AC/Heater Blower Resistor Keeps Burning Out? PERMANENT SOLUTION

Repeat failure with blower motor resistor? Here's a permanent solution for an AC/Heater Blower Resistor that Keeps Burning Out? This video can help most cars with fan speed control problems. Special thanks to Ryan in California for this video on how to how to fix your car’s fan speeds for good. - Merv Himself
► FIX OLD AC/HEATER BLOWER: • AC/Heater Blower Fan n...
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DISCLAIMER: Merv videos show you how we do things. I'm not telling you to do these things. I cannot guarantee this information will be used correctly by the viewer, nor am I suggesting it should be. Before attempting similar procedures, conduct extensive research and decide for yourself what the best, safest methods are. Merv's Service Secrets accepts no liability for any personal injury or property damage incurred as a result of any of the information contained in this video. Merv's Service Secrets recommends safe practices and proper protection when working on projects requiring the use of tools and dangerous substances. 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 the information contained in this video is the sole responsibility of the user. This video and all Merv's Service Secrets videos are for entertainment and informational purposes only. Always consult a professional or team of professionals for proper advice prior to attempting any do-it-yourself project, including repairs, recipes and installs that have been posted by Merv's Service Secrets and others. This video and description contains affiliate links, which means that if you click on one of the product links, we may receive a small commission, but that doesn't affect the price you pay. This helps support the channel and allows Demille to continue to make more videos like this, but more importantly it allows me to buy more cheap cigars & PBR. Thank you for the support!

[@kerryflatt5391]

Thank God I only had to watch a little over two minutes of this before pausing it and reading the comments.

[@ishaiahsmith]

Yup I got to 2:18 then I was like I bet ppl roasting mr.barefoot

[@alanpules4105]

I never laughed so hard at an auto video! The commentary had me cracking up and had to hold it in cuz wife was sleeping. I'm going to replace blower motor and gonna try that couch cushion trick. Thanks a lot Merve, you saved my behind from this gruelling summer in CA......👍😎

[@MervsServiceSecrets]

Glad you enjoyed it. Check out my Store! mervs-merch.creator-spring.com/?

[@jayviz]

This guy deserve an award just for putting up with your wise cracks! LOL Great commentary. Subscribed!

[@MervsServiceSecrets]

Welcome aboard! Thanks for subscribing. -Merv Himself

[@alphajam1]

It takes a lot of magic and hard work for several days to come up with these wisecracks when publishing this video. haha!

[@TheBikerx13yo]

Video title says permanent solution... he replaced it and mentioned it needs replaced often. So where did we miss the permanent solution?

[@MervsServiceSecrets]

I think he was showing that replacing both components is the solution. Usually, people just replace the resistor and then they have to keep replacing it over & over again. But frequently, unless you also replace the fan itself, the resistor will eventually blow again. People don't realize their fan is bad but if its not performing in an optimal way it could be messing with the circuit. Hope this helps. -Merv Himself

[@soleslayer91]

Was wondering the same thing my blower motor resistor melts every year and I've replace the blower twice but still seems to melt any ideas?

[@altonrowell8137]

He's got outhers problems.

[@Leanit]

@@MervsServiceSecrets if this is the case, would you have to buy another resistor if it blows, and buy a new fan to replace? I just put a résister in and the next day it blew, do I need a new one?

[@MervsServiceSecrets]

The kid in this video bought a resistor at one of the auto parts store sounds like to me. I also did that for the car that I fixed and it comes with a lifetime parts replacement warranty. But as other people have pointed out, you can't really call that a permanent fix. So I think the point this kid had was to not only replace the resistor, but also to pair it up with a brand new fan. Apparently that's what worked for him and it makes sense because even an old refurbished fan could be creating a drag on the system and causing that resistor to blow. so to technically do the job right: new resistor, new fan.

[@Stormy4757]

Yeah, I had this issue on my Nissan Altima, ordered the Blower Motor Resistor online and attempted to replace it myself. But after two unsuccessful attempts, not being able to get myself positioned well enough under that dang glove box, I gave in and took the part to Meineke and had them do the job. Worth every penny to me as it has gotten into the 90's here in Minnesota and I wasn't about to wait any longer. Like the guy said, you need to be a contortionist or whatever and well, I am in my 60's and not as trim as I used to be. LOL Thanks for the video though. Always want to DIY if I can.

[@MervsServiceSecrets]

Thanks for watching and I'm glad you enjoyed it. I felt that kid's pain. It's not easy to get up under there and still have room to move your hands, plus hold tools!

[@jidvelasquez7750]

@@MervsServiceSecrets I had the A/C blower motor resistor replaced 3 times and twice the motor but the resistor keep burning out on my 2000 nissan quest. Would you please tell me What can I do to fix this problem? Thank you.

[@MervsServiceSecrets]

If you replaced the motor and the resistor and it still keeps blowing, I'm not sure. However, I have heard on some cars that the generic replacements aren't as compatible with each other as the original equipment manufacturer parts which sadly cost an arm & a leg when you buy them from the stealership. Wish I had a better answer, but I hope this helps at least a little bit.

[@mdotguy]

Sometimes it's just easier to take out the passenger seat. 4 bolts and an electrical connector. Then you don't have to get your back all twisted up. Also gives an opportunity to really give the carpet a proper cleaning with the vacuum!

[@trendmassacre8423]

I live in Duluth MN, and my resistor is bad on my villager. Its negative 15 today and have to put my shopping plans on hold cause the blower fan quit working!

[@pyrogaminghound9579]

can you guys do s197 mustangs that always have melting resistor to fan and the connector in the engine bay

[@RyanSchoofDotCom]

Now Merv, let's have him try and do it as easy as 1..2..3... on a 2013 Ford Escape. 😳 ....Let's just say that Ryan in this video will be INVENTING new Cuss Words. FACT. 💯

[@carlossaavedra1893]

i have a 2005 subaru legacy 2.5I and when i place the temperature on heat, the driver side blows heat and the passenger blows cold air. i thought it was a blend door actuator but apparently subaru doesnt have a blend door actuator ? anyone have an idea?

[@jayshick214]

Buying lifetime warranty parts and replacing them every 3 months is NOT A PERMANENT FIX!

[@MervsServiceSecrets]

No, I think his point is that you must replace both the blower motor AND the resistor, otherwise a mismatched set is no good.

[@hunglikefish]

​@@MervsServiceSecrets replaced blower motor, resistor and wiring harness several times with parts from dealer. Just bought a new set today, thinks it's 6th time now. Known issue Dodge never bothered to rectify for a number of years.

[@MervsServiceSecrets]

Sorry you're going through this friend. It ticks me off when car-makers refuse to recognize a problem. There's clearly something wrong with the electrical design in those Dodges.

[@darrena.247]

Thanks. What a Fun , and informative video. Good Day

[@serenitynow007]

If your resister pack keeps blowing it’s because you are replacing your blower with a bad used Oem, a cheap advanced auto replacement with an inconsistent or high amp draw or the wiring between the switch, blower and resister is compromised. Measure the amp draw of your blower and check specs and that is a good indicator of it’s the blower itself.

[@MervsServiceSecrets]

Excellent information. Thank you!

[@serenitynow007]

@@MervsServiceSecrets 👊

[@TeamSchaeffer]

Thanks you save me the pain and suffering of watching this

[@altonrowell8137]

My thoughts exactly.

[@jeffron7]

Thank you! I replaced my re-sistor about a month ago and she has been working speeds 1-4 perfectly until now...I can't just have my Blow Jobber speed up-- full on,.. from the gayte..when I am super hotninnmy truck..ill even take my short off,, so i like to feel the blow that would start at speed 1, and then work the knob through the numbers with the exception of #2, because that just feels like, a deturdent. Anyway..just trying to get my truck to blow as I ask. So inconvenient...l m a o

[@renecuevas4128]

Just finish installing my Tacoma Resistor and the back screw wich is 11/32 was difficult to reinstall other than that it was a piece of cake...😉..tnks 10 min job took 20 cause of the Screw

[@jasonmateus924]

This is awesome, subbed

[@willsr.9154]

Mr. Merv, I keep having a replace the motor blower resistor harness because it keeps burning on me every 5 months do you have any idea why may be causing this ? Thanks in advance if you get to this question

[@MervsServiceSecrets]

That's what happened to another car I personally worked on. The only thing I can figure is that the old blower fan had a little bit of a drag to it. Just enough so it was overtaxing things. Anyway, when we finally replaced the blower fan with a new one, the resistor stopped blowing. Also ... another possiblity is that those resistors ain't all they're cracked up to be. Maybe it just took me several resistor replacements until I finally got a good one. O'reilly offers a replacement warranty and they actually honored it twice!

[@Msleelee9487]

Hey got a question the old motor had a clip on the top the new one didn’t have one I put the clip on the new one could that cause it to not cool

[@MervsServiceSecrets]

Not sure what that clip is, but it shouldn't affect cooling. The motor/fan just spins and provides airflow. The cooling actually comes from your AC compressor.

[@jayviz]

Merv's Service Secrets I think he might be talking about the lock washer that holds the fan onto the shaft. But not sure why the brand new fan wouldn't have that already in place. Anyway, regardless, you are right. The fan just makes the air move. It doesn't make the air cold

[@12vLife]

2018 Promaster city van. My van keeps blowing out the blower motor resistor, so I swapped my blower motor but still keeps blowing out the resistor on low after get it gets really hot for 10 minutes. seems to not get hot on high. Fuses are fine. Any ideas? Any way to bypass the resistor so it runs at least on high/cold only? I've got 4 lines coming in to the resistor brown, blue, black and yellow. Motor has brown and orange going in.

[@MervsServiceSecrets]

I'm not intimately familiar with that vehicle, but the basic principle is this: one of the multiple wires will have the highest resistance on it. This creates the lowest speed. Conversely, whichever wire has the lowest resistance, well that's the highest speed. Hope this makes sense. The best way I have seen to fix a scenario like yours is to make sure you get a brand new blower motor AND a brand new blower motor resistor. Sometimes when they aren't paired up perfectly, they still fry out.

[@johnwarren8735]

Your blower motor isn't positioned correct. If it's not shimmed and properly positioned it will blow your resistor and your resistor wiring.

[@ishaiahsmith]

The fact that you narrate other videos is comedy gold

[@MidnightMarrow]

People think this is bad, look at the BS you have to do with a 2012 Ford Focus. Thing was designed to cause pain and suffering from what I can tell. PoS parts and terrible servicing designs to top it off. Head unit doesn't seem so bad but apparently they are a problem part and aren't cheap so you're better off replacing it with aftermarket but you don't want to bother unless you upgrade so that ends up not being cheap either so you just go without a radio til you muster up the cash to waste on a simple creature comfort.

[@thehemiolds455]

Those foots are Harrier then the actual Sasquatch😆😂

[@stevepuyear2738]

So replacing the blower motor with the resistor permanently solves the issue of burning out resistors? I just replaced the resistor in my 2001 Dodge Dakota 3 days ago and it burned out again this morning on me.

[@MervsServiceSecrets]

Well, it can tell you it works in Mustangs because I did the same thing in one I was working on and it's still going strong nearly 2 years later. I have heard, however, that the Dodge's are finicky.

[@stevepuyear2738]

@@MervsServiceSecrets Thank you for the reply. I changed the blower motor and now it's working fine on all speed settings. I found a video a factory mechanic did where he explains why resistors keep burning out. I got lucky and did not burn out the new resistor. The blower motor just finally gave up. The vehicle has 240K miles on it, so I guess that's a pretty long life span for the original blower.

[@tammyhuskey4593]

LM#O I can soooooo relate since this is the 2nd time in 3 years my vents quit blowing and today a guaranteed to fit part didn't fit and immediately rubbed and burned out the blower motor in only a few seconds. I have to save this video for days like this. I haven't laughed this hard since I was a kid, LOL!

[@MervsServiceSecrets]

Great to hear! Check out our merch sometime! Ya might find something you like, plus I can always use another "walking billboard" to promote the channel! mervs-merch.creator-spring.com/?

[@p.richardssr.3137]

1989 dodge dakota. I want to wire my blower straight to the battery-- 1 speed would be fine for compressor on ac is failed afta-32 >>>> years. Pl3ase help

[@MervsServiceSecrets]

Gutsy! But it seems to me at the very least, you would still need a switch to break the circuit when not in use, otherwise you'll just drain your battery because the thing will be constantly running right? Depending on the specs of your vehicle, in THEORY, the fan should be spinning at highest speed when there is no resistance at all. So if your resistor is blown, your fan should be spinning with no speed control right now. If its totally dead, maybe it's the speed control switch that's bad. Worth thinking about anyway.

[@MervsServiceSecrets]

I reckon a person who knows proper safety precautions and has a little knowledge could figure a way to test your theory with a few feet of wire and some alligator clips.

[@markspangler7728]

So whats the solution to the resistor burning out all the time , take blower motor out and spin it with a drill 4 awhile??

[@MervsServiceSecrets]

Worked for me. People forget that the motor might be "dragging"

[@vanillaice5443]

You should see a carpenter about those hammer toes

[@freakdaddy23]

Holly shit dude was funny loved it

[@olveramelinda]

I’m on my third ac resistor in less than 3 months. Also replaced the fan

[@MervsServiceSecrets]

You need to make sure you are replacing it with a fan that is properly matched electrically. buying a good quality one really makes a difference. please scroll through this comment section because there are a few guys who chimed in with some really valuable insights

[@WoobVision]

So what is the permanent solution to blower resistor burnouts? Is it to buy one with a lifetime warranty? Those are usually way overpriced.

[@MervsServiceSecrets]

I think the point he was making is that you need to replace both. Not just the resistor, but also the blower itself, because the problem seems to stem from a mismatch or perhaps your old blower is working (or so you think) but creating just enough of an electrical drag on the system to screw things up.

[@jkrist7781]

I'm trying to figure out from the video what the permanent solution is to keep his resistor from burning out. All I see him do is replace with a new one.

[@MervsServiceSecrets]

The solution the kid is referring to is to replace the resistor AND the fan. Not just the resistor.

[@richardmartini9784]

Hi.... You can use that same trick with the ramp... When working under the kitchen sink...ya...??

[@MervsServiceSecrets]

That's a good idea! Or maybe just some extra padding because that kitchen sink is a real back breaker!

[@douglasrice8548]

So, I guess I missed the PERMANENT solution.

[@MervsServiceSecrets]

The permanent solution is replace both, not just the resistor like most people do. Replace both.

[@vernonwwilliams545]

Can you bypass the resistor

[@MervsServiceSecrets]

Its that resistor that provides you with different speeds. When you turn the knob to go higher, the circuit goes through less resistance, until you basically get to no, (or very little) resistance and you have then reached HIGH SPEED. If you turn the knob lower, the circuit goes through MORE resistance which is what makes the fan turn slower. Hope this helps. -Merv Himself

[@DaltonKevinM]

I replaced both and it still stopped blowing within a month 😢

[@MervsServiceSecrets]

Ugh. I know you don't want to hear this, but you might need to order both parts from a stealership. Sometimes trying to get the right match can be finicky, or so I've been told. :(

[@jasonmateus924]

ok so the permanent solution is getting a lifetime warranty resistor??

[@TheStangSlayer]

I don’t think there was a solution. Just 10 minutes or rambling and cursing.

[@shaneonews6791]

How's this a permanent fix?

[@MervsServiceSecrets]

I think I still have that kid's email addy. I'll check and get back to you.

[@Msleelee9487]

I changed out the blower and the resister and it blows now but it didn’t feel cool to me should I check the fuse?

[@jordonmartin8034]

Your blower motor resistor will not affect how cold the air is, it only regulates the fan speed.

[@wasuduta2309]

check the blinker fluids...🤣

[@wasuduta2309]

blower resistor replace...straight wire it or go to salvage yard

[@wickedlokz1849]

I replaced motor and resistor and it won't turn off 😢

[@MervsServiceSecrets]

The resistor controls the speed. Maybe it's a bad resistor?

[@CaresforAll]

I didn't see a permanent solution to the repeated resistor burning out.

[@MervsServiceSecrets]

His point was to replace them both. The fan motor AND the resistor.

[@RRay-fo6jg]

You didn't explain how to stop them from being replaced so often

[@MervsServiceSecrets]

You need to replace both. Not just one or the other. At least that's what finally helped this kid.

[@ZBrink11]

I don't get it. Whats the permanent solution? I came here hoping to learn how to repair my impossible to fund blower resistor. 🤷

[@MervsServiceSecrets]

His point was to replace the fan AND the resistor. Both of them, as opposed to just one or the other.

[@ZBrink11]

@@MervsServiceSecrets I failed to get that point until now.

[@jasonmateus924]

Californy

[@QOSQualityofSpeed]

Well I got one word for everybody, drill

[@altonrowell8137]

If the wiring is ok , then I'm sure there is a foctory recall (campain) out to fix this issue.

[@biglouATLien]

This is not permanent. This is just a routine fix. 04 silverado. Still burns up 3-4 times a year even with new blower motor. I believe it's a manufacturer defect

[@MervsServiceSecrets]

I know what you mean, but what a lot of people don't realize is that in order for the fix to be permanent , you need to replace the resistor as well as the fan blower motor. with that Mustang , many times people don't pair them up correctly and it just keeps blowing.

[@erickgarza7278]

My Silverado does the same everytime as soon as I install one it smell like burning rubber

[@MervsServiceSecrets]

Wow. I wonder if something else could be at play here. Out of curiosity, are you buying the actual manufacturer's part from a dealer or a generic replacement? Also, do you suppose water might be getting down in there and creating problems somehow?

[@biglouATLien]

The first one was from the dealer and it lasted a good bit longer than the auto parts store one but it didn't come with a lifetime warranty. I've found that it is having ac on high seems to be my problem. If I remember to turn it down halfway before i get out it never fails to turn on. I think leaving it on high is killing it. Same pin on the connector everytime. Resistor works fine it's the plug that goes on the blower motor. Water doesn't seem to be my problem. In the forums this is a problem and the only solution appears to be buy one with a lifetime and swap it out. I think next time I may remove the connector all together and just wire it right into the blower motor.

[@cybermavrik]

To repair it permanently you have to change the blower motor to a lower amperage Siemens unit

[@altonrowell8137]

Going out every 3 months.. something is Rong with this his wiring system. He's got a problem. He needs to look over his wiring and find the underlining problem.

[@MervsServiceSecrets]

Yeah but I'm pretty sure he addressed the issue. He replaced the resistor AND the fan. As opposed to using a new fan with an old resistor, or an old resistor with a new fan. He replaced them both. Makes sense to me.

[@albertag-be1eq]

Flip car over insert blower motor

[@MervsServiceSecrets]

Ha! You got it !

[@rgreeneish]

So the "permanent fix" is to buy a part with a lifetime warranty and replace it every 3 months?

[@MervsServiceSecrets]

I think the kid's point is to replace them both. Not just one or the other. That did the trick for me as well.

[@THEMFORMATION]

Dukes of hazard

[@MervsServiceSecrets]

Classic show. They don't make 'em like that anymore.

[@woowutank5576]

lol at imagine it hitting his stupid foot

[@KW-qt6df]

🤣🤣🤣👍👍

[@briangilley5093]

D I d o s !!!

[@woowutank5576]

where did the tip of your toe go

[@natehess7663]

Ford said hey let's make the shittiest vehicles known to man. Mine just blew 4th time, new motor doesn't fit had to back screws out 1/4". And now 4th speed just shut off! I hate my Ford transit truck. Great shape drives nice but built well? No way in he'll! Toyota Honda even Nissan put these engineers and there service depts to shame. Not my 1st experience. Could go on and on. By the way I bought this 9 months old 14k miles in 2017

[@MervsServiceSecrets]

Wow. Now that's what I call the unvarnished truth! We love that on this channel. Thanks for the post!

[@tobybrown1179]

Ya need to start working on trucks, much easier on the back ole son

[@westtexas806]

There losing money to you till you figure your time. Then the Chinese are getting the last laugh.

[@lukebieniek9069]

Entertaining but not helpful. I’m looking for a “ permanent solution. Not a lifetime warranty. Does anybody remember the old dodge blower resistor‘s? They were in the engine compartment. You would open the hood, and there it was. It was two screws and a plug connector, changed out in less than five minutes. And they lasted a long time. People do freeze to death in vehicles due to this absurdity.

[@MervsServiceSecrets]

Yes! That is unreal. FYI, I think his permanent fix was to stop swapping out the resistor and instead replace both the resistor AND the blower.

[@jamesjava1782]

The jokes are great. ✌️

[@TeamSchaeffer]

Wtf

[@alfredodirks3537]

That's not a permanent fix if you're doing it so often. I did both blower motor and resistor in 04 Dakota a year and a half ago and all of the sudden today it quit working and gave that same electrical burning smell.

[@davidjamison847]

My 97 s-10, no blower. Put in a new blower, worked but no speed adj. Then replaced resistor, same, no change. I ran a continuity test compared the dif, old resistor Is bad, new is good. What now, still have just one speed??? What else can it be????

[@cobra3392]

@@davidjamison847 either they bypassed the resistor all together like I did in my 2004 dodge ram 1500 just to get it to blow air until I get a new resistor in a couple hours. Or the wires are pulled out of the connector that connects to the resistor.

[@cobra3392]

@@davidjamison847 also if wires are pulled out on the back of the climate controls that will do that. The absolute last thing I would check is the climate control unit itself. Hope this helps :)

[@miken8720]

Move seat back give yourself some room

[@teresamarie648]

Is he missing the end of his toe?

[@jeff7389]

Incredibly annoying and helpless.

[@gabrielfernandez566]

Tip:get a magnetic screw gun 🤦‍♂️

[@southernautorestorationllc743]

So much for the misleading title and permanent🤐

[@MervsServiceSecrets]

The kid emailed me recently and said it's still going strong. That's about as permanent as it gets. You might have missed the point through. You are supposed to replace both the resistor AND the motor. Lots of people just do the resistor, not realizing the motor has issues and is causing it to blow. Hope this helps. - Merv Himself

[@darrellboggess4954]

so the permanent fix is to keep replacing the part every 3 months...okay

[@MervsServiceSecrets]

No sir. The kid is sayin' you need to replace BOTH parts. The blower as well as the resistor. A mismatch is a bad thing. But also, I have talked to some folks and certain makes & models seem to require factory replacement parts from the stealership in order to function reliably. Big bucks in those cases unfortunately. Thanks for the view though. Sure do hope you'll subscribe & share! -Merv Himself

[@413fishing3]

Waste of time

[@hotelmag-a-lardo]

Efing useless.