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Old 07-27-2009, 08:43 PM   #1
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Default diy ac recharge kits

anyone try any of these out? with the weather 100+ everyday my ac is just not cuttin it. ive been wanting to try out those diy recharge kits you can buy at auto parts store but do they really work? and which ones are good
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Old 07-27-2009, 08:47 PM   #2
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Default Re: diy ac recharge kits

You get what you pay for.


that is all.
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Old 07-27-2009, 08:59 PM   #3
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Default Re: diy ac recharge kits

no, not really worth it. you might loose hand.
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Old 07-27-2009, 09:01 PM   #4
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Default Re: diy ac recharge kits

lol they work. but still wont do you no good with 100+degrees . just get it recharged at a local shop. its like 50-75 around here in California
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Old 07-27-2009, 09:05 PM   #5
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Default Re: diy ac recharge kits

When my car was getting fixed, the shop actually released or removed all my freon. I found out the hard way when I tried to turn on the AC and it was blowing hot air. So I grab a can of R134A at autozone and man did it make a difference. It's acutally pretty cold considering it came from a can.

For you I think you have to remove all your freon first before you can recharge it.

Off topic but using your cars AC every once in awhile is essential because the freon contains traces of silicone whcih lubriactes your AC seals and stuff. Good luck and let us k ow how it goes.
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Old 07-27-2009, 09:08 PM   #6
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Default Re: diy ac recharge kits

Hell yeah they work. I just did it on my subaru yesterday. A shop wanted 170 dollars to check and recharge my A/C system. I said F that bought the kit with the pressure gauge at Autozone for $29 and now I have icey cold A/C.
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Old 07-27-2009, 09:15 PM   #7
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Default Re: diy ac recharge kits

I had to fix a leak on mine awhile back. I used a kit from autozone and it was super easy. Shops use the same process and probably even crappier freon.
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Old 07-27-2009, 09:18 PM   #8
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Default Re: diy ac recharge kits

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I had to fix a leak on mine awhile back. I used a kit from autozone and it was super easy. Shops use the same process and probably even crappier freon.
No shops actually use a pressurized system to pump all of the freon out of your car. Then pump back in the correct amount per the manufactures specs. Im still for the DIY cans, but at least bring the right info to the table.
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Old 07-27-2009, 09:29 PM   #9
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Default Re: diy ac recharge kits

Depending on your model, there is a DIY for a complete AC recharge, including where to rent the vacuum and all.
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Old 07-27-2009, 09:35 PM   #10
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Default Re: diy ac recharge kits

Freon doesn't just evaporate, if it's gone that usually means there is a leak. You may want to figure out from where before you keep pumping freon in. Also don't forget to add the proper type and amount of oil to the system if you choose to go ahead with it.
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Old 07-27-2009, 09:42 PM   #11
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Default Re: diy ac recharge kits

yes the DIY kits work, but you need to make sure you can even recharge it first, which is why its good to get the kit with the gauge on it.

also, before you can actually start 'recharging' with the kit, the a/c compressor needs to be engaged and blowing air at full blast. if your a/c compressor is not engaging, but you know it works, then your system is probably too low on refrigerant - so you'll need to jump the compressor by wiring it directly to the battery while your car is running.

get your system vacuumed if you can before you recharge. if can't get it vacummed you might still be ok to recharge if youre low. its just not good to have air or moisture in your system.
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Old 07-27-2009, 09:44 PM   #12
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Default Re: diy ac recharge kits

Works like a charm.

I still have ac in my rex and its blows ice cold.

Sometimes the ac line goes bad and it blew up, scared the **** out of my cousin.(no he didn't over charged it)
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Old 07-27-2009, 09:45 PM   #13
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Default Re: diy ac recharge kits

Quote:
Originally Posted by perpetualburn View Post
I had to fix a leak on mine awhile back. I used a kit from autozone and it was super easy. Shops use the same process and probably even crappier freon.
False. Do you really think a $30 A/C kit from Autozone is equivalent to a $3,000+ A/C machine? Yes it will work but did you know that a tenth of a pound of freon can decrease or increase your temperature by 5-7 degrees? Do you know that you can have the correct amount of freon in the system and still still have it blow warm due to there being air in the system? and the only way to fix this problem is to evcuate the A/C system with a vaccum pump? Adding freon(Autozone Kit) and doing a A/C service are 2 totally different things.
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Old 07-27-2009, 10:10 PM   #14
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Default Re: diy ac recharge kits

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Originally Posted by smileycvc View Post
No shops actually use a pressurized system to pump all of the freon out of your car. Then pump back in the correct amount per the manufactures specs. Im still for the DIY cans, but at least bring the right info to the table.

well i guess the shop that did mine didn't do it correctly awhile back.
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Old 07-27-2009, 10:11 PM   #15
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Default Re: diy ac recharge kits

how did you recharge the crx, i thought i wasnt r134 or whatever
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Old 07-27-2009, 10:40 PM   #16
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Default Re: diy ac recharge kits

Blah blah blah, they work so everyone just shut up.

If you used it and it didn't work, well.. That is because you are an idiot.

All shops don't use $3000.00++ ac evacuators.

You can buy commercial ones on ebay for cheap.

You don't need all that if it's empty anyway.

Just put a screwdriver and release all the old stuff.

Filler' up with the new stuff.

And if you want to get all technical get a ac manifold gauge kit.
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Old 07-27-2009, 11:02 PM   #17
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Default Re: diy ac recharge kits

I used the kit with a gauge after a shop disconnected my AC (thus draining it). I filled it up to the recommended level and now it works great... It was ****ing nice today. Ice cold air on our hottest day of the year.

Then again I know the system has no leaks and is in good condition, it was just emptied while the compressor was moved out of the way.
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Old 07-27-2009, 11:16 PM   #18
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Default Re: diy ac recharge kits

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Originally Posted by im a monster hehe View Post
Blah blah blah, they work so everyone just shut up.

If you used it and it didn't work, well.. That is because you are an idiot.

All shops don't use $3000.00++ ac evacuators.

You can buy commercial ones on ebay for cheap.

You don't need all that if it's empty anyway.

Just put a screwdriver and release all the old stuff.

Filler' up with the new stuff.

And if you want to get all technical get a ac manifold gauge kit.

If you're going to do it the ghetto way, might I suggest an easier method of evacuation? Instead of putting a screwdriver in the schrader valve which could potentially cause a schrader valve leak, why don't you just connect the charge hose without a can attached?

Back on topic....

You can rent a vacuum pump and an AC manifold set from autozone for $20.00 or so. Some autozones don't have manifolds for rent, but cheap ones are like $20.00 at harbor freight.

With the car off, vacuum the system out for about 15 minutes or so, then remove pump. Put the manifold on, add a dye tank in, turn car on, turn a/c on, with freon can/tank upside down, let her rip until you've reached the proper pressure. Enjoy your new a/c.

If it starts to get warm, check pressure. If no pressure, fix leaks, charge again, then call it good. If it has pressure, then you've got to diagnose it.


I use a machine, but if I didn't have one, that's how I'd do it. Total cost would be probably like $70.00-$100 or so.
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Old 07-28-2009, 01:20 AM   #19
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Default Re: diy ac recharge kits

Yeah, but if you use the screwdriver method it looks like your nos is purging.

Your neighbors will think you have dual vtech with nos stage 2.

But yeah, if you want to do it the boring way... Use the charge hose.
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Old 07-28-2009, 01:23 AM   #20
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Default Re: diy ac recharge kits

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Originally Posted by sde780 View Post
how did you recharge the crx, i thought i wasnt r134 or whatever
honda sells a conversion kit. it's basically two nipples and some oil for the compressor. it's about 92 bucks. good luck finding it anywhere else.
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Old 07-28-2009, 01:30 AM   #21
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Default Re: diy ac recharge kits

walmart autozone kragen pepboys etc..
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Old 07-28-2009, 01:32 AM   #22
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Default Re: diy ac recharge kits

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walmart autozone kragen pepboys etc..
they didn't fit. i went ****ing everywhere before i had to shell out $92 for two tiny pieces of metal and some oil.
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Old 07-28-2009, 03:50 AM   #23
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Default Re: diy ac recharge kits

Quote:
Originally Posted by im a monster hehe View Post
Blah blah blah, they work so everyone just shut up.

If you used it and it didn't work, well.. That is because you are an idiot.

All shops don't use $3000.00++ ac evacuators.

You can buy commercial ones on ebay for cheap.

You don't need all that if it's empty anyway.

Just put a screwdriver and release all the old stuff.

Filler' up with the new stuff.

And if you want to get all technical get a ac manifold gauge kit.
lol should take your own advice

1. It is NORMAL for cars to loose refrigerant over time since seals do leak.

2. if you have to repair a leak, replace ALL of the o-rings and the accumulator/receiver/dryer

3. since there is NO ACCURATE WAY TO DETERMINE HOW MUCH REFRIGERANT/OIL is in the system, it should be drawn out using a vaccum. The system should be able to hold a vaccum for at least 4 hours, it not, find the leak and repair it and then reapply the vaccum for 4 hours to verify repairs.

4. recharge system using maufacturer's specs for refrigerant/oil

now with that said, you can add refigerant using a can but you have to do it a little at a time and wait inbetween additions to make sure the system has stabilized and you are getting the correct readings (you really should be using a quality guage set) and you should follow the manufacturer's specs for pressure at idle.
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Old 07-28-2009, 11:21 AM   #24
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Default Re: diy ac recharge kits

read this:
http://www.honda-tech.com/showthread.php?t=1665946

basicallly you need:
1. vacuum pump (you can purchase and return like i did @ harbor freight) 149.99
2. a/c manifold gauge set (same thing. purchase and return) 49.99
3. can tap/valve for the r134a cans (autozone)
4. 2 bottles of r134a (depends how much you need, my civic's manual specified 19oz)

then..
1. purge the remaining freon out of the lines (press the valve on the LOW side). it's not environmentally friendly to do so; follow at your own risk.
2. connect the vacuum pump to the gauge set, connect the gauge set to your high and low side ports. let it run for 30 minutes. you need good vacuum (near 29.xx mmhg) to get all the air out and for the moisture to evaporate as well.
3. shut off the valves for the ports to keep the vacuum.
4. take out the vacuum pump and swap it with the can tap, then tap into the can of r134a.
5. to make sure there's no air that'll get sucked in, purge the middle valve til some freon comes out. this makes sure only freon gets into the lines.
6. start the car, turn the a/c to max and release the low side valve. shake the can and it'll start to fill up the lines with freon. rev your engine so the compressor takes more of the contents into itself.
7. when the can's empty, close the low side port and then disconnect the can. attach a new can, purge the line, and the open the low side port again to continue filling it up. use your best judgement as to how much freon you actually need. you can also check your a/c manifold gauge for the correct pressure stated on your service manual.
8. go back and return your ****

total cost after the returns was just about 20 bucks for the cans of r134a. not bad for a semi-professional job.

it doesn't replace the big-*** machines that'll suck the **** out of your a/c, but it's pretty damn close.
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Old 07-28-2009, 11:28 AM   #25
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Default Re: diy ac recharge kits

I have a hole in my AC condenser..someone wanna come fix it for me. This heat sux!
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