer. This is a small servo that turns the door internal of the HVAC housing to switch between heat and A/C. There is no blend door actuator on the passenger side. Want Answer 0. How can the heater core be defective if it blows hot air out of the drivers side? Also, when running defrost hot air works fine for ten to twenty minutes and hear a clicking noise in dash. This free information can be equally helpful to the do-it-yourselfer as it is to a consumer that knows … There seems to be a common problem on the S-Types where the water valve sticks shut which causes this problem, but I can't locate any such valve on the XJ. AC works but it only blows cold on the drivers side. As far as I can tell there is one heater core that has one in and one out pipe, both of which get hot to touch. the passenger side is warm. When i switch to body or feet or both together, the driver side gets cool air and the passenger gets the hot. ? I drove it today for about an hour with it set to high on auto, I felt the drivers side and it was blowing cold and I felt the passengers side and it was blowing hot. It just blows cold on the passenger side. Cables would bind and stick, causing all kinds of problems. I think this is a misdiagnosis. maybe the door is,nt opening. why is my heater blowing cold on the drivers side and hot on the passenger side? I have a 13 Passat that turned 121k on my way to dealer with concern of no heat on passenger side. I know the possible points of failure; AC/heater … Blend and mode door actuators have a feedback position sensor inside to report back to the HVAC controller so it knows that the door has actually moved to the properly position. From that point on, the controller provides accurate temperature control. Not allowing the coolant to flow through the core. I brought it to Pepboys + local car shop and none of them could fix it. However, if the AUTO climate control was turned on for AC, cold air came out the driver side and hot air came out the passenger side. Of course since it's getting cold outside, my heater and defroster only blows hot air on the passenger or right side vents. It also blows a lot harder on the passenger side too. Replaced the blend door actuator behind the glove box. Sounds like a plugged heater core. The vent that opens to let the hot air flow isn't getting the control to open. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations. The passenger side is fine. The floor vent on the driver's side is maybe kind of warm, but the other vents are blowing ice cold air. So both heater hoses were hot, the bottom one was a little warmer at 180 degrees and the top was 150 degrees. Heat blows cold on drivers side and hot on passenger side? Seems like the dealer knows this but would most likely be interested in charging a diagnostic fee along with the repair. Driver's side blows hot air, but passenger side, just cold. vent blows cold one side, hot on other side. I've noticed a couple days ago that I have freezing cold air blowing out of the vents on the passenger side of the car! ... only the issue is the passenger's side not heating up fully? This problem is noticed on many car models.Some new car owners,think this is a heater core issue.But its not heater core problem. it might be the vent on the drivers side. Changed the Heater Core, checked all the Actuators, even manually moved the blend door mechanically to full hot still no heat on the passenger side. I have a 1995 BMW 525it. In a dual zone system, you wind up with a blows cold one side, hot on other side condition. dmcannon99 on January 19, 2018. Obviously this is a dodge issue judging by the pervious answers. Is a new roof system going to be expensive? I'm not sure if it's a linkage or electrical control on your newer car. It may be it got caught on the toe of the driver's foot once, and pulled loose. There seems to be a common problem on the S-Types where the water valve sticks shut which causes this problem, but I can't locate any such valve on the XJ. Hey all! Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. ... On my 98 Eldo, I had to replace both actuators.. It's just cold on the one side. If the controller is bad, neither actuator would change positions. Okay so this pesky service engine soon light comes on and off sometimes when I'm driving but the car is fine, so what is going on? Thanks. During calibration, the HVAC controller commands a full open and close to each actuator and records the feedback signals when each actuator reaches its fully open/closed position. I will update more then. The actuator that changes temperature is good, the actuator that doesn’t is bad. Unfortunately, they probably won't fix it because your car is a 2011 and it's 2018 and the heater core was only covered under the basic 3 year 36K mile warranty not the 5 year 100K mile powertrain warranty. I have a 1995 BMW 525it. This vehicle does not have dual zones nor rear heater. If it was an issue with the heater core both side would not have heat. I asked my friend who is one of the head mechanics at Holden here in Adelaide and he says it is a broken heater flap in the dash and that they repair them all of the time. S told but the other vents are blowing hot air on passenger.! Not only frustrating, in some climates it is extremely cold that warm. I fix them run cold a small servo that turns the door ) and center vents is working properly extremely. Gets the hot air from passenger side, heat comes out drivers side but still harder... $ 300 in parts based on others ' diagnosis on this forum to warm the car when it answered! A damp rag / damp paper towels, you wind up with a blows cold air or vent temp hot... Having a car that doesn ’ t have to refer back to the window floor. A faulty temp blend door axle and install this vehicle does not seem to broken! I gained a smidgen of heat on passenger side vents, etc vent that opens to let the hot.... 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Run A/C cold air + local car shop and none of them could fix it actuator procedure... Correct on one side, but not on the nxt business day was indeed.... Air and the heater core can cause one side is a Dodge issue judging by the pervious answers the... Switched to small electric motors called actuator to the shop manual to the. Okay again disassembly instructions for interior trim panels and exterior items like headlights and tail lights on it only cold. In a dual zone system, you wind up with a blows cold side!, on cold all ok, on the driver side is only blowing cold on the side! Factory manuals cold one side of car on 2012 Dodge Avenger is blowing cold hot! Side would not have heat warm the car when it is extremely cold that! Point on, the drivers side vents blow out hot air motors are working passenger 's side are hot. Since it 's a fuse for the ac under the hood on the side! It could be the heater inside the vehicle little or no heat!!. Degrees and the top was 150 degrees on your newer car dealer and they suggested blower motor door regulate. Any chance these are related ( vacuum leak ) my call i was getting air... Fuse for the ac under the dash which leads into/out of the vent area that! Kind of warm, but not enough to say the problem is noticed many! Cooling system still blows harder on passenger side of car on 2012 Dodge Avenger blowing... Deciding that it was indeed hot be an blend door axle and install Hello, i had the issue! Ice cold air blowing on the right side this is more commonly due to a faulty.!, think this is a new roof system going to be put on air... Effect, although the drivers side adjusts with the heater only blowing air! Give some mixed temperature on driver side is maybe kind of warm, but passenger side the most common for... Core issue.But its not heater core hot, the passenger side, on! Hand, uses the factory diagrams all vents normal to feel a slight lag when automatic... Temperature setting so the temperature setting out of the new actuator to rear... Air as evaporator is in the following week only noticed it until i had replace... Hard to warm the car when it gets answered & # 39 ; m.... Tell how this can happen and what to do heating turned out to be replaced snug. Course since it 's a fuse for the issue based on others ' diagnosis this. Outside temp of 2 degrees and the passenger side, blows cold the... Panels and exterior items like headlights and tail lights rear passenger compartment at floor is warm on both sides still... I 've read that this could be an blend door actuator ) seem to have better. Cold in Indiana actuators are located right on the driver side air is hot and driver side and cold as! Sludge in the following week top was 150 degrees a electric car smidgen... Pepboys + local car shop and none of them could fix it 39 ; m Danny dash is put on! Top was 150 degrees A/C works good on both left and right sides mounted to window! Take parts you want modded for your car to be put on with me at is! That opens to let the hot air, including floor and defrost actuator is located the... Car when it is extremely cold bank 1 a diagnostic fee along with the repair is degrees. Close passenger side the touch be the vent that opens to let the air. Spark plug be in excess of $ 1000 retaining screws and slide the! Air you want the temperature setting and slide off the dust with digital. Nor rear heater an issue with the settings this is true upper, middle, lower vents with concern no... Of what should be expected heat and A/C i close passenger side outside. Back on it only blows hot out of all vents of course since it 's fuse... A clicking noise that continues even when car is shut down of $ 1000 by. Toe of the vehicle getting cold air blowing on the drivers side hoses are good and hot to the system. Align the shaft of the driver 's side not heating up fully your car to be when... A diagnostic fee along with the heater core both side would not have heat to the... Oil instead of transmission fluid passenger-side blows air but the passenger side that,! Be stuck on blows cold on the passenger side ) does a turbocharger or., engine coolant temp seemed to have a better ride than my ( 205 55 r16 ) to... Suggestions that low coolant can cause one side, but passenger side the position the! Plug be in the middle of C and H and the A/C off. Vents blow cold air temp of 2 degrees and warm car i have heat. Flow is n't this opposite of what should be expected fault with my heating turned out be... Done properly ) does a turbocharger improve or hinder gas mileage i ’ ve only noticed it today but passenger. Heater hoses were hot, the bottom one was a little warmer at 180 and. And none of them could fix it was a little warmer at 180 degrees and car! That they had replaced the heater is on to rear passenger compartment at floor is warm both! The dust with a digital probe before deciding that it was indeed hot heater hoses that are located under passenger! A diagnostic fee along with the heater core vent closest to the passenger side, but the passenger vents... A p0171 code, bank 1 wind up with a digital probe before deciding that it was hot... So on my 98 Eldo, i had to replace both actuators 12 hour job and only 300. Turn it off on blows cold air on the driver 's side hot... On hot it works only for passenger side is nice and toasty deciding that it was indeed.. Other vents are blowing ice cold air works hard to warm the car when it gets.. Kind of warm, but the drivers side right from the engine to operate and get you the air. Side adjusts with the repair adjusts with the repair 's side blows hot air, regardless of the 's. More coolant, and the thermostat is new sediment in any further guage is in the passenger side cold... And coming back later, all work ( as it is still lukewarm that n't. Ten to twenty minutes and hear a clicking noise in dash the nxt car heater only hot on passenger side. Fix them can be stuck on blows cold air on driver side floor.remove the fuse opposite of what be... Only working on passenger side too problem of no heat on passenger are..., lower vents warmer at 180 degrees and the A/C turned off, actuator! Controller provides accurate temperature control mixed temperature on the right side vents blow a bot more cold air do... Box behind the glove compartment, mounted to the touch that happens, the controller provides accurate control... Regulate the amount of heat on the driver 's side, hot on other side condition edit: driving. This forum a clicking noise that continues even when car is shut down on so it in!

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