How to test and fix - no air flow. A/C not blowing, blower not working, no High or Low fan speed.

Describing three most common blower motor problems and how to fix them. DIY friendly.
Be sure to also check the "5 Reasons Why Your Car Heater Is Not Working" video ( • TOP 5 REASONS why your... ) that covers - general air distribution operation principles and common problems with HVAC system.
Timestamps
00:00 - Intro
00:14 - 3 Most Common Blower Motor Problems
00:43 - 1st Scenario: Blower Motor Doesn't Work At All
01:08 - How to check Fuses and Relays
02:07 - Blower Motor Diagnosis
02:49 - Blower Motor Replacement
03:29 - 2nd Scenario: Blower Motor Only Works at Max Speed
03:51 - Blower Motor Operation Principles
05:18 - Blower Motor Resistor Replacement
06:45 - 3rd Scenario - Blower Motor Doesn't Work at High Speed
08:07 - Extra Tips
09:30 - Blower Resistor VS Blower Transistor
10:22 - Conclusion
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Disclaimer:
Due to factors beyond the control of Make It Easy Mechanic, it cannot guarantee against improper use or unauthorized modifications of this information. Make It Easy Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Make It Easy Mechanic recommends safe practices when working on vehicles and/or with tools seen or implied in this video. Due to factors beyond the control of Make It Easy Mechanic, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Make It Easy Mechanic.

[@KatelynLuvzWeezy]

So many people tried to explain the blower motor resistors and you're the only one who made sense.

[@maelo9x]

Excellent explanation!!!

[@GetRealBaby]

My grandma once told me that if something doesn't work, give it a good swift kick. Her advice never got anything not working to work, but it gave me joy to reminisce about my dear sweet grandma, running around town while kicking the shit out of everything she thought might not be working. I love you, Grandma! May you be resting in peace in the warm, loving embrace of Nature. See you soon.

[@TottoHolm]

Love your comment! Brightened my day 😆

[@ThomasMcClaughry]

I'm and Electrical Engineer, and think this is an extremely well thought-out and accurate tutorial that should apply generally for any car blower motor system. Well done!

[@CorbinBerriman]

My Blower motor works just fine , speeds and control all works 110% but the second I start my engine it turns off completely and it stops working. Why would that be, he doenst talk about it in video so thought id try you since your some engineer bloke?

[@Ivansk8erLP]

I had to leave a comment. this Guy should be called a Master Mechanic. The way he explains things makes complete 100% sense. Thank you for your detailed explanations.

[@peaceforalljohn3165]

Thank you Sooo much for detailed explanantion. You answered my big question. Master of the Mechanic's.

[@andym3603]

I had problems 1 & 2. Didn't know how to explain it to the mechanic & got charged almost $100 just for him to look. I found this video today. You did such a thorough job of explaining everything step by step & using drawings. Now I can go back & tell him what I think is going on and I wont have to keep using the term "thingy" to describe the problem. You'll definitely be getting 5 stars from this grateful mom!

[@user-ej4ip9el1w]

Did you fix the problem? Was the blower motor the problem?

[@Tylerthomasmiller84]

This is THE BEST maintenance video I've ever watched. 1000% will subscribe. Thank you so much for the time and effort you put into it!

[@malingengalo999]

I’ve already made a booking with the “aircon specialist” tomorrow but now having seen this video, I’m not waisting my money for something I can do myself. Thank you so much for sharing your knowledge with the 🌎.🙌🏽

[@disrael2101]

You're the best teacher I've seen for such topics

[@jaredhopkins5642]

This is THE BEST instructional video I've even seen! Fantastic job explaining and physically showing what to look for. Thank you. I'm now a subscriber.

[@Ffejro12256]

I LOVE how the mechanics and electrical systems are explained here. Super helpful. Thank you!! A little scared to tackle fixing this myself but willing to try it out.

[@erickarpus3254]

Dude, this one of, if not the most helpful auto video I have ever seen. Keep making these videos! This was amazing and well explained!

[@JThom-yh3ef]

I replaced my BM resistor because my a/c was acting up by not wanting to blow air in my car. When I removed the BM resistor, I found that it had corrosion which led me to believe that it was causing poor electrical flow in my a/c system. After replacing it with a new one, my a/c was working like brand new. Thanks to this video I was able to rectify the problem given that I saved up a lot of $$$ by doing myself instead taking to a mechanic to troubleshoot it. Even though the part cost me around $100, at least I avoided paying about $400 instead because of labor.

[@AlliWong]

This was a life saver, literally helped me fix my car after or hours of trying & not being successful. Thank you!

[@gasparitorumba1099]

Thank you for taking the time and energy in creating this thorough video. Learned a lot! :)

[@ckdcpa6669]

This is so great. I'm blown away by how clear and concise it was. Thank you!

[@dr.jessicalindley299]

Was that a heater joke?!?

[@joyfulspirit22]

You're Awesome You definitely explain it where a layman can understand , plus your voice is clear. One of the best videos I have ever watched on reparing a car issue. . Thank you

[@maryjomccallister9102]

Most comprehensive and easy to follow video I have found. Thank you sir for sharing your expertise.

[@user-fc7rd8zg4n]

Just changed my motor blower and fixed my ac in less than one hour only costed $100 compared to the $800 quote I was given at the shop Tysm!!

[@leyva1527]

Thank you! This really helped me locate my issue. I live in Florida and I definitely need it. You are the man!

[@disrael2101]

Very very informative video wish u would upload more often.. deserve millions of viewers really helpful

[@HiddenTreasuresEnt]

This was an incredible explanation. Thank you for the effort that you put into this

[@Zach-lj8jk]

I have no power to my resistor at all, The first two explanations were very in depth, and I was hoping you would do the same for my problem as well, but you only told me what I already knew, that I needed to test power or resistance to the switch, and I’m not sure how. Still a great video. More descriptive than anything I’ve seen so far.

[@PecosHank]

Informative. Thanks.

[@rickybobby4000]

Sweet and to the point. Great video.. you just saved me a ton of money and time. Thank you so much keep making these videos!!!!

[@TheTexasHorseman]

Great instructional video. Easy to understand and learn some basic troubleshooting and repair. Thanks!

[@sonicdarkknight]

super useful information, exactly explained what is wrong with my air con. thanks a lot, sir!

[@michaelbunn9800]

Awesome video! Very easy to understand and informative!!! Thanks

[@thermotesticles2453]

this tutorial is great. i'mma be looking at a blower motor on a transit van and wanted something along the lines of this to get a better understanding as it what i'm looking at. hopefully tomorrow it's something simple like blocked air ways or fuses. If it's the blower motor thats bad i'll just have to pick up a new one and install it which isn't hard just won't be able to fix it right away.

[@jaimegarciabrito9848]

Muchas gracias por su video, fue de gran ayuda, he resuelto mi problema de manera fácil y práctica, gracias por compartir sus conocimientos maestro.

[@victorvincz2194]

Amazing video! Thorough & covered everything I could've asked for. Thanks!

[@AlexCely]

Bravo ! what a accurate and good explanation of the all system and the regular problems

[@GetRealBaby]

Some comments suggest you hit the blower motor a few times and it may or may not come back to life. I took a small sledge hammer and gave the motor a few good whacks but all I got were bits and pieces of plastic cluttering up my floorboard, and I hate cleaning up my floorboard! A few more whacks later and I realized it wasn't going to work, so I went out and bought a new Ford Focus. Immediately solved my problem!

[@marcpower4167]

I recently went through that with my chevy cruze, "Fonziing it" only worked temporarily, after about a week of it going off an on it no longer worked, so bought a new fan blower motor.

[@michaelgones7666]

Nice video. Thanks for your excellent description of how it works

[@flossinerryday3095]

This is best a/c video on KZbin

[@bennysanchez4672]

Wow, incredibly detailed video man! Great job

[@renamaks]

The best educational video, learned a lot from this video. best car fix youtuber. Thank you, thank you, and Thank you.

[@berserkerusmc7613]

The best video I've seen concerning this issue (I'm having the last one... works on lower speeds, but not on high. 2015 subaru forester. Thanks for your hard work putting this content together. I appreciate it.

[@alliecat9688]

I know JACK DIDDLY about cars. Can't even change a tire! But i absolutely understood fully everything in this video and what's wrong with my car AND how to fix it! THANK YOU THANK YOU THANK YOU!!!

[@peaceforalljohn3165]

Thank you Sooo much for detailed explanantion. You answered my big question. Master of the Mechanic's.

[@GetRealBaby]

Before you do all that nonsense, which isn't nonsense if hitting the blower motor doesn't bring it back to life. But that's how I got my blower motor back working...I hit it several times without removing anything. On a 2004 Focus, it's right there under the glove box and easy to smack with the heel of your hand.

[@Jv615]

Haha , just. Tried smacking it too and it came back to life 😅

[@joshfuentes5235]

Just did this and it worked, thanks a ton!

[@GetRealBaby]

Yeah, I took a small sledge and hit my blower motor a few good times and all I got was a bunch of plastic cluttering up my floorboard. I guess it works for some and not for others. ha! j/k

[@4BCDQ]

you’re a genius, may god protect you at all costs 🙏🏽

[@GetRealBaby]

@@4BCDQ There is no god but I do appreciate the sentiment as far out in space as it is. Happy Holidays!

[@MrBigsax]

This is brilliant. I did this and found my motor was the problem. I hit it on the metal spline in the middle and lots of carbon dust came out. Did this 10 times, shook it, spun it and it now works goodvas new!

[@jaymondcharlie8875]

friend you gave us a great class so profesional, very well explain stept by step i apreciate it, such good skills you have as auto electric so as a teacher. Thank you so much

[@Usuario-23]

15 min work. Awesome vid thank you so much!!

[@maelo9x]

You're right on the money, no one has done a better job! 1 new sub 🤙😎

[@jaimedpcaus1]

Wow, this sounds excellent. I have to test my blower motor resistor. 😊

[@leonelvallejos5271]

Amazing video, you opened up my mind

[@sahildeepsingh2635]

Thanks so much I just fixed it by watching your video god bless u❤

[@9822Omar]

You are amazing at explaining 👍🏻👍🏻

[@BigE-qx1jb]

Thank you for this video!!! My fan works then the next day it won’t go on until I bang on the bottom of the glove box

[@rdsunsb]

Very nice explanation. Simply, simple and beautiful explanation.

[@ismailkambrath5345]

Very good

[@sam59102]

Excellent instructional video. Totally pro!

[@jameschild1321]

Perfect explanation!!!

[@davidmilligan4925]

Great simple to understand thanks

[@1EagleDave]

Great video

[@kellynickey6559]

I just went out and banged on my blower motor and now it’s working🎉🎉

[@NirmalSingh-gf8ef]

Aye bro you nailed it Simply nailed ❤

[@papidois1966]

Thank you so much for the information.

[@Crazy_Newf_101]

Great video. Thank you.

[@NVMEFOXY]

Thank you for this video only one that helped

[@louisbeeston7647]

This is exactly what I need. I have a Renault twingo and this helped me get my head around what’s wrong. Shame I have to take the dash off to goer to what I want lol

[@macknumber9]

This video is gold. I was so confused on how it works and now I have such a good understanding. Now I can diagnose using common sense and some actual testing of voltage at certain connections. If you find the problem is the blower motor is it really important to change out the resistor too? And vice versa if you find the resistor is the issue do you have to change out the blower motor too?

[@MakeItEasyMechanic]

No, I would just replace what's bad

[@brulextrulex]

Excellent!

[@nadialaraqui9674]

Thanks, I’ll try to do it tomorrow

[@NirmalSingh-gf8ef]

Oh mate awesome video Cant explained better than that Good job 👏 🎉

[@carolsisti7203]

Great video. I learned a lot actually. I’m hoping it’s my fuse or relay. I’m hoping lol

[@barch118]

THANK YOU. turns out just smacking my blower motor made it work 😂

[@quarterbells]

Best car maintenance video I’ve ever watched. So on point, clear and concise. Thank you

[@jessicathomas8640]

great tutorial legend

[@TheTiraflechas]

Love you. Solved my problem ❤️

[@pinoypeacemaker]

Nice vid. Thanks sir

[@arnavshresthrollno-132a9]

Excellent explanation, via diagram..

[@SignedOff402]

Thank you very much!

[@dannymarkgraf34]

great video, very informative. my wifes jeep grand cherokee has the climate control system, and her ac and heater will not blow at all on any setting. you get in, turn it on and nothing. turn it on the highest setting and nothing. sometimes you drive for a little bit or a long bit and it starts blowing. sometimes you hit a bump and it starts blowing. sometimes if it is not terribly hot out, it will start blowing as soon as you start the vehicle to take off, but of course on the days when it is really hot and you need it to work right away, it doesnt work for a good while. i am going to start by checking the fuse and relay as your video shows. thank you again for a great video

[@ThePaintSlayer88]

Did you ever get it figured out. I'm having the same problem with my wife's dodge Durango. I put in a new blower motor, resistor, and fuse. But it's still not blowing at all in the front vents. Only the back vents work.

[@dannymarkgraf34]

@333Greatest i replaced the blower and it fixed my problem.

[@bricolageultra]

thank you so much!!

[@marianabarajas410]

Thank you for the video, very informative! My 2015 Subaru Crosstrek blows at all speeds but does not blow when changing it to the “feet/lower” setting. Does that also have a resistor or what could it be?

[@stevemorgan1980]

Thank you

[@user-mt8ii1pd4d]

Great video. With my blower motor only on occasion it doesn't run whether heating or cooling. Then all of a sudden it starts working. I've changed resistor and blower motor. I suspect a loose connection but I don't think so. After your video I'm thinking a relay.

[@fireadept007]

You worked in reverse order.

[@marcosgoldin5623]

Nice video. Thank you. Greetings from Peru

[@whoami6045]

Thank you so much for the video. I have changed the blower motor resistor but after couple of days it has failed again. What's the story in this case?

[@jaymo444]

Great tutorial. Thank you!

[@dcsurely]

Thanks!

[@MakeItEasyMechanic]

Thank You!

[@darrelligelmund2115]

I have a 2015 Mustang whose blower works but the heat randomly blows cold, hot, nothing. At first, I thought it could be one of the actuators under the dash controlled by the temperature knob or a fuse, etc. Turned out to be a small leak in a radiator hose. This caused the overflow reservoir to empty. The low coolant sensor that monitors the overflow reservoir then caused my heater to quit working properly. Never thought it would be anything like this. Temp fix is to fill up reservoir. Long term, replace leaky hose.

[@johanpepplinkhuizen2413]

Hello thank you for this great video. My problem is still not solved. When connecting power on my car the blower goes for 10 seconds than stops. Doesn t mather number 1 .2.6.or 7. It stops after 10 seconds. After a little time is goed om 10 sec. I used a new motor a other Heather control panel and a new blow motor resister that on the blow motor connected for caching the speed. What can i do now. Hands in my heart. Johan peppl off holland

[@The12231]

I friggin love you

[@elvisechavarria8658]

My blower motor stays on only on high even after I turn the car off. On top of that I can’t change the vent location; it just stays in the main position. Not really sure what’s going on.

[@user-wi1pg5vc3u]

I have a different scenario my car, the relay works i can hear it click there is power to blower as i checked the with multi meter and blower works I checked that separately by pulling it out and put it on 12V, yet I turn fan speed to setting 1.2.3 nothing happens, could it be the resistor but then i should have fan speed on setting 3 right? Can you tell what i have missed it is a Toyota Hilux 2018. BTW this video is very good 👍👍 and easy to under stand hence i am stuck now TY.

[@aprilkidstv5358]

Thx

[@kenturbeville2022]

In my 03 ram the fan stopped blowing and I stopped and banged on the bottom of the dash and it came back on again. This has worked with several vehicles I have had. It is temporary but it is a way to have air until you can fix it.

[@paulchatman655]

Hello nice Video! I have a 2010 chevy express 1500, I have replaced the resistor addy and the blower motor. The system works on low, 2nd low, but not the 3rd then works on max after replacement. It also will cut off and then come back on. What would could that indicate failure of? This is all occurring during use of the AC. Thanks for any replies.

[@dalilahmrtn]

How do check it without the multimeter? What visuals should we look for?

[@3.7cadio4]

Hey man I replaced the blower motor and the resistor as well as the fuses and the relay and the ac is blowing at all ?

[@AF1MIDS]

Good morning my friend! Im trying to apply this diagnostic test (Check for continuity between each of the blower motor switch input terminals of the blower motor resistor and the resistor output terminal) to my vehicle (2003 DODGE CARAVAN SE). Are you able to please show me how to do this on a video? I dont understand how to do it mentally and physically. I will greatly appreciate your help.

[@raidman75]

got everything back together and all was working well...., first time I hit a bump it went back out. speeds 1-2 are not working, 3 is good and 4 bypasses the resistor so its good...gotta think there's a loose wire somewhere...any ideas ??

[@midnightclub2972]

Thanks alot bro, connector bad.

[@AmyKazanjian]

My blower motor is in the middle and only accessible by removing the pedal assembly. Nissan versa note 2014. Do you have a video explaining how to remove that and reinstall it to avoid safety issues?

[@caszx6]

I have 2006 Grand Prix replaced blower and resistor and at first didn’t work, I tried a few more times and it worked. Worked rest of the day then stopped working again.

[@santiagovalenzuela7454]

On my Chrysler 300c the ac/hc worked perfectly until we replaced a ripped coolant hose, after we replaced the hose it doesn’t blow any air. The fans turns on and it turns on every speed level but no air blown out, what can it be ? Please reply!

[@garypvt1]

I have 2007 Scion tC with this problem. It's has digital buttons for air and to turn AC on/off. All other buttons on control panel work fine and light up (like, mode selection, air flow from outside, alarm, defroster front and rear etc.) except Air and AC on/off functions. AC button doesn't light up either and no fan. So far i have tested the HTR relay (it doesn't have separate one for blower motor ) and AC fuse under the dashboard. I haven't tested the resistor thinking it should run the fan at full speed even if it is bad? Blower motor works fine when connected to 12V power. Can it be control button panel (temperature control unit) is bad though all other buttons light up and function correctly? AC system does have Freon as slight tap on L port sprays out gas. Thanks for any guidance here.

[@catfich379]

Hello sir I have a question. I watched your video about the AC blower module. My 2018 kw blower stays on as soon as key is on. Either on or acc. Does this module cause that issue also?

[@mitchellbonomi9309]

I have a 2011 Kia Sorento EX V6, and my blower motor doesn't come on intermittently, even after the designated built in delay, I checked fuse okay, changed Relay, Resister and blower motor all with the control unit in the dash, after replacing the control unit last, it seemed to work for a couple weeks, but started not working again, car starts and mid range blower is indicated on the control unit, when it doesn't work I adjust to high setting and it starts working. I am thoroughly stumped on this one.