A blend door actuator is linked to an air control door pivot found on the last drive of the unit; a plastic gear set is frequently rotated from one side to another by the electric motor.An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks. These can fail on the mechanical side as well as electrically. Replacement parts to fix the problem may be as little as a few dollars, but the labor charges to replace it may go into the hundreds. Grace G. STAFF Oct 30, 2020 0 In the unit, a door position sensor is incorporated, too, that sends information to the climate control computer. Nearly all of these failures have been traced back to using an aftermarket door actuator in the vehicle. I just noticed this knocking noise going on in my 2011 Ford Taurus, last week. The blend door actuator that went out on mine was the air inlet actuator. It is fairly simple to get to, you drop the glovebox. So, I think it is hooked to another circuit. Biography: Hi there! for more details simply search in gooogle: murgrabia’s tools. Replace the fuse. According to exploreforum.com, you can arrest this problem by looking out for Blend door actuator symptoms. replacing blend door actuator 2004 ford explorer, The 2004 Ford Explorer has 45 problems reported for blend door in hvac system makes loud clicking noise. See the diagram below. If you switch it towards heat a little bit, and the noise stops, your F-150 blend door actuator has gone out. According to exploreforum.com, you can arrest this problem by looking out for Blend door actuator symptoms. Place the heater hose on the engine outlet after taking the heater return hose off of the engine. Remember, you don’t have to be an ASE certified mechanic to determine blend door actuator symptoms in your car. So i've tracked down some creaking in my truck behind the right side console/glove box to the blend door. HVAC Blend Door Actuator - Repair or Replace If air is coming out of the wrong vents or at the wrong temperature, or if you’re hearing a strange rhythmic clicking noise from your dashboard, your TOYOTA may have a failed blend door actuator. Barrel of fun working by feel to change one. HVAC Blend Door Actuator If air is coming out of the wrong vents or at the wrong temperature, or if you’re hearing a strange rhythmic clicking noise from your dashboard, your Volvo may have a failed blend door actuator. When I start the truck the clicking noise will stop after about 5 seconds. (Page 1 of 3) Hopefully this is an issue Ford has fixed. Once you have established that it has gone bad, you can check out Amazon to purchase an OEM replacement actuator. In some cars, a door lock actuator becomes noisy and produces a squeaking or buzzing noise when the power door locks are locked or unlocked. If you are getting no air flow at all, or low air flow, you may have an issue with your fan circuit. The climate control computer receives feedback information via a door position sensor in the unit. Driving with a bad blend door actuator may not be comfortable, but it won't hurt the vehicle. My question is: How soon should I have this replaced? If you are getting the signal at each input wire to the resistor, but no voltage out, then you will also need to replace the resistor. Press question mark to learn the rest of the keyboard shortcuts. Press question mark to learn the rest of the keyboard shortcuts. Notice that full speed bypasses the resistor all together and triggers the relay to supply full 12V to the fan motor. The actuator motors may also make a noise if they've failed, but this isn't always the case. This commonly causes problems in most car’s air conditioner and heater systems. Clicking Sound. However, remember that this is not a permanent solution; you will have to repeat the process in the morning if the car remains parked over night. If you hear a repeated light clicking sound coming from under the dash, it can be a bad blend door actuator. The symptoms of a bad blend door actuator include a lack of heat or air conditioning, or failure of air to blow through some or all of the vents. Remove the heater hose off of the heater core from under the hood. When you change the temp setting in your car … This noise typically happens when you change the settings in your A/C or when you start the car, and it sounds like a knock on your door.The noise is usually caused by movement of the knob towards the heat side of the control, with the vents not providing heat, cold air comes out.You can also turn on your A/C inside an underground parking lot; adjust the temp to the hottest position. You will need a diagram of parts location and a wiring diagram to perform testing on these actuators. Just the clicking. Air Conditioning. How do you do it? Remove the heater hose off of the heater core from under the hood. So this one gets electrical again. 2. 7 Posts . On these cars I believe that the same actuator is used on the temp blend doors and recirculation air, and a different one is used on the air flow directional actuator. I've got about 1700 miles on it and I'm loving every mile; however, there's been a clicking noise coming from the center console for the last week. Anyone else have this … Press J to jump to the feed. If you hear a repeated light clicking sound coming from under the dash, it can be a bad blend door actuator. website (they approve all websites), for more info simply search in gooogle: Where to order or what to do with that? You will need a diagram of parts location and a wiring diagram to perform testing on these actuators. Similarly, how much does it cost to fix an actuator? I believe the air flow actuator is on the same side behind the glove box and would expect maybe 30 minutes to change. Remember, you don’t have to be an ASE certified mechanic to determine blend door actuator symptoms in your car. This way, a passenger can control the temperature of th… Look up near the top of the glove box door, you will see how to drop the glovebox all the way. 1 hour ago. Your email address will not be published. These can fail on the mechanical side as well as electrically. How do you do it? You’ll know you need to perform this procedure if you hear a loud, persistent POP noise whenever you switch your HVAC to “full cold”. A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit. You can try listening under the dash inside of the vehicle for any noise when turning the control from hot to cold. I changed the actuator, ( I know I changed the correct one because the noise goes away when it is unplugged.) The drivers manual does not list it so was probably forgotten. You will be testing for voltage at each of the input wires. Discussion Starter • #1 • Aug 5, 2018. I have replaced the actuator on the mode door and now the temp actuator has gone south. Often, adjusting the temperature settings ever so slightly can stop the noise temporarily. Having gone through some climate control issues with my 2005 Ford Explorer that features the 4.0l engine, I have decided to come up with an all-rounded article to help you diagnose if you have a faulty blend door actuator. The units are found in several areas around the HVAC plenum. And are there any DANGERS? Inconsistent Airflow : If the blend door is moving back and forth, then the airflow will be … This issue is characterized by a clicking or ticking noise from the dash while the unit is still working, before finally stopping. Look at the resistor in the diagram above. The clicking noise did not stop with the new actuator installed. Hello, I have the car listed above 1999 LTC and my mechanic replaced blend door actuator (OEM) and not so long after that I hear again weird noise from inside again (like farting noises). See image below. Move the control(s) that do the hot and the cold, the controls that do the air outlet selection (feet, face, etc) and hit the recirc button. what is your suggestion for the monetisation? As soon as I open a door and before I even insert the key in the ignition I hear a loud clicking noise in the dash. If blend door actuator is working when tested with the factory scan tool, then blend door itself is at fault. Click to see full answer. Another possible symptom is a clicking noise from the actuator motor. Most vehicles, this is located directly under the passenger side dash or behind the glove box. There are two of the actuators they are easily accessible from the glove box. I had a couple of the actuators go bad for my drivers blend door (that's what controls the hot/cold of the air). I just had to replace this for the 3rd time on my 2010. This clears the Automatic Tempature Control computer and it will run the calibration test automatically. I have kind of narrowed it to the actuator in heater, but cannot find the fuse in book. Ah, yes, the dreaded blend door actuators.....no problems on our 300C, but had to replace one on my '12 Challenger that was definitely bad making the woodpecker noise when you got in the car and when you turned on the A/C system or heater. The temperature of the heat in modern vehicles is regulated by a blend door controlled by an actuator. It was definitely a gear skipping noise, very loud and would be about 10 pops in a row and then stop. Depending on your vehicle’s make and model, many systems have three to four of these units which they use to control mode operation. Yes. It was intermittent and I couldn't figure out what triggered it. If you switch it towards heat a little bit, and the noise stops, your F-150 blend door actuator has gone out. To change air direction modes, the actuator receives an electrical command from the vehicle’s climate control computer.Depending on your vehicle’s make and model, many systems have three to four of these units which they use to control mode operation. Turn the ignition key to the on position. The three most common causes of clicking noise from behind the dashboard are the heater control module, lost calibration, and faulty blend door actuator motor. The truck effectively doesn’t “know” how far to turn the door. What this means is that the hot coolant is creating a circle and not going thru the heater core. Replacing the HVAC blend door actuator will stop the noise and control the temperature. Allow our technicians to service your HVAC system with genuine TOYOTA parts and factory approved tools. I bought a new one from oreilly auto parts and installed it and immediately it started making the same clicking noise. Problem is water leaking on driver floor. It can also go bad if the electric motor burns out; if you move the vent mode or temperature controls, nothing changes because the unit has become non-responsive. I have a clicking noise when you close door or trunk. Just like in my case, all you need is a willingness to get your hands dirty and the right information to this issue with ease. 11 Posts . I hope you found the information I have provided above helpful. I get this noise when I turn OFF the A/C and it lasts for about a minute. My research leads me to think it's the blend door actuator but all similar situation had only happened when other owners turned the ignition on. Your email address will not be published. Find amazing online car lease deals using the Rodo mobile app or visiting. If the fan works on high speed only, then you know that you have a bad resistor. Its like I never even changed it. I’m Jordan, chief editor of Crushtheroad.com and I’m a self-confessed automative fanatic and a professional review. This commonly causes problems in most car’s air conditioner and heater systems. Barrel of fun working by feel to change one. The symptoms of a bad blend door actuator include a lack of heat or air conditioning, or failure of air to blow through some or all of the vents. The blend door actuator is most of the time at least accessible for testing, but sometimes removal of the dash is necessary for replacement. 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