Doing This Will Make Your Car's AC Blow Twice as Cold

rev up your engines here we have a common problem a car that the air conditioner isn't blowing cold now this happens to be a Honda and the most common problem with it was a simple one over time they leak refrigerant so it's 2007 so you're talking about 16 year old car well what happens is this you can see that's the original air conditioning compressor right down here use the fan belts to drive the compressor so the compressor has a shaft that spins well that shaft has a seal the seal keeps the refrigerant from leaking out but here's the thing about it it can't be a perfect seal because if it was a perfect seal it would burn out the shaft metal rubbing on the rubber would burn it up so it leaks selectively a little bit of refrigerant and refrigerant oil that lubricates it all cars lose refrigerant over time but Hondas they're more prone to it I see Hondas often that are two or three or four years old and I already gotta add refrigerant that's normal now in a Toyota they're a little bit better sealed systems in the Honda's now you can actually do it yourself if you don't trust mechanics to charge 150 an hour and say well you need a compressor or a condenser you need all this work often it just needs refrigerant now the only thing you got to know there's R134a and there's the new r1234yf with a stupid name and also a stupid idea because it's partly flammable including this tell you what you have you can see right here air conditioning system right we'll get the dirt off of it and it tells you that it takes 0.550 kilograms or 19.4 ounces and it also says refrigerant type 134a you get these cans just about anywhere 134a and here's the other stinker of it the new one two three four YF costs 10 times as much as the stocks which is absurd it probably cost three cents to make right but it's a new anti-pollution it doesn't ruin the ozone layer now the reason they went to this from free on this because they said this didn't ruin the ozone layer but now they got to stick up the rear end so you know that it still ruins the ozone layer so we'll make one that doesn't ruin the ozone layer at all but if the car starts on fire it might burn you up that's okay right you can buy this at most stores in most places our government has to take in absolutely everything over yet you can still buy it now there's some states where you can't because they say only a certified technician can put this in but as you're going to find out it is not hard to do now if you want to do it yourself and guess it's not that hard to do you get a can-tap screws on this you can put it in add a little at a time until it starts blowing cold and if you have one of those ad systems that has a little gauge you can watch the gauge and when it goes in the green before it gets to the red you can do it that way and you'll probably get called AC but I'm going to show you how to do it the right way because systems today use such a small amount of refrigerant these things used to use five six pounds you want to get it right you don't want too little or too much so the first thing you really want to do if you want to do it correctly you get the low pressure fitting from the gauges and you stick them on the low this says low they all don't say low but it only fits on one if you put it on the big one it won't fit in this case he was spot on you see it's got about 40 PSI it should be like 90 or something so we know it's low so what we're going to do you could add it if you want like I say keep adding it and if the pressure goes up just right it's good but see the pressure is dependent on the temperature outside the humidity outside even the altitude you're at it's a lot easier to just suck it all out and then add the factory load which you already know is 550 grams now there's also another reason you really want to empty the system out because now in this guy's case we don't have to worry that there's something else in the system because he's the original owner he gave it to his son nobody else has been working on I think but let's say you got a car or you had somebody work on it if some fool works on your car and they get air in the system or they put the wrong refrigerant in and you add stuff on top of them you're going to compound the problem here and assist system will destroy an air conditioning system so it's best to just suck it out then you know there's absolutely nothing inside it but a vacuum and when you add the refrigerant you know the stuff you bought is real there's nothing else in there with it and so it should work pretty good and you're not gassy if you go by pressures you're guessing if you go by put a little bit in you're gassing this way there's no gassing at all side ones for Freon and if you got the new one two three for a while guess what I have adapters in the garage and you got to put an adapter on it because each system thanks to our governmental regulation has a different size thread on it so the insanity goes on pull up in the vacuum error and it'll take it all out plus you're also emptying out all the water vapor in the system if anybody got water vapor in the system that will destroy your system like one part of a thousand of water vapor eat up your whole AC system so doing this you're doing two things you're getting rid of what's in it and you're also getting rid of any water vapor as it's in the system so it's a good idea to vacuum out nice it's sucking out you can see here this is the new can and they actually have a valve built in so this tap can is made for that I'll screw it out and show you it's a little piece it isn't pointed it's flat and it opens the valve some of the older style ones you have the same can tap but it's got a pointy end because this is just naked steel and punches the hole they did this so it doesn't leak into the atmosphere it's a better system and almost all the cans you buy today are going to be like that and while we're waiting you'll see this is 340 grams right 340 grams and we went 550. so we'll put that whole thing in that's simple but then the other one is 340. so how do we make it 550 well you look a little basic math 550 minus 340 is what 210. why the heck you get her at all you can put it in 210 grams well back in Tennessee I don't even use these little cans I use a big giant 30 pound canister it goes on a reverse scale well in this case I just bought this postal scale it's like I don't know 20 bucks on Amazon you just put it on you'll see and then when it goes from that weight and there's 210 grams less I turn it off and we know it's the exact same amount now if you don't have a scale you can guess and say oh it feels cold but what's the whole point is to make it accurate and it may you can use this proportional waiting too you know you can't weigh yourself unless you're really small because the maximum is only 50 pounds it's all the vacuum pumps steady and what you can do here is the track we're closing the vacuum pump and what we do is we watch the gauge if the gauge moves back up to zero that means there's a leak in the system you need to fix now we know this is leaking but it's been like six years that is such a small leak you will never find it now you never know though maybe in the last week all of a sudden the big leak occurred then that thing would go to zero we'll see what happens see what you see it's staying steady right 10 pound minus pressure whatever gauges aren't exactly perfectly accurate you mainly want to make sure it doesn't move and it's not moving so what we're going to do is screw the can down that opens the valve inside there is a small amount of air in this hose here right and you do not want that air to get into the system so this is a good gauge set and it's got the little baby gay trailer there goes the air the Air's not out of the system so there's no more air it pushed it up so now we make sure the vacuum pump's closed it's closed and then what we're going to do is we're going to open up the feed line which is here and open up okay the refrigerant's starting to go in now only a small amount of refrigerant is going to go in without the engine running so now we're going to start the car up it needs to have the system running so start it up turn on full blast AC starting to suck it in 10 gets cold and what you want is the slower the better if you rush too much refrigerant in too fast it all worn the compressor you can actually Bend things inside so slower is better you don't want to make it go as fast as possible you want it to add the system in slow all right so this one stopped so we're turning the refrigerant line off you're not connected anymore to hair which I just can't help put the other can on and you're like a little hiss it's never perfect now we got the other can now but we're going to do this a little differently we're going to open it up we're gonna let it out here though piss the air out we're gonna place it on the postal scale so we'll turn the scale on and we want it in grams we got a zero the system for zero grams all right now we got 562 grams that's what she put on 340 and we want 550 okay the only one 210 Grand so we'll watch this until it loses 210 grams which is when it will pay 356 Grand so here we go actually going down slowly but surely and I can feel inside it's starting to get cold down into the 400s now and like I say don't rush it because if you put it in too fast you can bend the valves inside the compressor and it's not what you might think it's not like a car's engine that has metal valves on the intake these are plastic Valves and they can break real easy so take your time when you're at it a lot of guys they'll just open everything up full shake it and get it in as fast as they can no be patient getting closer and closer that's done turn it off and while it's running we'll take this off and the reason we take the line off what it's running is because there's less pressure it's sucky if you turn the car off the pressure will go up to 90 pounds and more will leak out when you quick take the fitting off and as we go inside it's got a nice cold I see so you can see it's not that hard to do now like I said if you want to be cheap you could get just the can add it in until the Stock's blonde cold that's good enough for you not enough later on you got to add some you can add some in right but this way we know we got a factory load and it'll last longer and you'll know that it's correct plus we know the system's working now so we know the system's good let's say the system has a problem and you just start adding refrigerant you can have all kinds of problems with too much pressure on one side can lead to catastrophic compressor failure if you suck it all out you know you put the right amount in and in this case it's working this is the second time this has been done on the car they're the original owners you give it to a son if you have to add it every once in a while it's cheap well at least this is cheap because it's 134 go to the auto parts stores you'll find a new r1234 YF is like almost a hundred bucks a can so now you know hey a common problem with all cars especially Hondas they'll leak some refrigerant why not learn how to put it back in yourself and like I say if you want to do it right use a vacuum pump hey AutoZone will loan you on if you don't have gauges guess what don't do the gauges too so if you never want to miss another one of my new car repair videos remember to ring that Bell [Music] thank you

Channel: Scotty Kilmer

Views: 1,365,743

Keywords: auto, auto repair, car, car diy, car repair, cars, diy, how to, mechanic, repair, scotty kilmer, car review, ac blowing, ac system, ac system repair, air conditioning, car ac, car ac system, car advice, car life hacks, car maintenance, car problems, doing this will make your ac blow twice as cold, fix ac, how to fix car, how to fix car ac, how to fix car ac not blowing cold air, how to make ac colder in car, how to make car run better, life hack, life hacks, cold, blow cold

Id: L1HkSfyHsJs

Length: 11min 10sec (670 seconds)

Published: Mon Jun 26 2023