Intermittently blew cold/normal. Car Questions. The cooling system thermostat also may be failing to open, preventing coolant from circulating. However when I put my foot into it I will start to get heat again. Anyone have this happen? In line with Cars.com’s long-standing ethics policy, editors and reviewers don’t accept gifts or free trips from automakers. Opel made a car in Europe some years ago called the Astra which was a divil for doing this and you had to undo the reservoir and hold it high with the engine running to get the air out of the heater core. Have an '05 HL (non-limited) and we were running the heat at the low fan speed setting the other day. Checking to make sure the engine warms up properly is number one on the list. Your Check-Engine Light Is On — How Much Are Repairs Gonna Cost Ya? CSI: Car Smell Investigation, 2020 Hyundai Palisade Edition, Tips for Starting Your Car in Subzero Weather. This genuinely becomes a safety hazard because heat is needed to remove ice and fog build-up on your windshield—not to mention that extreme cold for extended periods is extremely dangerous. And it doesn't matter if its in dual mode or if the temps are separate. When the heater is blowing cold air, one or both of the hoses connecting to the heater core do not warm up. oil and fluids My car has 49000 miles. While you may be getting hot coolant/antifreeze into the heater core, the heater fan, the part that actually blows the heat into the cabin, can break or suffer an electrical short. car heater does not work, blowing cold air. The core, a type of heat exchanger, gets its heat from liquid engine coolant that circulates through it by means of heater hoses. 11. Thermostat is $600. Another possibility is that a door or diverter that is supposed to direct warm air into the interior is stuck, preventing proper airflow. It's no fun getting into your car on a frosty winter's morning only to find the car heater not blowing hot air. If you search the internet, you will find many instances in which do-it-yourselfers say they did this and tried that, but their heater still blows cold air. October 12, 2020. The cruise control doesn't work if the headlights are turned on. HEATER BLOW COLDIn this video we will explain the reasons why your car heater might blow cold air. The ventilation fans blow air over the matrix and into the car. If you let it sit and idle for a while, it will start blowing hot, but it will also sound and smell as if antifreeze is boiling over. electrical The coolant absorbs the heat from the engine, causing it to become hot. 3. In the latter case, there’s a good chance your engine will be running hot and be in danger of overheating. While idling, the heater blows but doesn't produce hot air. My 08 Milan has started to blow cold air when heat is needed. 14,143 Posts . When winter arrives, the last thing you want breaking down is your car's heater because not only is a frosty car inconvenient—it's also dangerous. Luckily, unlike many systems on the modern motor car, heating systems are more or less built around the same design as they were 20 years ago - which is ultimately a basic one. The 2016 Hyundai Tucson has 30 problems reported for a/c intermittently blows warm air. This procedure should be done any time the A/C-heater Control is replaced, or if the battery is disconnected or replaced. Slowly the defroster will sometimes defrost the front windshield and sometimes I can feel some heat on my feet when I have the heater on, but nothing is blowing. These time increments can vary in every case, of course, but basically it means that the cold air comes and goes. Customer Question. Because the heater core is usually in an inconvenient location, such as behind the dashboard, and might require the dash to be partially removed just to access it, you might want to have a pro look elsewhere first to eliminate simpler possibilities. Faulty Heater Fan. Share this conversation . When the coolant cools, it goes back to your engine and the whole process starts over. 1. Radiator fluids are topped off where they should be. service. Potential causes. JHinman06 [OP] New Member. The cold air returns shortly, and the cycle repeats itself for as long as you are driving. (Page 1 of 2) The taillights go out when the brakes are applied. Whatever it may be, consulting forums specific to your car and speaking with a mechanic should help set you on the path of being warm and happy again. Car Questions; Ford Repair; Ford F-150: My Ford F-150 heater is working intermittently. Cars.com’s Editorial department is your source for automotive news and reviews. While driving the air is cold and at times it starts blowing warm air. 19 Posts . Do not like cold so ignored. While you may be getting hot coolant/antifreeze into the heater core, the heater fan, the part that actually blows the heat into the cabin, can break or suffer an electrical short. It might blow comfortable cold air for 30 minutes and then go back to blowing warmer air. Meanwhile both passenger’s side vents are blowing cool air. December 7, 2020. If it’s really low, it might not be able to warm the heater core, even if it’s doing an adequate job of preventing engine overheating. Fan blowing but no warm air coming out the vents. Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car. Hello, I've searched around on this forum, and another forum, but didn't find exactly … DOUGDARLAND MEMBER; 2005 KIA SORENTO; 2.4L; 6 CYL; 4WD; AUTOMATIC; 130,000 MILES ; I have a few things going on. 0. I will show in this video. You may be able to find more information about this and similar content at piano.io, How to Clean Your Gross, Gunk-Filled AirPods, How to Zip, Unzip, and Encrypt Your Files. Average repair cost is $580 at 11,050 miles. What is intermittent cold air? The temp. The coolant return heater hose should be slightly cooler than the coolant supply heater hose. However, it isn’t always the heater that’s to blame. We have a 2010 honda Odyssey and we are experiencing some air conditioning problems. News & Events. I do notice that if I run the car at faster speeds I can get the air temperature to increase, but that is usually temporary, especially if I come to a stop and just idle. Chances are that if you’re getting a blast of cold air you don’t want when you turn on the vehicle’s heater or defroster, it’s a sign of the same problem: Something has gone wrong in or around the heater core — a small radiator through which a fan blows air into the cabin to keep everyone toasty. Compromised flame sensor. The A/C only blows cold air once in a great while and only for a short time. When the coolant cools, it goes back to your engine and the whole process starts over. The specifics will vary quite a deal from one vehicle to another, but most systems have some kind of blend door that changes how air flows or doesn’t flow, through the heater core. My friend thinks I am a car-god. Answered in 20 minutes by: 10/7/2011. 4. It's always good to have some extra juice on hand. The ac went out on us about 6 months ago so we had the compressor replaced. 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