Honda Civic 2003-2012 AC FUSE and Relay is causing AC shut down problem

Due to factors beyond the control of RB The Mechanic, it cannot guarantee against unauthorized modifications of this information. RB The Mechanic assumes no liability for property damages or injury incurred as a result of any of the information contained in this video. RB The Mechanic recommends to follow safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, chemicals, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of RB The Mechanic, no information contained in this video shall create any express 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 the information contained in this video is the sole responsibility of the user and not RB The Mechanic
#hondacivic #civc #civicacfuse #civicacrelay #ac #relay #acrelay #acfuse #acdontwork #acblowshot #accompressorrelay #accompressorfuse

[@pavanmari7453]

Thank you very much for this. Here is the Honda part number 39794-SDA-A05 Mitsuba Relay. $20 part at Honda Dealership parts store. Installed it myself and AC runs cool. Thank you brother!

[@RBTheMechanic]

Niceee ! I’m glad this worked out for u!!!!! Good job giving this a try is worth it!!! 99% cars I get honda or Toyota most like this is what the fault is!!! Anyways good job my friend! No every has the part number and cost!!!!

[@pavanmari7453]

Thank you very much. FYI if the AC relay is factory installed Omron 180 Ohm its gonna go bad. Better replace it with the new part. Honda has issued service bulletin # 11-031

[@rickma6363]

So this Mitsuba relay will replace the Omron 12vdc 180ohm relay that came with the civic? The AC in my 2009 civic just went out last week. Just blows warm air so the fan and fuse are fine. Hopefully it just this relay.

[@RBTheMechanic]

@@rickma6363 yeah best bet and try is the relay hopefully ur kicked out.

[@rickma6363]

@@RBTheMechanic yeah, bought the new one from a Honda Dealership. $45 cdn. Worked just fine, thanks, keep up the great work!

[@Vamsigaadu]

Your video saved me some serious money. Last summer had the AC compressor replaced and AC mode motor changed for $1200. 8 months later, AC stopped working again. What?? Saw ur video and man! relay was the issue. Thanks a ton !!

[@Giardintek]

Scummy repair shops must hate you RB! LoL You take away their markups on expensive compressor replacements.. You are a lifesaver for many...

[@RBTheMechanic]

Yeah it’s the correct thing to do.

[@OrganicGreens]

mg clutch is actually fuse #20 7.5 amps. #19 is th FI Main at 15 amps

[@billmurray34]

Thank You Sir. My Ac compressor stop working. My pressures were good. Jumping it the A/c compressor kicked on. All fuses checked out. Could not locate A/c relay. Your video nailed it. I swapped relays and AC works. Ordered 2 relays 1 for a spare. Thank You so much for the Video

[@RBTheMechanic]

I’m glad u found this video useful and fixed ur cars ac. !!! This is common failure will happne again in few years relays always fail

[@sundokim5868]

amazing, my honda civic 2009 now ac on~~~ from not blowing____Thank you for this video. ~~~

[@RBTheMechanic]

Nice. !!!

[@savang1931]

Thank God for your good advice may u be blessed

[@RBTheMechanic]

Thank u

[@AT-fi8vy]

You saved me $800, thank you!

[@RBTheMechanic]

Good job!!! Quick and easy fix!

[@cre8tivegarage157]

ac is a must in the daily

[@PaulHayman-tq5kb]

Very good way to digitise The problem mech here in Australia they will keep making the same mistakes every day

[@RBTheMechanic]

Yup

[@simplifiedautomotive7528]

Thank you Mate ! You really helped me . ❤️ 4m 🇮🇳

[@RBTheMechanic]

Welcome!

[@m.i.g5362]

Its ok my brother i appreciate your help !! I checked blue & red wire getting 12.6v the white & red wire getting 13.4v black wire ground is good !! Blue wire there is no power at all !! And i check all this with car on !! Car Power off only white & green Stays powered!

[@RBTheMechanic]

M.I.G ok let’s go to ac clutch relay if ur able to look under and find the red wire it should have ground

[@m.i.g5362]

@@RBTheMechanic you know i just noticed one thing when i check ground with my probe 3 i dont get a beep that it have ground but when i check with my multimeter i get ground when im checking voltage on the other terminal

[@m.i.g5362]

And that the relay side im talking about when i take relay and check

[@RBTheMechanic]

M.I.G I will check that tomorrow

[@RBTheMechanic]

M.I.G did u discover the issue I haven’t had time broke a finger I can make a small video on wiring diagram if you like

[@romuloromero2268]

Thanks for this great video! Unfortunately for me, I replaced the relay and checked the fuse and the clutch still won’t engage. I noticed that it spins freely when I try to turn it by hand with the engine off. Any other suggestions before I go to the mechanic? Thank you!

[@RBTheMechanic]

Well it’s normal for it to spin freely but check ur ac Freon pressure system with no come to life without pressure

[@1991windsor]

I have a 2011 Civic that I've had AC issues with and you would think Honda would fix the issue by now, but my friend has a 2016 Civic and she has had to have the AC system replaced 2 times under warranty in her car. That's ridiculous!

[@RBTheMechanic]

Yeah this civic ac compressor goes

[@Hephoestus69]

I just did mines. Thanks bro it works again 👏🏾👏🏾👏🏾

[@divagirl1234567890]

Hi I have a 2012 Honda Civic lx, my ac and heater work fine at night time but in the day time the ac blows but only hot air even though I’ll have it at full blast on the coolest setting. How can I fix

[@vlonevro1738]

did u figure out ? i’m struggling with this rn

[@juniorperalta4449]

Hey man, thank you for sharing your knowledge… I only have a quick question about the fuse number… you said number 19 but it seems to me like number 19 is the “FI MAIN” whatever that is and 20 for the “MG CLUTCH” which is the one you said belongs to the AC COMPRESOR, I’m a little confused can you please share with me your thoughts? Thanks again for sharing!!! 🙏

[@RBTheMechanic]

MG a clutch is for the ac compressor

[@tropicalstorm339]

​@@RBTheMechanicHello. My sister has a 2003 Honda Civic LX and the AC is always on. As soon as you turn the key to ON position, the AC compressor comes on even if the fan switch and AC button are in OFF position. I had replaced both the engine coolant temperature sensor and the radiator fan switch but the problem persists. I have checked the relays by switching them around and they're working fine. #1 What could be causing the AC compressor to stay on? #2 If I remove the AC fuse or AC relay (clutch or compressor or both) would it give me a problem? I don't mind not having the AC right now since it's starting to get cold and it's not really needed. It's an extra car so it won't be driven when it's raining, so fogging should not be an issue.

[@RBTheMechanic]

@@tropicalstorm339 maybe maybe some one by passed the circuit u might want to check the relay if it’s not by passed then replace the relay it could be stuck on

[@Tintoycar]

When we go on vacation, iI have a spare one :-), but when does the relay ever break down 🙂 Greetings from Belgium.

[@laaaaaaaaaaaaaaaa222]

I have a 2008 Honda Civic LX, and am trying to determine the right a/c relay for my vehicle - do you have a suggestion? (Thank you so much for your video! I'm hopeful this can help my a/c start to work again!)

[@RBTheMechanic]

Yes well u can get any relay from any part store just tell them u want fog light relay for honda civic it’s the same size however if u want it to last long time then go to honda parts department get original it’s about $45. Let me know if this answers ur question

[@joshgutierrez7380]

The 7.5 fuse above the 15 is the a/c clutch fuse.

[@mfahad]

I have a 2010 Honda odyssey touring and there's a 30 amp fuse thats keep going out and the one of AC fans stops working. I have replaced fuse several times but it still blows out. What could be the issue?

[@RBTheMechanic]

Read my other msg

[@francistham9928]

Great video ,thanks. If this is a common problem should I replace the AC relay unit as preventative maintenance and never have this happen to my Civic which has 96k miles.

[@RBTheMechanic]

I would replace it since it did its job already so u don’t come across the problem

[@mr.universe740]

My 2011 civic's ac just went out at 115k, hoping it's the problem this video addresses.

[@francistham9928]

@@mr.universe740 test it, if it is, then you are in luck. Very easy and cheap to correct the problem.

[@fivefalls]

Plenty of Freon in my 2007 Honda CR-V but on a hot day the a/c will stop cooling after about 45 minutes. Then, 20 minutes later it will will resume cooling. What is going on?

[@RBTheMechanic]

How did u determin? Plenty Freon? Still to me I wouldn’t make a judgment without reservicing the system also if u want swap a relay it could heat up cut off for a bit then come back on

[@edgardocruz6897]

2008 Honda Civic. Ac turns on but the front vents won’t blow the air out but I can hear it running and the inside getting cold

[@noggodtv]

It’s the motor that’s on the passenger side

[@bryanpereira53]

What about the AC recirculating button? My button stopped working a while ago on my Civic. All the other buttons work on my control panel - but that one

[@RBTheMechanic]

Well it might be bad contorl panel

[@Bill_Me]

Thank You.

[@704kj7]

2010 civic, my ac works for bout 10-15 minutes then nothing but warm air, some days it works after I turn it back on some days it doesn’t, I also noticed it worked completely fine Will stopped and it I turn my car on while the ac is running it seems like it wants to die any help?

[@RBTheMechanic]

I replied on ur other comment

[@osoloco1466]

If the fuse is bad would it drain my car battery? I have a 2009 Honda civic and I had to unplug the ac because when I turn it on it will drain the battery

[@RBTheMechanic]

No cuz it will cut the power off

[@ellisonjusino305]

RB, hoping youll see this and wondering if you can help. I have 12 civic hybrid and as of days ago, its no longer blowing out cold air. About 132k miles. Maybe about a month ago i noticed it seemed to stop blowing cold air for a bit and then went back to normal. I cant hit the recirculation button/turn it on at all. Everything else works normal as far as the ac/defroster etc-its just not blowing hot air. I checked the ac clutch fuse and it didnt seem burbed out. Replaced it anyways and it didnt change anything. I dont see the ac compressor clutch really engaging at all. I checked the pressure in the Ac/freon line and it showed as normal/full, so im not inclined to believe the freon is low. Neither the ac compressor engages, nor do the radiator fans turn on either. Ill be testing/swapping the compressor relay in the morning. Any idea what it might be based off the above? Still trying to diagnose it myself before possibly taking it to a shop. I see no residue or anywhere on the lines so im NOT inclined to believe its a leak and thats the FIRST things shops told me they wanna check which is $300 to $400 and i have NO reason to beliebe verifying a leak is necessary at all. Hoping like hell you'll see this and can give any advice.

[@RBTheMechanic]

The hybrid is diffrent story did u can the car in HVAC moduel for codes

[@ellisonjusino305]

@@RBTheMechanic I got an obd2 scanner but it didn't put out anything, or at least nothing new. Everything seemed normal. Might require a better/more specific check up? I was thinking it was either the ac compressor legit went bad or it's possibly the clutch coil or a temperature sensor busted?

[@butlion6804]

Amazing video! Thanks!

[@RBTheMechanic]

No problem always here to help with anythingg

[@Gratitud07]

Thanks for the info

[@aliakram9142]

How can I be sure that my ac fuse or relay has problem? My ac works perfectly during early morning and night as well but takes time in afternoon is that relay or fuse issue?

[@RBTheMechanic]

No that’s not relay but it seems like it might be low on Freon usully that occurs when it dosent give enough cooling in beaming sun

[@JohnDoe-fs6lz]

how about if it blows hot air and after driving it cools . than goes back to hot air .

[@RBTheMechanic]

It maybe need ac service prolly has air and Freon pressure mixed

[@richbird21]

Thank you bro nice tip 🤞🏽👏🏽

[@jasc238]

What do you do if you change the relays and it’s still blowing out hot ?

[@RBTheMechanic]

Put the ac on see if both radiator fans come on immediately also check power to the red wire on ac compressor if fans come on that means ac activates and the compressor should have power and if clutch don’t engage it’s bad ac compressor

[@RBTheMechanic]

Watch this video on test and replacement of compressor 1hr job!!!

[@ROrneli]

Thank you

[@RBTheMechanic]

You're welcome

[@colingribben5582]

Hey so I replaced the ac compressor and it works but it’s still blowing out hot air and there’s not a leak in the system so what could it be?

[@RBTheMechanic]

Dose the low line get cold? Touch the low line to see if ur gets cold

[@stephanieb6578]

Same Honda dealer said leak new compressor $800./🤬2006 Honda Civic still cold goes off & blows hot air! Was original problem to fix now paid $800./worse than before?

[@wazzabanzook5028]

i have a 2006 honda civic, the ac/ heater controller is same as your car, anyway so the buttons on mine are very scratched so i decided to buy another controller that looks better and cleaner, i installed it and everything works except when you put the ac on the compressor doesnt start, i put my old controller back and the ac started but when i changed back to the new one the compressor wont start. could this be a problem with the new controller i purchased or is it that my car doesnt accept other controllers

[@RBTheMechanic]

Seems like the part is the issue it should had worked

[@lulusparkles6324]

How would you know if the rely is bad?

[@RBTheMechanic]

To confirm the test is longgggg put the ac on and see if both radiators fans come on if they do it could be bad relay just swap it and let me know what happnes

[@ezequielmontalvo7845]

I got a problem my both fan and the A/c Compressor never turn off always on i dont know why

[@RBTheMechanic]

Check ur Freon pressure. Reading high and low

[@YEAHISAIDITMFS]

THANK YOU POPPY*

[@auntieM1980]

My ac runs the compressor is on but it blows hot air. The repair shop said I had no leak and just filled it with freeon. Still blowing out hot air. I paid them 200 for nothing. Would this fix my issue?

[@RBTheMechanic]

Every thing u said didn’t make sense if compressor runs then ac should be cold u less it got air pressure if u got leak it will loose pressure and compressor with not run or ur not acurate about know ac compress clutch enaged or not? Do me a favor swap the relay and try other wise find another mechanic put in uv dye with recharge let’s see where that takes u

[@kyalokithito8408]

Are the pipes of the ac getting cold? ​@@RBTheMechanic

[@chivas3244]

My ac stoped working only this that turns on are the fans they wont turn off until i turn off the ac i might have to check this out today

[@RBTheMechanic]

That means ur system with activating change out the relay that could be possibility other wise check power in to the red wire going to ac compressor it’s right on the top

[@Nature22]

What if my problem is no air blowing at all? I tried everything, so I got a new blower motor does that sound right?

[@RBTheMechanic]

Did u try on highest speed? Check with test light power and ground on the blower motor connector

[@Nature22]

@@RBTheMechanic okay will do today when I get home! Thanks for the reply! I’m hoping it’s the blower motor because it’s no returns on eBay 😩😅

[@ad1960rag]

Saved me you legend🎉

[@RBTheMechanic]

Nice

[@hecks_b_rex]

Problem I'm having is the AC compressor and fan stays running it doesn't click on and off like a normal working a/c! any ideas?

[@RBTheMechanic]

This could be diffrent issue but if I were to tackle this problem I would start by checking ac pressure and see if low and high pressure is in range with car off and then ac on some time pressure could cause ac system to continue running all time

[@hecks_b_rex]

@@RBTheMechanic will do thanks for the quick reply 👍🏾

[@trey631]

Today my AC fan inside the car stopped working all together. Even if you turn the fan up to high, nothing blows out of the vents. Also the emissions light came on as well. AC Worked fine yesterday and no emissions light yesterday. Any suggestions? I changed my starter out the day before. The vehicle is a 2009 TSX. I put in a Denso starter. I figure the emissions light may be because the computer reset due to the battery being unhooked for a few hours while I was changing in the starter.

[@RBTheMechanic]

Well u need to check fuse for blower motor it could just be bad blower motor but the emission light scan the car for codes

[@trey631]

@@RBTheMechanic I checked all the fuses yesterday and they were fine. I then unhooked the blower motor power to see if it was getting juice, and it was. The multimeter showed like 11.86 volts. So, I ordered a new blower motor and blower resistor. I replaced them this evening and all is cool again in the car. Thanks for the feedback. My YTers post content but rarely reply to viewers. Thanks for not being one of those guys! 😀

[@RBTheMechanic]

@@trey631 nice job!!! That was good diagnostic even I didn’t show that u will add that part in my new videos!!

[@jafhar1]

Hey would you know what cause my ac to stop working if I’m not giving it gas? I notice that my ac only works if I’m driving but when come to a complete the ac stop working.

[@RBTheMechanic]

It might be low on Freon so when ur driving and giving gas compressor is running faster to push faster so you might need ac service

[@aaqibahmed2681]

Thank you so much bro

[@RBTheMechanic]

Did this fix it?

[@frankramirez86]

So I need to replace the 15 Amp, because I replaced the mg clutch 7.5 and the relay, and didn't work. However I think I needed to replace the blue fuse 15 Amp now to see if it work

[@RBTheMechanic]

Did U check Freon pressure

[@frankramirez86]

@@RBTheMechanic yes it was empty so I purchased a autozone refill can and now the AC is working, however after couple of hours the compressor stop again, and I already checked and changed all the relay and fuses, I believe the AC compressor is bad I going to have to changed it. One last thing which compressor you recommend I'm thinking of buying denso from autozone with 2 year warranty. What are you thoughts

[@RBTheMechanic]

@@frankramirez86 well before u have the compressor u need to find out why did it stop working? Could it be u have leaks and now pressure went low and it stopped?

[@frankramirez86]

@@RBTheMechanic they check everything they is no leak and the electric is not actually doing anything

[@RBTheMechanic]

@@frankramirez86 put the ac on and see if both fans on radiator come on

[@guilfredomaldonado6900]

Also my car is a 2009 Honda Accord EXL 4 door 2.4 L.

[@HWilliams-el6bh]

Point to what your referring too would help verbal saying it but not point to what your referring too makes it useless …

[@RBTheMechanic]

Sorry will do and keep that in my mind for future sake

[@user-qo7bx5po3z]

@@RBTheMechanic hi thank you I’m about to replace mine

[@RBTheMechanic]

@@user-qo7bx5po3z welcome

[@Tintoycar]

What's the part number of the relay?

[@RBTheMechanic]

It’s on the old relay u pull out after marker number is ry302. You can find original part umber if u put in ry302

[@Tintoycar]

@@RBTheMechanic Thanx!

[@antoniorajkovic9981]

the compressor does not get electricity, I tried to check the pins of the relay seat and there is no electricity, only the fans turn on, do you know what should be looked at, greetings

[@RBTheMechanic]

Replace the relay and check the fuse take this step first I never check I replace the relay to start

[@antoniorajkovic9981]

@@RBTheMechanic you mean the main relay to start the car,I tried replacing the compressor relays,nothing happens

[@RBTheMechanic]

@@antoniorajkovic9981 did u check Freon pressure low and high side

[@antoniorajkovic9981]

@@RBTheMechanic just made, the first connector from the compressor had an interruption in the power supply, after 2 days of searching, the air conditioner finally works, it's terrible how badly they did it, anyway, thank you very much

[@RBTheMechanic]

@@antoniorajkovic9981 oh ok glad u got it done

[@seemaab]

Great video! Question, if my Honda Civic 2005 AC comes on but the compressor goes off and on every 5-10 seconds, is this normal? What could be the cause? Thanks

[@RBTheMechanic]

That could be normal also it could be low ac Freon maybe need a service

[@seemaab]

@@RBTheMechanic happened after I topped it

[@seemaab]

@@RBTheMechanic pressure switch? Does the 05 ep2 even have one?

[@RBTheMechanic]

@@seemaab ep2?

[@RBTheMechanic]

@@seemaab might be too much

[@miguelbuenrostro220]

Ei what's up, i can't find the a/c relay of my honda Civic 2012, the a/c motor it's not running, and i tried to connect straight and it works, but i can't find the relay my fiuse it's ok, so i think it's gonna be the relay, can You help me?? Tankyou bro, i'm see tour videos from Jalisco México 🇲🇽, sorry for My English 😅 Hope you understand, tankyou again

[@RBTheMechanic]

The one that says MG clutch or has snow flake should be the relay for ac compressor

[@snoopycharlie8718]

Don't suppose you know the amp rating? I can only find a 30amp relay but thought I recall the original was a 40amp? 12V 120ohm. You think I could just try 30amp one and it'll just blow if not correct without causing damage?

[@RBTheMechanic]

30 amp what? Ac fuse??? For relay I usually buy by my parts department I wouldn’t do any test which can be faulty fake reading u will get

[@snoopycharlie8718]

@@RBTheMechanic My local parts shop said the rating for the 5pin relay is: 12V 120ohm 30amp. But I'm not sure what original Honda relay rating is - can't find the information.

[@RBTheMechanic]

@@snoopycharlie8718 yeah sorry Just pick up correct relay from part store and plug it in unless u wanna test it will be hectic also it’s not about reading these results get jammed they click and work but the contact don’t make complet circuit

[@snoopycharlie8718]

@@RBTheMechanic Cool man - thanks for video and advice 👍🏻

[@sheba6779]

Hi great video 👍🏼 . I have a 2008 Honda Civic Ex and I rebuilt the AC compressor, everything was working fine for a few months. Now the 7.5 amp fuse located in the engine compartment keeps blowing out. Do you have any suggestions why this is happening? I checked for loose or cut wires but no luck. The 7.5 amp fuse keeps blowing out every time I turn on the AC, thank you.

[@RBTheMechanic]

Check for short in compressor circuit also u can disconnect the connector to compressor if fuse dosent blow u have bad coil on clutch

[@sheba6779]

@@RBTheMechanic ok thank you

[@adriannieves1209]

Also you can check the inside filter make sure is not clought, making resistan for the air to come out and blow the fuse

[@RBTheMechanic]

@@adriannieves1209 yup

[@wwefan4life274]

If the AC light turns on after pressing the button on the dashboard, could the issue still be related to the relay ?

[@RBTheMechanic]

Relay fuse ac compressor or low on Freon would cause light to come on but not enough to make cold so check to see if ur ac compressor engages if it dosent check, then check ur relay and fuse. But I would change out the relay regardless

[@wwefan4life274]

@@RBTheMechanic thank you I will change the relay

[@SavNout01]

Dude, he showed the wrong fuse... I believe it's the other 15amp dude, he covered with his thumb.

[@RBTheMechanic]

I will check

[@CesarGarcia-rk4sb]

My AC switch delays a little to engage maybe a couple minutes or so. Is there any problem related to the relay or any other issue such as thermostat or someting else?! After the switch engages, the system goes perfect with super cool air. If someone could give an opinion about it, I will deeply appreciate it!

[@RBTheMechanic]

It could be relay or compressor or even the system low on Freon u have to check to see if u let compressor engages immediately maybe ur feeling it’s not getting cold quick

[@CesarGarcia-rk4sb]

RB, thank you so much for your reply, and I will first check the freon pressure first and after I should go for the rest as you say! Thank you so much!!

[@criksarangel7840]

I replaced that relay around this time last year and today I randomly started messing with the side mirrors, then out of nowhere, my ac which was on full blast completely turned off, the lights on the controls dont even turn on and the side mirrors stopped working completely too, do they share a specific fuse or relay? Or what could the issue be? It is extremely hot here in NC and insight would help immensely, thanks in advance.

[@RBTheMechanic]

They do run through acc fuses so best would be start checking all fuses and it can also be both failed togather so I would tackle the ac relay and fuse and check all other fuses. Let me know wat u discover start with ac relay by the way relay dose have effect on other things on the primary side of the circuit of relay

[@criksarangel7840]

@@RBTheMechanic thank you so much, my friend and i tried checking all the fuses and relays but 2 in particular almost look like theyre melted into the slots and we couldn’t get them out im hoping its those 2 and not something more serious

[@RBTheMechanic]

@@criksarangel7840 yeah that might be it

[@guilfredomaldonado6900]

Hey bro listen earlier today I watch your video on the mg clutch and relay for the a/c and I believe that I unplugged the wrong relay and my check engine light is on and I believe it was the heater relay in which I tried to switch around can you please help me out because when I went to the auto parts store and they ran a scan it came out to be a PO 135!and a PO 498 I'VE BEEN STRUGGLING WITH IT CAN THIS BE FIXED NEED ON HOW TO FIX IT

[@RBTheMechanic]

Well if u pulled out wrong relay and popped a light to come on simply reset the light you might have to buy scantool usually simple one goes for like $80 just reset it and if it dosent come on u should be good

[@ryanday6648]

Can this be the problem if it sometimes turns on and sometimes won’t

[@RBTheMechanic]

Yup it can be

[@mohdrizalarshad5156]

if the my car aircond compressor of the civic 1.8 2011 is too fast to cut off and on, is there a relay related as well?

[@RBTheMechanic]

Well I would change the relay just so it don’t fail and cut off the ac system since summer is here ... other wise I think ur car is low on Freon so it pushes and when there’s nothing left to push it cuts off and kicks on and the cycle repeats so it would be good time to have the ac system reservice and do it propperly by recovering vacuuming and recharging with correct amount for r134 and ac system oil!!

[@sashajohnson812]

So question if the fans dont work either do u think I need to change all the fuses for the fans as well ? Along with the ac relay?

[@RBTheMechanic]

U can check fuses and relays… but which fans are you referring to? Radiator fan? Or the blower motor for air inside cabin?

[@sashajohnson812]

@@RBTheMechanic radiator fan.

[@sashajohnson812]

@@RBTheMechanic I was told my radiator fan motor is bad and I need to replace the 2 and long fuse with the multiple fuses in it. I think that's the long skinny one responsible for the ig fuses. And ac relay😭😭😭😭😭😭😭

[@RBTheMechanic]

@@sashajohnson812 ok if the fan is bad for radiator ur car will over heat anyways did u take it look to see if fans are running? This would need electrical trouble shooting

[@RBTheMechanic]

@@sashajohnson812 take a look to see if fans are bad it’s rare both fans would die out at same time unless fuse is gone

[@baycarro4281]

Very helpful you save me 800 dollars buddy

[@RBTheMechanic]

Nice job!!!

[@katrinasfundraisers6748]

2003 Honda Civic whenever ac is on the belt squeals, I used wd40 but every single time I drive it in the 100 degree weather having to spray it is a pain in the butt. Any suggestions to get rid of the squeal plus it’s taking power supply and my car dies when the ac is on

[@RBTheMechanic]

How old is the belt it maybe stretched and need to replace the belt

[@katrinasfundraisers6748]

@@RBTheMechanic I paid my mechanic to replace it a year ago and the squeal never went away. Is there a way to tighten the belt? Would that help?

[@RBTheMechanic]

@@katrinasfundraisers6748 on this civic the tensioner is spring loaded so it hold and adjusted it self u less it got weak anyways try to put on better belt if u used gates belt most likely it will squeak some gates belt speak some don’t if u get lucky try using original I have had cars that the compressor it self caused belt to slip and squeak cuz the load it as puttin since it was worn out. So ur first step is replace the belt and cross your fingers

[@katrinasfundraisers6748]

@@RBTheMechanic thank you so much for your reply. I will definitely try that again. This time I’m going to replace it myself. If the belt doesn’t fix the problem, do you think the entire part needs replaced? Like a faulty compressor was installed to begin with?

[@RBTheMechanic]

@@katrinasfundraisers6748 do the belt first don’t even through about to compressor yet

[@bastienpantin7310]

My car starts to blow out warm air after 5-10mn on the highway and to start it back I have to either slow down or push it hard on the pedal. It really feels like the relay is dying. For me the relay goes to sleep and I have to give it a wake to turn it back on. What’s your opinion about this?

[@RBTheMechanic]

I think ur Freon is low it might need high rpm from compressor to push out cold so change the relay regardless and do service as well do it propperly with recovery vaccume oil and Freon

[@bastienpantin7310]

@@RBTheMechanic I’ll change the relay and make the Freon level checked by a professional then! Will keep u posted

[@bastienpantin7310]

@@RBTheMechanic The fact that it also goes cold again when I lower the rpm makes me think it’s more of an electrical problem

[@RBTheMechanic]

@@bastienpantin7310 it can just be related to Freon going around

[@MuzammilKhan-xx7kc]

Hi RB hope you are doing well. I have Honda Civic 2008 last whole summer I had issue with AC blow hot air. When it was a day time AC blow hot air and after sunset temperature went down it started picking up but inconsistent. Not sure what causing this issue? Please help

[@RBTheMechanic]

It might be low on Freon I would have it reservice see how that makes a effect ... last week it wa alike 60 degree where in the sun got hot my car is low on ac Freon and I was using ac every time I stopped at red light and u see shade it made mild cold but in the sun i didn’t feel cold anyways I have small leak I fill it every summer and it works good try this step first

[@EmiLove36]

Hey there! My car is having the same problem blowing hot air in the day and back to normal once the sun goes down. Have you been able to find a solution? Not sure what to do for my car either

[@MuzammilKhan-xx7kc]

@@EmiLove36 I did check with my mechanic and found loss of freon. I filled up freon right now looks fine and waiting to test actual in summer days when it comes.

[@EmiLove36]

@@MuzammilKhan-xx7kc Thank you so much for your reply. Freon, I see..Hopefully that works out great for you in this coming summer :)

[@RBTheMechanic]

@@EmiLove36 you cat might be low on Freon that would cause it to work good but only when the sun goes down cuz it dosent need too much cooling anyways try reservice get the system

[@joelnalindhom9906]

Hi, the aircon work perfectly fine and it will stop blowing cold air randomly. This is a 2010 Civic FD. It started behaving like this on the 5th year. 2 years ago I had it cleaned for the first time. The issue stopped for a month and it went back. Should I replace the fuse and the relay? Until now,it happens randomly. Thank you in advance. More power to your channel.

[@RBTheMechanic]

Not the fuse but change the relay and then see the outcome

[@joelnalindhom9906]

@@RBTheMechanic shound it be an genuine honda relay? Is there a specific model for this relay? Will it mess up something if i will use a "replacement / not genuine honda relay? I'm not really sure if our local aircon shop have this specific part. From Manila, Philippines. Thanks 👍

[@RBTheMechanic]

@@joelnalindhom9906 if u can get original relay it’s the best but I use for light relay it’s same the part number is ry302

[@joelnalindhom9906]

@@RBTheMechanic thanks..I'll keep you posted

[@joelnalindhom9906]

@@RBTheMechanic I replaced the relay yesterday and it worked fine for an hour and the issue went back. The car aircon shop recommended to replace the magnetic clutch. Do you think that this could be the issue? This was never been replaced before. Should I try to replace the fuse first or should I go ahead and replace the magnetic clutch right away? Thanks

[@ricardocastrojr5057]

Is the fan and the ac relay the same fuse??

[@RBTheMechanic]

No different and I’m not sure which fan ur talking about blower motor or radiator ac fans

[@ricardocastrojr5057]

@@RBTheMechanic well the one near the engine is for the radiator fan correct? And the blower motor fuse is on the inside?

[@RBTheMechanic]

@@ricardocastrojr5057 yeah under hood u will have radiator and ac fan

[@ricardocastrojr5057]

@@RBTheMechanic thanks man i think my blower motor is what went up cause i replaced both the black 12v relays under the hood and still nothing comes out of the vents shits frustrating. Is it possible it could be a fuse under the steering wheel though?

[@RBTheMechanic]

@@ricardocastrojr5057 ok try this put the engine on put the blower motor on high speed then do down there and hit the blower motor just punch it some times it will come on so if it dose then it’s bad even tho it starter it will go out and if it dosent then u can check power and ground in the wires that go to the motor just to confirm it

[@alvinguzman798]

Thanks mannnnn

[@RBTheMechanic]

Worked?

[@sashajohnson812]

Does this work on a 2013 honda civic coupe????

[@RBTheMechanic]

sasha johnson if it’s the problem it will work most of the time these relays go bad so it is worth the try you never work if you don’t do it your mechanic will be doing it so please try it hopefully it works

[@sandd050]

What are the blue boxes for ?

[@RBTheMechanic]

Those are fuses each one is listed on the box

[@eligioflores674]

amigo is the = for honda si 2009 tank

[@eligioflores674]

Ok I am working tanks for answer my question

[@smithjohn3080]

You pulled yhe efi fuse which is why the car shut off 4:00

[@RBTheMechanic]

Think so

[@carlitos8thgen]

My civic blow hot air while ac on what is the issue?

[@RBTheMechanic]

Did u check relay fuse and Freon? Start with relay swap

[@1991windsor]

I swapped out my relay switch and it worked for about 2 months and then went out again but I never did check the number 19 fuse. I'm going to try that next week.

[@buttonman6262]

So MG clutch is the relay I need to change?

[@RBTheMechanic]

Yes it’s the relay for ac conpressor

[@m3rks_on_you422]

YOU LIT.

[@mikeyone76]

I’ve replaced the whole ac still doesn’t kick on. What do I do next?

[@ericgarza7201]

Toggle switch my guy directly to the fan

[@tyedye9208]

Anyway to contact you personally for this issue on my 2008

[@RBTheMechanic]

No sorry no direct contact you can send me message here let me know what’s going on

[@Antonio-tq9cj]

Great video. I noticed my front fans (both) (engine fans) have gone out and is not keeping the car cool and causing it to overheat, would this potentially be the same relays as in the video? thanks!

[@RBTheMechanic]

No they r diffrent relays u can check the relay with snowflake and radiator pic but most likely ur fans r bad u can use test light to see if they got power when car is got

[@zillizzy]

Amazing video!!

[@AbhishekSharma-vq8ly]

Bhai mere pass honda civic hai Jab car start karta hun To meter me kki light nai show karti Lekin jaise hi first gear daalta hun To metter me engine ki and battery ki light show karta hai Any idea kya problem ho sakti hai

[@RBTheMechanic]

Didnt understand English

[@AbhishekSharma-vq8ly]

@@RBTheMechanic bhai maine to hindi me btyaa

[@RBTheMechanic]

@@AbhishekSharma-vq8ly I can’t make it out translate it

[@dizzyd9763]

What if the fans aren't running?

[@RBTheMechanic]

Dose the ac run and make cold? U can check radiator fan and ac condenser fan fuses and relays also power to the ac fans should have power and ground at the neck of motor or the connectors. Some times fans don’t run they come on and off so give it a bit to come on if they don’t then u must diagnose

[@dizzyd9763]

@@RBTheMechanic Car running for quite some time but fans not running. Relays changed. Fuse changed.

[@dizzyd9763]

2009 Honda Civic

[@shibachanx]

Hey RB, thank you so much for this video. Do you have a recommended spot to buy these fuses from?

[@RBTheMechanic]

U can buy from Autozone or peopboys

[@tricialuke29]

Have a 2007 Honda Civic and it blows hot hot air I change the A/c clutch relay and nothing when I turn it on the compressor don’t even come on do you think I need Freon ? Please help

[@mikeyone76]

No ac fuse on a civic 02

[@jessetantog15]

Even the car shut off with it 🤣🤣 Wrong fuse

[@RBTheMechanic]

Relay powers other things

[@gadirpalacio7714]

😊

[@zimdawg67]

Question:

[@RBTheMechanic]

Yes?

[@imranmidaz]

My ac keeps going on and off in short Intervals.

[@RBTheMechanic]

Seems like it’s definitely low on Freon or relay is cutting off swap the relay to behind with see how it work out

[@imranmidaz]

@@RBTheMechanic I recently topped up the AC gas, and did full AC service. Even changed the condenser and fans. But still it goes on and off. I guess it's definitely a relay problem, will have it checked. Thanks for this informative video.

[@akshay6009]

Hey RB, Hope you are doing good. I'm wondering if the A/C fuse is supposed to be 7.5A(MG clutch) not 15A. The problem in my civic 2007 is that after few minutes (8 to 10) AC won't blow cold air. I switch off AC and turn it on after 5 minutes it blows cold air for a few minutes. What could be the problem?

[@RBTheMechanic]

Change out ur relay first if all... usually fuse on Honda’s is 7.5A. Once u change out relay hopefully it work if it dosent then u need to check Freon pressure it can be low

[@akshay6009]

@@RBTheMechanic Thanks RB, i need to change the relay first.

[@rohitahlawattt]

Hey same problem in my civic what was solution

[@robertficek7586]

I have seen this issue, quickest way to verify is to visually confirm the clutch is spinning, if the fuse, relay and mag clutch are all working and the compressor is still not spinning you could have a larger gap between the clutch and pulley. The clutch comes from the factory with a washer shim. Sometimes its enough to remove the factory shim and the gap comes back into spec (0.35mm - 0.65mm)

[@staywoke2198]

@@akshay6009I have same issue. Did relay work?

[@jhp1100]

none of that works, I check relay, it is good and the fuse is ok , new compressor and still not engage your solution is not worth

[@RBTheMechanic]

If u ask me to check relay I wouldn’t know how to and if I didn’t would be faulty test replace the relay there is no saying relay I checked

[@adarsh_jaiswal]

Hi RB- Thanks a lot for sharing your knowledge in a very easy to understand way for us who are not very familiar with the working of AC system in car... I have a 2009 Honda civic which had AC issue. I saw your video and bought a Relay at auto parts store and was able to do this myself... The AC started working again.... Thank you so much....... as a small token of appreciation I want to send you a small gift.... Please let me know u r contact details...

[@alfredoibarra7382]

Ya lo cambie pero el compresor sede sativa derepe te

[@mariop.2758]

@@alfredoibarra7382 pueda ser el blower se te arruinó va adentro por los piez del pasajero si ese ventilador no corre no tira aire helado