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06-25-2007, 07:59 PM
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#1 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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what am i doing wrong
installed my ac compressor, made sure that it was coming on and engaging. Everything works fine, started trying to out freon in it, but it is not sucking it out of the can. The low side it the one on top of the compressor on a factory setup right
 chico
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1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold 
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06-25-2007, 08:05 PM
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#2 |
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Active Member
Join Date: Apr 2006
Location: Pendleton, OR
Posts: 243
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Re: what am i doing wrong
You still need to pull a vacuum on you system to get the freon in. You will need to rent, borrow, or buy a pump to do this.
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Mike T. Oregon 70 GMC Jimmy 4x4 70 Camaro LS1 plans in the works 71 RS/SS Camaro numbers matching 86 Chevy Silverado SWB 4x4 (454 merlin heads, 3/4 running gear upgrade, Detroit lockers front and rear) |
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06-25-2007, 08:08 PM
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#3 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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Re: what am i doing wrong
where can u rent one, or buy one? what does it look like
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1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold
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06-25-2007, 08:11 PM
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#4 |
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It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: what am i doing wrong
I would call it above the compressor yes, plus it is the only port that you can hook to with regular charging hose. Pressure side is a larger fitting. Having said that did you remove the plastic cups that block the intake and outlet on the back of the compessor where the main hoses bolt to the compressor and put pag oil in it before the install?
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c  Never drink down stream of the herd! Eric |
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06-25-2007, 08:18 PM
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#5 |
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Active Member
Join Date: Apr 2006
Location: Pendleton, OR
Posts: 243
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Re: what am i doing wrong
http://cgi.ebay.com/ebaymotors/R134A...37990841QQrdZ1
Here is one on Ebay. They are usually pretty cheap. Not sure on the quality of this item. I usually use an electric unit.
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Mike T. Oregon 70 GMC Jimmy 4x4 70 Camaro LS1 plans in the works 71 RS/SS Camaro numbers matching 86 Chevy Silverado SWB 4x4 (454 merlin heads, 3/4 running gear upgrade, Detroit lockers front and rear) Last edited by EFI70Blazer; 06-25-2007 at 08:27 PM. |
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06-25-2007, 08:19 PM
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#6 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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Re: what am i doing wrong
pulled it off another truck, so there was no plugs in it the first can i was trying to put in had pag oil in it
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1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold
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06-25-2007, 08:23 PM
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#7 |
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It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: what am i doing wrong
hummm. I have done this same thing before with little to no problems. If you need a vacuum to get it to take freon, then why can you recharge a system that has leaked out? No vacuum there. The vacuum pump is for recovery, is it not?
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c Never drink down stream of the herd! Eric Last edited by eedgell; 06-25-2007 at 08:25 PM. |
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06-25-2007, 08:30 PM
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#8 |
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Active Member
Join Date: Apr 2006
Location: Pendleton, OR
Posts: 243
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Re: what am i doing wrong
If you still have some freon left in there and the system was not opened, it will usually take freon. I have had better luck putting a vacuum on the system first. The pump is also not for recovery, basically it just removes moisture and puts vacuum on the system.
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Mike T. Oregon 70 GMC Jimmy 4x4 70 Camaro LS1 plans in the works 71 RS/SS Camaro numbers matching 86 Chevy Silverado SWB 4x4 (454 merlin heads, 3/4 running gear upgrade, Detroit lockers front and rear) Last edited by EFI70Blazer; 06-25-2007 at 08:32 PM. |
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06-25-2007, 08:37 PM
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#9 |
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It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: what am i doing wrong
Cool. Never done it that way on either a new pump or used pump install, but I will have to try it next time if it works better.[vacuum on the system]
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c Never drink down stream of the herd! Eric |
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06-25-2007, 08:37 PM
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#10 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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Re: what am i doing wrong
do any part stores have it, wonder will a part store do it if I have my own freon
__________________
1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold
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06-25-2007, 08:54 PM
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#11 |
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Registered User
Join Date: Apr 2007
Location: houston,tx
Posts: 15
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Re: what am i doing wrong
I just normaly read the posts but when an a/c question comes up I will jump in. If you do not pull a complete vacuum on the system you will not get all of the moisture out, Also the vacuum will get all the air out. The air contains nitrogen which is a non compressable gas, with the nitrogen in the system it will heat up cause a higher than normal head pressure and it might work for a time but it will quit. here in Houston, Texas you can rent a vacuum pump from AutoZone. I have repaired many a/c's here and pulling the system down is key. PM me if you have any questions
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06-25-2007, 08:59 PM
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#12 |
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It's the air up here
Join Date: Mar 2007
Location: Western Colorado
Posts: 710
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Re: what am i doing wrong
Basicfish, Can you post how this vacuum process should be done?
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1971 cheyenne k10 4 speed np 205 454 BB factory a/c Never drink down stream of the herd! Eric |
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06-25-2007, 09:07 PM
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#13 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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Re: what am i doing wrong
basicfish pm sent
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1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold
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06-25-2007, 09:33 PM
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#14 |
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chrome makes it go FASTER!
Join Date: Feb 2007
Location: Cleveland Tennessee
Posts: 2,884
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Re: what am i doing wrong
I second the request for a how-to
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She can't cook and she won't clean. But she looks good in a skirt and she brings me beer. She can stay for now. EDIT:: But she left me anyway, So forget her. 1962 GMC Stepside V6 4 speed My rolling resto thread http://67-72chevytrucks.com/vboard/s...d.php?t=324226 My old farm truck http://67-72chevytrucks.com/vboard/s...=1#post3465005 |
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06-25-2007, 10:58 PM
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#15 |
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Registered User
Join Date: Apr 2007
Location: houston,tx
Posts: 15
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Re: what am i doing wrong
I will work up a how to recharge a system may be a few days I will have to get some photos
take care Ron |
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06-27-2007, 05:39 PM
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#16 |
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Registered User
Join Date: Feb 2006
Location: nashville
Posts: 217
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Re: what am i doing wrong
went to the parts stores asking about a vaccum pump, and could I just pour the pag oil in the compressor since mine was not sucking it in, and they were no help they were asking dumb questions like do you have the air condition on and was I on the low side. Is there anywhere around Nashville that I can go and let the do it pretty reasonable
__________________
1997 pontiac grand prix gt (daily driver) for now; 2004 dodge ram quad cab (wife's truck) 4.7; 2000 pontiac booneville (wife daily driver) 1972 chevy cheyenne 350 bored 40 over 700r trans 373 gears ( posi) soon to be daily driver; 2002 gsxr750 sold
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06-27-2007, 06:36 PM
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#17 |
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member #16
 
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: what am i doing wrong
paaw, the advice you got from basicfish is right on. One other thing is if the system was open to atmosphere for any amount of time the dryer will need replacing. It will be contaminated and not work. Heres a link that might be of help charging your A/C. Goood luck.
http://www.carcare.org/Climate_Control/ac_dryer.shtml
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors  http://www.flickr.com/photos/1745471...7602865984234/ |
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06-27-2007, 06:42 PM
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#18 |
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Registered User
Join Date: May 2006
Location: at work
Posts: 2,552
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Re: what am i doing wrong
the vaccum pump is to pull a vaccum to pull unwanted moisture and to see if it will hold (any leaks). As for as the oil is concerned you can buy freon with the oil in it. you need to make sure you have the right oil and not to put too much.
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R.I.P. Killer 71 10/26/07 |
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