Need to empty ac system.. by myself
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From: Manahawkin/Hackensack, NJ
Car: 1987 IROC-Z
Engine: 305 LB9
Transmission: 5 Speed
Axle/Gears: 3.70 Posi BW 9 Bolt
Need to empty ac system.. by myself
i wanna take out my ac but its filled and i cant go somewhere to get it emptied. so how do i empty it??
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Joined: Jun 2002
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From: England UK
Car: 85 Z28
Engine: LG4 modified
Transmission: 700R4
The air conditioning gas (which I believe is Freon, although it may be spelled differently) is highly dangerous stuff and I don't think it would be wise to try to remove it yourself, unless you are trained to do so and have the correct containers to store it in. I've heard of people losing fingers whilst draining that stuff, so I'd leave it to the professionals.
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Don't know WTF this guys talking about
but crack a line and wait 30-45 seconds, all of a sudden you have no more Freon. I guess if you get scared by the "hiss" and the hood falls down across your hands....
Ofcourse I don't see the logic in taking apart a perfectly good system, but to each his own.
but crack a line and wait 30-45 seconds, all of a sudden you have no more Freon. I guess if you get scared by the "hiss" and the hood falls down across your hands....Ofcourse I don't see the logic in taking apart a perfectly good system, but to each his own.
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Joined: Apr 2002
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
well its illegal to do.. but grab a phillips head screw driver, push in the shrader valve and stand bad.. if anybody notices or informs u its illegal tellem omg! i accidently broke my ac line while tryin to pull my spark plug! and act really dissapointed.. hehe
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
you could always use a long screwdriver, and press in the shrader valve.
keep clear though because that stuff will be cold enough to give you frostbite.
that will remove all the stuff under pressure.
to really empty the system so you can refill it, you need a vac pump
keep clear though because that stuff will be cold enough to give you frostbite.
that will remove all the stuff under pressure.
to really empty the system so you can refill it, you need a vac pump
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Joined: Jul 1999
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
My only peeve about dumping a good R12 system is the 90 bucks lost in the evac.
I'm really suprised an AC place wouldn't evac it for free, due to the cost of R12.
I'm really suprised an AC place wouldn't evac it for free, due to the cost of R12.
Joined: Dec 1999
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From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
alot of places will do it for free (smaller shops) and if you have any people around the area you can be sure they will get you introuble
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Joined: Jun 2001
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by dans82bird
umm, get a valve core tool and loosen it a little bit... its only illegal if a cop sees you
umm, get a valve core tool and loosen it a little bit... its only illegal if a cop sees you

duuur theres a great idea.
lets take off the valve while we have our hands right in front of it.
and for my next trick, im going to stick my face over the nitrous purge and hit the button.
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Joined: Jun 2001
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
when high pressure gas expands, its cools rapidly and ALOT.
in other words, touch the air coming out and you will freeze your hand.
in other words, touch the air coming out and you will freeze your hand.
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From: Phoenix Arizona
Car: 86 Iroc
Engine: 350 crate
Transmission: built 700r4
hm... maybe my A/C had some different stuff in it. I was looking around to see what all I could rip out, and accidently opened it (I was going to do that anyway, but wasn't ready at the moment) and the blast hit me in the face... it felt just like normal air out of a tire or something... I'm still here, both eyes, both eyebrows
I just let it "his" for like 30 minutes or so, then yanked it all out :hail:
I just let it "his" for like 30 minutes or so, then yanked it all out :hail:
Supreme Member

Joined: Jun 2001
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by Error404
hm... maybe my A/C had some different stuff in it. I was looking around to see what all I could rip out, and accidently opened it (I was going to do that anyway, but wasn't ready at the moment) and the blast hit me in the face... it felt just like normal air out of a tire or something... I'm still here, both eyes, both eyebrows
I just let it "his" for like 30 minutes or so, then yanked it all out :hail:
hm... maybe my A/C had some different stuff in it. I was looking around to see what all I could rip out, and accidently opened it (I was going to do that anyway, but wasn't ready at the moment) and the blast hit me in the face... it felt just like normal air out of a tire or something... I'm still here, both eyes, both eyebrows
I just let it "his" for like 30 minutes or so, then yanked it all out :hail:
was it working before you did that?
it obviously wasnt under full pressure if it was like tire air.
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Joined: Jun 2002
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From: England UK
Car: 85 Z28
Engine: LG4 modified
Transmission: 700R4
Originally posted by 8Mike9
Don't know WTF this guys talking about
but crack a line and wait 30-45 seconds, all of a sudden you have no more Freon. I guess if you get scared by the "hiss" and the hood falls down across your hands....
Don't know WTF this guys talking about
but crack a line and wait 30-45 seconds, all of a sudden you have no more Freon. I guess if you get scared by the "hiss" and the hood falls down across your hands.... 
Maybe when you've taken people to hospital with severe injuries caused purely by a lack of experience with air conditioning equipment, you'll have more of an understanding.
Last edited by si_camaro; Oct 13, 2003 at 07:18 AM.
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From: Phoenix Arizona
Car: 86 Iroc
Engine: 350 crate
Transmission: built 700r4
Originally posted by MrDude_1
was it working before you did that?
it obviously wasnt under full pressure if it was like tire air.
was it working before you did that?
it obviously wasnt under full pressure if it was like tire air.
Well, the blast of air was REAL strong, I didn't mean to compare the strength to a tire, just that it didn't "burn" me or irritate my face.
sorry about the confusion :-)
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From: South NJ
Car: 1988 Mustang GT
Engine: 302
Transmission: T5
Originally posted by MrDude_1

duuur theres a great idea.
lets take off the valve while we have our hands right in front of it.
and for my next trick, im going to stick my face over the nitrous purge and hit the button.

duuur theres a great idea.
lets take off the valve while we have our hands right in front of it.
and for my next trick, im going to stick my face over the nitrous purge and hit the button.
whatever Thread Starter
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From: Manahawkin/Hackensack, NJ
Car: 1987 IROC-Z
Engine: 305 LB9
Transmission: 5 Speed
Axle/Gears: 3.70 Posi BW 9 Bolt
i cant drive the car cus its not registered and its not inspected and i wanna get rid of it so all i gotta do is take off that lil cap on the cannister and push a screwdriver in it or crack the line?
Originally posted by raffi4
i cant drive the car cus its not registered and its not inspected and i wanna get rid of it so all i gotta do is take off that lil cap on the cannister and push a screwdriver in it or crack the line?
i cant drive the car cus its not registered and its not inspected and i wanna get rid of it so all i gotta do is take off that lil cap on the cannister and push a screwdriver in it or crack the line?
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Joined: Jul 1999
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Originally posted by si_camaro
Seems pretty obvious you don't know what I'm talking about
Maybe when you've taken people to hospital with severe injuries caused purely by a lack of experience with air conditioning equipment, you'll have more of an understanding.
Seems pretty obvious you don't know what I'm talking about

Maybe when you've taken people to hospital with severe injuries caused purely by a lack of experience with air conditioning equipment, you'll have more of an understanding.
If someone was doofus enough to burn thier hands, etc in the process, they shouldn't have a wrench in thier hands.
Side note about R12, always though it was heavier than air...seems it would sink to the ground, rather than dissolve in the air ...I dunno.
Oh, and for the enviromentalist in the group
that was me digging holes next to fence post's to dump the oil changes in.: ... posts never rotted. Last edited by 8Mike9; Oct 13, 2003 at 05:09 PM.
Originally posted by 8Mike9
Lol....25 + years ago, long before anyone was telling us R-12 was "bad", it was common practice to crack the fitting off the compressor, wait a 1/2 minute or so as it left the system, then change what was needed, pump it down, fill it up, and go on our way.
If someone was doofus enough to burn thier hands, etc in the process, they shouldn't have a wrench in thier hands.
Side note about R12, always though it was heavier than air...seems it would sink to the ground, rather than dissolve in the air ...I dunno.
Oh, and for the enviromentalist in the group
that was me digging holes next to fence post's to dump the oil changes in.: ... posts never rotted.
Lol....25 + years ago, long before anyone was telling us R-12 was "bad", it was common practice to crack the fitting off the compressor, wait a 1/2 minute or so as it left the system, then change what was needed, pump it down, fill it up, and go on our way.
If someone was doofus enough to burn thier hands, etc in the process, they shouldn't have a wrench in thier hands.
Side note about R12, always though it was heavier than air...seems it would sink to the ground, rather than dissolve in the air ...I dunno.
Oh, and for the enviromentalist in the group
that was me digging holes next to fence post's to dump the oil changes in.: ... posts never rotted.
. Actually in the off-road community (read: me) taking care of these things is a big concern. see, you guys dont know what its like to have to fight to keep your "roads" from being taken away by the tree-hugging environmentalists. every little wrong we do, gets multiplied 100x by those fawkers. so i guess it just makes me naturally concerned
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From: England UK
Car: 85 Z28
Engine: LG4 modified
Transmission: 700R4
Originally posted by 8Mike9
Lol....25 + years ago, long before anyone was telling us R-12 was "bad", it was common practice to crack the fitting off the compressor, wait a 1/2 minute or so as it left the system, then change what was needed, pump it down, fill it up, and go on our way.
If someone was doofus enough to burn thier hands, etc in the process, they shouldn't have a wrench in thier hands.
Lol....25 + years ago, long before anyone was telling us R-12 was "bad", it was common practice to crack the fitting off the compressor, wait a 1/2 minute or so as it left the system, then change what was needed, pump it down, fill it up, and go on our way.
If someone was doofus enough to burn thier hands, etc in the process, they shouldn't have a wrench in thier hands.
You know, once upon a time we were told smoking was good for us. 25 years ago isn't really relative anymore.
Side note about R12, always though it was heavier than air...seems it would sink to the ground, rather than dissolve in the air ...I dunno.
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Joined: Jul 1999
Posts: 5,183
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Originally posted by si_camaro
Water is heavier than air. Do you get wet when you look down a hose and turn it on?
Water is heavier than air. Do you get wet when you look down a hose and turn it on?
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From: Manahawkin/Hackensack, NJ
Car: 1987 IROC-Z
Engine: 305 LB9
Transmission: 5 Speed
Axle/Gears: 3.70 Posi BW 9 Bolt
yea my ac has been converted to r-34 or watever the new version is but i think im gunna think about this one for a little while. gotta swap my rearend first.
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