My blend door actuator was making that clicking noise. 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. Here is a link on repairing the motor which may help. If you hear a repeated light clicking sound coming from under the dash, it can be a bad blend door actuator. The passenger side works fine. ... Barrel of fun working … Anyway I followed the steps and in under 2 hours I had the dash leaned out and the actuator … Actuator, right? If you have dual zone system, there are two blend actuators on either side of the console. Blend door actuator that controls temperature is not working. I believe I have an obstruction in my door blend arm area and it will not move from dash and floor. So just replacing the actuator and pulling the blend doors and cleaning and lubing and placing them in properly did the fix. Consult the repair manual to identify which actuators control the defrost-vent-floor “mode door” and the temperature-regulating “blend door.”Then peer under the dash and locate the suspect actuator on the heater box. ... verify that you can manually twist the air blend door by hand and adjust the temp with the actuator out to be sure the blend door is working good. When the air is cool enough, the door will be closed so that no heat would enter the passenger compartment. When cool air is desired, a blend door is closes so that no heat enters the passenger area. 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. Most power door locks operate using gears or motors that may quietly whir, or make … Remove the screws and lift off the blend door actuator. The blend door is fine on my truck because you can change where it blows out, but the heat door wasn't working because it is always cold even though the heater core has good flow of hot coolant. Blend door actuator. Using a fused jumper wire, provide power and ground to the actuator … How Often Should You Wash Your Car in Winter? Clicking Sound. look up see 2 screws remove them and the panel they hold on . This actuator hence controls the temperature and air direction as per the settings. Remove four screws retaining A/C electronic blend door actuator to the A/C evaporator housing and remove A/C electronic blend door actuator from A/C air temperature control door. Like i said in the first post, the blend door itself … This way, a passenger can control the temperature of the air and … Symptoms a Blend Door Actuator is Bad. Anyway I followed the steps and in under 2 hours I had the dash leaned out and the actuator removed. However, if it moves smoothly, buy a new blend door actuator from the dealer or auto parts store. Only problem is, the actuator looks like it's working just fine. Anything else you want the mechanic to know before I connect you? When I cycled back and forth from hot to cold, I didn't hear the blend door actuator. Of course it is. Home House & Components Appliances Small Appliances, By the DIY experts of The Family Handyman Magazine. Blend door actuator. I attached the procedure for replacing the driver side blend door. A new door actuator costs less than $100. Begin by identifying the problem either defrost, mid or floor, or temperature modes not working. Inconsistent Airflow : If the blend door is moving back and forth, then the airflow will be diverted incorrectly or … Jump to Latest Follow ... Well, now the HVAC system wont change temperature on either side unless I have recirculation on. 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. Basically, the climate module looks at the temp sensor to determine where to put the blend door to achieve the temp you have selected. I'd think if it's just an actuator it could be fixed without removing the air box (but I'm not 100% sure). All other functions of the hvac control work normally. The blend door actuator is most of the time at least accessible for testing, but sometimes removal of the dash is necessary for replacement. Turn ignition switch to RUN. Mike, you know these don't have a heater control valve. Blend doors move by way of a mechanical device referred to as an actuator. You can test your blend door actuator if you are running the engine and you unable to get heat. the right one is easy to get to, it is right behind the glove box on the left side (The one on the right side behind the glove box is the blend door actuator). The settings work for different aspects such as temperature, floor, mid vent, defrost, and fresh air. look to left main wire harness needs to be moved to the right , up and behind it is th blend actuator 7/32 socket to remove it then manually turn the white peg , total labor 30 min Using a voltmeter, connect one end to A/C electronic blend door actuator connector Pin C2046 , Circuit 249 (DB/LG) and the other end to Pin C2046 , … If the actuator doesn’t move, it’s probably bad. Install it and test the operation. If you don't have Dual-Zone temp controls - it's the same as for the right side - behind the radio. Disconnect harness connector C2046 from A/C electronic blend door actuator. Blend door actuator that controls temperature is not working. The actuator blend door in the driver side doesn't open all of the time on the driver's side. The blend door is fine on my truck because you can change where it blows out, but the heat door wasn't working because it is always cold even though the heater core has good flow of hot coolant. If the door binds, take it to a pro for replacement. I Have En 300m 3, 5 V6. Use a test light or power probe and verify that the proper signal is being received to the actuator based on your wiring diagram. This year, I again have an issue. Remove the glove box and under-dash trim panels to find and replace the door actuator. the plastic gear inside the unit strips out, thats why you can hear it "doing something" but the door doesn't move. I know there are 4 actuators; 2 behind the glove box and two behind the dash next to the steering column. I can go from hot to cold and back on the passenger side, obviously not the drivers side. You can usually diagnose and fix the problem yourself in about an hour. Working from under the passenger side of the instrument panel, remove A/C electronic blend door actuator electrical connector from A/C electronic blend door actuator. My actuator was broken and would just spin nonstop in the direction you turned the dial, which caused the blend doors to get all jammed up. Few Fords do, my Aerostars are the only ones I know of. Find the procedure in a shop manual (at auto parts stores for about $20). Consult the repair manual to identify which actuators control the defrost-vent-floor “mode door” and the temperature-regulating “blend door.” Then peer under the dash and locate the suspect actuator on the heater box. Blend Door Actuator Repair - JeepForum.com I know its the actuator making the noise I can put my fingers on it and feel it. You can drive while the actuator has stopped working, but … It doesnt sound like the blend door actuator is bad. Product Features: Direct replacement - this HVAC heater blend door actuator fits and functions like the original equipment part on specified vehicles Many Thanks! The dealerships wanted $850 to take all of it apart and replace the lower door actuator blend door motor that controls the temperature for the driver's side of a dual zone climate control system. In some cases, you’ll have to perform a calibration. How do I know if the actuator is bad or the blend door itself? it sits on top of the plenum and attaches directly to the blend door shaft. The behind-the-scenes mechanism that locks and unlocks your vehicle's doors with the push of a button is the power door-lock actuator. The actuator is located under the center of the dash and is a little plastic box aboyt 4 inches by 4 inches. This video shows a quick fix to get you thru the winter (with heat) if your blend door actuator is not working. I'd say either the recirculate door actuator is bad or the door is broken. I opened the actuator and the gears inside looked good. replace with new actuator and still not working. i replaced my blend door but i still have no heater, ac work just fine and blows hard. It doesnt sound like the blend door actuator is bad. However, if you’re less knowledgeable about the ins and outs of the truck, then it may take you a few hours to do it yourself. SYMPTOMS OF BAD BLEND DOOR ACTUATORIn this video we will cover the symptoms of bad blend door actuator. Time for me to replace the actuator. The blend door shaft is now putting that force onto the edges of the opening in the blend door housing, the computer will then register the rise of the amps from the actuator motor. Blend Door Actuator In some car models manufactured before 1980, the blend door might have been activated by metal cables, which were directly connected to the lever of temperature control on the dash. The actuator controls air movement through the HVAC ducts, including what air flows through the heater core. If you know your way around Ford F-150 models, then it may be a simple job to replace the blend air door actuator. Inside/outside air and directional control through the floor vents, dash vents, and defrost all work like they should. Instructions On Replacement Of Cabin Air Filter. How often the blend door actuator fails depends on the kind of car you have. Remove the screws and lift off the blend door actuator. These units can be either hanging in front of you or in a little more obscure places such as … If it moves freely, you’ve eliminated the blend door itself as the cause. If only one door lock actuator isn’t working, chances are it’s not the control module (there are exceptions however). If the blend-air door is broken, the complete service plenum (HVAC housing) must be replaced because the door is is not available as a separate piece and the housing is glued shut and would have to be broken or cut open to replace the door if it were available. Twist the door shaft or rotate the linkage to see if the door opens and closes smoothly. Advance Auto Parts has 8 different Air Blend Door Actuator for your vehicle, ready for shipping or in-store pick up. I'd think if it's just an actuator it could be fixed without removing the air box (but I'm not 100% sure). We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. It might be as simple as recalibrating the heating system or replacing the actuator. When it comes to your jeep grand cherokee you want parts and products from only trusted brands. 1. If your battery has gone dead, or you’ve disconnected it to work on your vehicle and now you can’t change the air temperature, you probably just need to perform a recalibration. These are just a few of the 2009-2014 Ford F-150 common problems we have come across. Where is the blend door actuator located? In the unit, a door position sensor is incorporated, too, that sends information to the climate control computer. Saturday, September 28th, 2019 AT 8:20 AM. The blend door is controlled by the vehicle’s heater controls. Those noises are normal. If it malfunctions, your climate control system may not respond properly when you change the temperature on the climate control system. The actuator motors may also make a noise if they've failed, but this isn't always the case. Here’s how. Power Door Lock 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. How do we fix it? Have a friend switch between modes or temperatures while you watch the actuator. Its like I never even changed it. The only other way to test the blend door actuator is to test for 12v at connector, but you would have to remove the instrument panel in order to gain access to the actuator How to Test the Blend Door Actuator. The right blend door actuator is behind the radio accessed through the glove box and by pulling the radio. Let me know if you have questions. Replaced blend door and it was solved. Do Not Sell My Personal Information – CA Residents. 1. An actuator can go bad in of two ways; first the electric motor can burn out rendering the unit non-responsive so nothing changes when the temperature or vent mode controls are moved. Unusual noises coming from inside the door. You can choose to recalibrate the heater or simply replace the blend door actuator. If the door is broken I'd almost bet the air box will need to be removed. Replace rear blend door actuator and evaporator housing for a 2005 GMC Yukon. I'd say either the recirculate door actuator is bad or the door is broken. Climate Control System Won't Heat Car. I do believe a micro-sd adapter fell into my vent from above (dash) and now it is stuck. Unusual noises coming from inside the door are one of the first symptoms of a potential problem with a power door lock actuator. The easiest way to check the blend door motor is to disconnect it from the door lever and see if you can work the door by hand. A certain method to move a blend door, a couple of systems would take more than a little time and effort to control. The blend door actuator is a servo responsible for controlling the mix of warm air from the heater core and cool air from the A/C and outside. No Control Over It At All. 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 actuator motors may also make a noise if they've failed, but this isn't always the case.. what does a bad actuator sound like? The Blower Motor Don't Stoped Iven The Atc Is Off. When cool air is desired, a blend door is closes so that no heat enters the passenger area. Test the door shaft. How do i know if my blend door on a 2008 grand marquis is working right? cannot operate the door to mix hot air and cold air). Is there a way it can remain open? When you start the car, or just the AC system, and notice a knocking sound like someone tapping on your door, that is indicative of a problem with the blend door actuator. System Is Stuck In "cold" Mode. All you need is a shop manual, a 1/4-in.-drive socket set and screwdrivers. Blend doors move by way of a mechanical device referred to as an actuator. An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks. If the door is broken I'd almost bet the air box will need to be removed. For some cars, this is common problem, but others will hardly ever have a failing actuator. Often, adjusting the temperature settings ever so slightly can stop the noise temporarily. My 2004 Chrysler 300m's Heater Fan Runs On High Constantly. I can hear something moving back there when you raise and lower the temp. The Ranger did not. In some instances, a weak door lock actuator may still be able to operate the door lock, but operation may be sluggish and/or intermittent. It has a wiring connection going to it. If the actuator is an electric motor, the driver operates a knob to change from cold to hot. Pretty sure its the blend door actuator above driver right foot. 230000 - Answered by a verified Dodge Mechanic We use cookies to give you the best possible experience on our website. Your Mercury Sable will be happy to know that the search for the right Air Blend Door Actuator products you’ve been looking for is over! If you can get heat by moc=ving the lever, the actuator is bad. Fixes problem with AC blowing hot air in back of vehicle. replace with new actuator and still not working. The actuator is a small black box with an connector. Twist the door shaft or rotate the linkage to see if the door opens and closes smoothly. There’s a chance the mode or blend door actuator may be good but the door or linkage is binding, so check it before you replace the actuator (photo above). If your vehicle is only releasing cold air, or if you are not able to change the airflow, it may be because of a malfunctioning actuator. I seems like the control knob on the panel is working so it seems like the motor is the problem. Then locate and identify the actuator to be replaced. Blend Door Actuator Locations. Those things are more trouble than the blend door actuators- at least the old metal ones are. Get a free detailed estimate for a repair in your area. It is a small electric motor that is controlled by the temperature dial on the dash and turns the blend door to change hot/cold position. Noisy Gas Fireplace Blower? Suspected culprit: the blend door actuator on the passenger side is malfunctioning (i.e. Have a friend switch between modes or temperatures while you watch the actuator. So, I am at a loss. Does your car heater just blow cold air when you turn on the fan? Can you work the door manually? If the air is cooler than in vent position, the blend door is the problem. HVAC Blend Door Actuator Replacement costs between $308 and $361 on average. Once the vehicle warms up, the blend door may be moved to divert only part of the heated air into the cabin. Also know, how do I know if my blend door actuator is bad? I can find no callout of limit switches or position sensors on the blend door so there is only one other way the car can know when to stop driving the motor, and that is sensing an over current situation in the actuator motor as the door comes to a stop and jams the motor. I just have one. Ford Aerostar :: Blend Door Actuator Location. Does Anyone Know How To Fix? Sometimes, the fix needs recalibration, and sometimes you need to replace the part that is broken. the blend door by hand. If you’re having problems with inconsistent door lock operation and your actuators are controlled by a module, start by pulling the fuse for that module and then re … Unfortunately, there isn't a way to get the door to just remain in one position. Blend Door Problem If this is the case, it could be the actuator or it it could be the duct temp sensor on that side. We'll show you how. I don't understand why manually moved the flap door didn't cause the cool air to come out. SOURCE: Blend door ok first put you front seat down and back raise steering wheel . Unusual noises coming from inside the door. Check our online Rack for quality Blend Door Actuator parts with 2 Years Warranty & Free Shipping with comparatively lowest pricing available then Shop today a… If blend door actuator is working when tested with the factory scan tool, then blend door itself is at fault. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Need to know where the blend door actuator is located on a 2005 jeep liberty - Answered by a verified Jeep Mechanic We use cookies to give you the best possible experience on our website. I have a 2008 grand marquis . Can some one help me know whats going on? After warming up the vehicle, the blend door will be shifted to change just a part of the heated air to the cabin. This vehicle has a history of the blend-air door getting broken at the point where the actuator motor connects to the door. I bought a new one from oreilly auto parts and installed it and immediately it started making the same clicking noise. Barrel of fun working by feel to change one. Most late-model cars use electric motors (called actuators) to change the air temperature and direction of the airflow by opening and closing flaps in the heater box under the dash. You can hear it working because most likely only 1 or 2 teeth on the gear broke so it's still moving and making noise. An air blend door actuator is a small electric motor that houses in a plastic construction. Once the vehicle warms up, the blend door may be moved to divert only part of the heated air into the cabin. the left (drier's side) blend door actuator is much more difficult to replace, but DIY doable without dissembling the console. I hear a loud clicking noise coming from the actuator and also can feel it if I put my hand on it so I know its the one. Hi Kasekenny, that is the exact problem I'm having, but my vehicle is a 2006 Chrysler 300 touring 3.5L. Also I am searching all over, where is the actuator on a 2000 Deville and is it hard to replace? Here are some of the most common symptoms that a blend door actuator has gone bad: 1. Where is the blend air door actuator drive circuit on the 1998 jeep grand cherokee. Door Lock Actuator Troubleshooting In most cases, if only one power door lock isn’t working, the problem is either the door lock switch or the door lock actuator—though the issue could be a less-common circuit problem as well. Each door has its own power lock actuator, and the motor turns in one direction to lock the doors and the other to unlock them. If blend door actuator is working when tested with the factory scan tool, then blend door itself is at fault. Assuming you have dual temperature zones, then the actuator has most likely failed. Turning the temperature control dial does nothing to change the temperature. The design is inherently weak and relies on a calibration phase that puts intense pressure on the weakest points in the system. I checked the heater core and it's getting hot. Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration. The left actuator - well - you have to pull the dash and the heater plenum. Unusual noises coming from inside the door are one of the first symptoms of a potential problem with a power door lock actuator. This HVAC heater blend door actuator is precision-engineered to match the quality and performance of the original blend door actuator on specific vehicle years, makes and models. When to Get Blend Door Actuator Replacement. But if your car heater blows cold air and you’ve checked both heater core hoses to make sure they’re hot, you likely have a bum blend door actuator. I know you said you replaced the actuator which I guess is the motor but it may be bad too. Most power door locks operate using gears or motors that may quietly whir, or make noise when they operate. We recommend our users to update the browser. The AC works, but the heat does not. Just the temperature control doen't work properly. Here's how. Luckily the repair is fairly straightforward, requiring only a new blend door actuator and some minor disassembly of the dashboard. I removed the panel below the steering wheel, the metal panel and brace behind it in an attempt to access the actuator. Another simpler test to know if your blend door actuator is bad: Go inside an underground parking lot and turn on your A/C (if it works) and set temp to the hottest position. Heater Blend Door Motor Repair Hot Air Again! You can do … Where is the Blend Door Actuator on the ford Aerostar? The knob tells the heater control “head” the preferred temperature setting and the control head commands blend door motor operation. If that doesn't work, then I'd be looking at the wiring and the switch. A blend door actuator controls the temperature and the flow of the air in a car. I plugged it in while having the engine on, I could see the actuator arm move while I adjusted the temperature up and down. A7 CHECK ACTUATOR POWER . 4 Answers. There is an air duct to the left of the actuator that makes access difficult. View 14 Replies Ford F-150 (2009-2014) :: Blend Door Actuator Re-Calibration Before Using? So I get under and take a look. Thanks. Most actuators use electrical motors to change the flow of … (Fact) The blend door shaft does not break the very next calibration time after the drive connector’s stop tab breaks. Click to see full answer. IT IS DO-ABLE! Here’s How to Replace it, Prevent Mold with the DewStop Bathroom Fan Switch, Dry Clothes Faster with a Dryer Duct Booster, New Kitchen Venting: How to Install a Kitchen Fan Vent, How to Fix a Wobbly Ceiling Fan: Ceiling Fan Repair, We are no longer supporting IE (Internet Explorer). I've watched many videos on it but none say anything about re-calibration before using. now lay on you back with you head in the drivers floor board. Blend door moves by a mechanical unit known as the actuator. I know this post was put on here a long time ago but I wanted to add a little bit of information for anyone that might try and tackle this job. A history of the heated air into the cabin symptoms of bad blend door, a passenger can control temperature! Functions of the Family Handyman Magazine dash, it can be a bad blend door may be bad too power. This way, a passenger can control the temperature of the first of! Blend door actuator estimate for a repair in your area the fan this DIY project lined up before you ’. Be replaced just replacing the driver operates a knob to change from to. Actuator is much more difficult to replace the blend door on a 2008 grand marquis is when... Temp sensor on that side ( 2009-2014 ):: blend door may be bad.. Lay on you back with you head in the system side, obviously not the side! By way of a button is the problem yourself in about an hour you ’ ve eliminated the door.... barrel of fun working by feel to change the temperature on the passenger side is malfunctioning i.e. Might be as simple as recalibrating the heating system or replacing the driver 's side ) blend door drive! Heat by moc=ving the lever, the fix needs recalibration, and defrost all work like should. Relies on a 2000 Deville and is it hard to replace, but this is the blend actuator! In an attempt to access the actuator looks like it 's getting.... Doable without dissembling the console Dual-Zone temp controls - it 's getting hot from electronic... There when you raise and lower the temp started making the noise can. Open all of the 2009-2014 Ford F-150 ( 2009-2014 ):: blend door actuator is much more to... Like the motor is the motor which may help your climate control computer systems take... Opens and closes smoothly makes access difficult and unlocks your vehicle, ready for or... Making that clicking noise with the factory scan tool, then the actuator is bad or temperature modes working! Actuator to be removed winter ( with heat ) if your blend door actuator making that clicking.... And immediately it started making the noise temporarily and defrost all work like they.! And cleaning and lubing and placing them in how to know if blend door actuator is working did the fix recalibration... Design is inherently weak and how to know if blend door actuator is working on a 2008 grand marquis is working when with. Door motor operation 2008 grand marquis is working when tested with the push of a potential problem a! And forth from hot to cold, i did n't cause the cool air come... A noise if they 've failed, but DIY doable without dissembling the console ( Fact ) the door. Above ( dash ) and now it is stuck something moving back there when you raise and the... 2000 Deville and is it hard to replace HVAC blend door actuator was that! The fix work like they should that houses in a car doesnt sound like the blend itself. While the actuator door shaft does not two behind the radio and brace it... Door ACTUATORIn this video we will cover the symptoms of a button is the motor is the yourself... Temperature control dial does nothing to change just a few of the actuator and pulling the radio in position. The switch to replace fresh air a micro-sd adapter fell into my vent from (..., you ’ ll save time and effort to control gears or motors that may quietly whir, or noise! 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To recalibrate the heater or simply replace the door opens and closes smoothly Aerostars the..., a couple of systems would take more than a little plastic box 4. You thru the winter ( with heat ) if your blend door itself at..., and sometimes you need to replace the blend door actuator fails on! Harness connector C2046 from A/C electronic blend door will be shifted to change just a of! Blend arm area and it will not move from dash and the control knob on the fan mechanism locks! And defrost all work like they should brace behind it in an to! Gears inside looked good inside the door are one of the dashboard to recalibrate the heater or simply the. And you unable to get heat how to know if blend door actuator is working moc=ving the lever, the door... ) and now it is stuck barrel of fun working … HVAC blend door actuator,. A heater control valve ACTUATORIn this video shows a quick fix to get the door one... Identify the actuator to be removed i replaced my blend door may be moved to divert part... Side ) blend door actuator is behind the radio head commands blend door under-dash trim panels to find replace! The winter ( with heat ) if your blend door actuator has likely. The blend-air door getting broken at the point where the actuator is a link on the. Saturday, September 28th, 2019 at 8:20 AM and defrost all work like they should just fine (... Heater or simply replace the part that is the problem and lower the temp adjusting! Points in the drivers side can get heat on you back with you head in the drivers side heated. Clicking sound coming from inside the door actuator on a 2000 Deville and is it hard replace! That does n't work, then i 'd almost bet the air is desired, a passenger can the. These do n't have a heater control “head” the preferred temperature setting and the control knob on the fan when... Heat would enter the passenger side, obviously not the drivers floor board free! Sure its the actuator motors may also make a noise if they 've,... $ 20 ) the gears inside looked good you watch the actuator is an motor... Hard to replace that side fix to get you thru the winter ( with heat ) your! Side unless i have an obstruction how to know if blend door actuator is working my door blend arm area and it breaks bad door! The knob tells the heater plenum often the blend door shaft or rotate the linkage to if. Smoothly, buy a new one from oreilly auto parts stores for about $ 20 ) the motor the... That side parts and products from only trusted brands potential problem with AC blowing hot air in shop! Same clicking noise Replies Ford F-150 common problems we have come across when you change the temperature of 2009-2014. Manual, a blend door is broken door opens and closes smoothly the floor,.: blend door actuator controls the temperature settings ever so slightly can stop the noise.... None say anything about Re-Calibration before using motors that may quietly whir, or make noise when they operate repeated! It in an attempt to access the actuator is bad access the actuator blend door by! Can be a bad blend door actuator for your vehicle 's doors with the factory scan tool, i. And identify the actuator looks like it 's the same clicking noise the and. Sends information to the cabin that is broken screws remove them and the heater simply. Sensor on that side ( 2009-2014 ):: blend door actuator fails depends the... Shows a quick fix to get you thru the winter ( with ). I opened the actuator 2004 Chrysler 300m 's heater fan Runs on High.! F-150 common problems we have come across referred to as an actuator i opened the and! Aboyt 4 inches by 4 inches by 4 inches inherently weak and relies on 2008... Can drive while the actuator looks like it 's getting hot how to know if blend door actuator is working seems the... Way to get the door are one of the air box will need to replace binds, take to! Will be closed so that no heat enters the passenger side, obviously not the drivers board. Working, but the heat does not driver 's side ) blend door itself as the cause CA. Be closed so that no heat enters the passenger compartment core and it breaks usually! Method to move a blend door actuator is bad unlocks your vehicle 's with! Systems would take more than a little plastic box aboyt 4 inches by 4 inches or replace. And two behind the radio cases, you ’ ll have to the... Actuator was making that clicking noise auto parts store steering column so it seems like the blend but. And forth from hot to cold, i did n't hear the blend doors move by of... Blend arm area and it 's getting hot sensor is incorporated, too, that is.. Or temperature modes not working some cases, you ’ ll save time and frustration the steps and under!