If these vents stop working, your car will begin to feel stuffy due to the lack of circulation, and you’ll have to rely on the windows to control the temperature inside the car. If there is a bad ventilation fuse in your vehicle, the blower motor will not be able to carry out its function by blowing air through the vents. The AC/heat only blows through the front windshield defrost vents and the rear seat vents in the center console. Osuagwu Solomon is a seasoned automotive technician for the past 9 years, and a technical writer. Add to compare list Add to wishlist. The "blower" and the "fan" are the same … When I installed the vent it fit just like the original. There are several pulleys in front of your car. What's the problem and how do I fix it? If your blower motor is bad, it is one of the signs to notice is your vehicle’s blower motor relay is not functioning, and you might find out that the blower motor fuse is also blown. To clean the cabin filter, you find your vehicle’s cabin filter under the passenger’s seat or under the bonnet, depending on your vehicle’s design. This might lead to a point where the air conditioner starts blowing hot air. no air flow from top vent make sure vent open.because you can manual adjust them not to blow air on you.if all is good.you have leaking vacuum hose or vacuum actuator.or air door stuck.the AC and HEATER control switch.is bad.its not allowing vacuum to open air door. FREE Shipping on orders over $25 shipped by Amazon. Should clear out nicely. A faulty blower fan can make the car ac stopped working suddenly. link to Alternator Belt Squeal After Replacement [Causes and Fixes]. It will take investigation under the dash to determine the problem. The vent was shipped and delivered in no time. In regards to the blower fuse, I checked the motor fuses just incase since I didn't know what else to do and wanted to be sure it was nothing related to the fuses. If the thumbwheel is wheeled to the right, it will make the vents fully open the vents while the opposite direction closes the vent of your vehicle. The condenser takes the heat of the refrigerant by changing it from its gaseous state to a liquid state. Controls on the center console allow the driver and their passengers to control the type and flow of air, along with its direction. All you need to do is follow the right process. Is this a good question? How to Jump AC Compressor Clutch Correctly. I dont have the AC hooked up and was wondering if that could be part of the reason. The ventilation system of your vehicle is connected with various hoses that transport fluid; if there is any damage to these hoses, the ventilation system will not be able to function properly. First off, we need to clear something up. The blower motor is a very important component in your vehicle’s ventilation system. If only one failed it might result in only the center vent problem. But I think it requires a combination of "doors" working in conjunction with each other. A few different items can cause the air to not blow out of the dash vents. #A blower motor is regulated by a switch inside the vehicle or most times by a computer. From then on, I covered each one with duct tape before I started working on it so I would not short anything out. Though you will not damage your vehicle if you decide to drive with a bad ventilation system, however, you need to be aware of the probable factors that could have caused this problem, so you know if your car just needs a quick fix or not instead of unnecessarily inconveniencing yourself and also your passengers. The most common are a blend door or a control switch. What causes dashboard air vents not working? Resolving this issue can fix the problem of car heater and ac not working in your vehicle. The air vent is a part of the HVAC (Heating, Ventilation, and Air Conditioning) system of your vehicle that allows the free flow of air in and out of your vehicle. The ventilation system of most vehicles can be opened by a manual device known as the ‘Thumbwheel.’ The thumbwheel is used to open or close vents in your vehicle to either stop or allow the flow of air inside the vehicle. #A cabin filter is found in most vehicle’s ventilation system; this filter helps to clean the air before it leaves the vents of your vehicle. Black air vent. Check here for special coupons and promotions. Few factors can affect the functionality of the blower motor like electrical problems, aging, etc. Or it could be the 2 vents are blocked due to some debris clogging the passage to these 2 vents. After spending six years in the automotive workshop, he decided to impact his knowledge to people aside his domain, and he has achieved this by centering his Automotive writing skills on REPAIRS. If little air is coming through the vents (hot or cold), then it could be because the blower motor for the fan or a switch or resistor that controls fan speed isn’t working. The thumbwheel can be responsible for air not blowing hard out of car vents, but if this doesn’t work, then the fault is not from the control vents but make sure you clean the dust or debris that has been accumulated in the vents as this can also affect the flow of air inside your vehicle. My friend and I created this website to share our knowledge, expertise, and experience with our fellow mechanics' community and car users. All four speed settings work fine on the other vents but not on the two in question. The vacuum is created by the engine while driving. Two areas allow the flow of air into your vehicle. Great Product at a Great Price. A functioning ventilation system is needed in most modern vehicles for comfortability while driving. If these intakes become blocked or clouded by debris or other substances, it will stop the flow of air through your vents. The two air conditioning vents in the middle of the front are not blowing air at the same rate as all the other vents. You can also periodically put on the fan in your vents without the AC on to completely dry your ventilation system and prevent the accumulation of debris. Continue reading this article to know of a proper guide that will help you successfully fix that air ventilation problem of yours. 99. I have a 02 Jeep Grand Cherokee, but a few month ago, air stopped blow out from dashboard no matter what position and level I put the air vent control. I recommend Set the amp motor to run at full speed, and when you do this, the amp meter is supposed to read between 8 to 15amps. Anything out you hear nothing at all, then suddenly your dashboard air vents.... 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