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High pressure I attemted to charge a cars system when I realized I had a leak. It took two times before the leak was fixed. I would add 1/4 pound till the leak was fixed. When the leak was fixed and I attemted to charge the system the machine tries to purge air but can't! Now it tells me high pressure and will not do anything! Do I need to try to bleed the machines source tank?

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Yes, go ahead, it is one of the solution.This will restore
the normal function. send your e-mail for further assistance. Thanks and God bless u.

Posted on Oct 27, 2009

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2 Answers

How much freon does a 2002 tahoe require.it has rear ac


Some systems take around 54 ounces, 3 1/2 pounds. This when it is empty. To fill, I always use a set of gauges. The low pressure gauge you can buy with a can it not good to use. You can fill it to say 45 pounds pressure, which is around right at 85 degrees. But the high side could be reading 400 pounds. Something will blow out at that pressure.

Aug 02, 2015 | AC Cars & Trucks

1 Answer

A/C just went out. Worked fine earlier today,


Wow thats hot!! Ok want a quick fix? You sound like ya have a leak so lets see whats going on....buy 3 cans of freon 123a...they come in 1 pound cans...get a low pressure charge hose.
here"s what you will do,
buy 1 can of leak detector freon 134a(1 Lb.)
1 can of synthetic freon 134a with oil(1Lb.)
1 can of 134a freon with sealer
Find the low fill port the fitting will only fit on low side....there are two one is the high one is the low they both have screw off caps use the bigger one...thread the first can with leak detect. in it and fill it through the port, turn a/c on high blow full a/c, jump out the compressor low pressure cut out switch...if you buy your stuff from Auto Zone the guy will show you which switch that is on a diagram he can supply for free just ask, next fill the leak stop can, then the one with a/c oil.
Should be cold, drive a while or until it leaks out and spot the dye coloration coming out of the system showing you where the leak is, bleed off the system repair the leak and refill like I just told you use up to 2 3/4 cans max.
Happy Motoring!!

Jun 22, 2010 | 2003 Suzuki Aerio

1 Answer

A/C COMPRESSOR WONT ENGAGE. NEW A/C COMPRESSOR INSTALLED . Checked fuse panel, fuse OK.


Diod you charge the a/c, if its low, by that I mean if it needs a charge the compressor has a cut out switch inline with the power wire going to the a/c compressor clutch(it can also be referred to as a fuse depending on who you arer speaking with), it is there to protect the compressor from burning out.
You see if the a/c system has a leak....any air conditioning system not just a car.... along with the freon leaking out a/c compressor oil can also leak out with it especially if its on the high side lines or the compressor front shaft seal(which is behind the a/c clutch). That is why it is equally important to buy a 1 pound can of freon + oil combo and a freon 1 pound can with leak dye combo in it, if its down a little in other words the compressor turns on but isn't real cold then only install the freon + leak dye as the leak dye will travel through the system and expose its colors when it appears at the site of the leak, giving you a visual on where the leak is.
try adding some freon to the "low" pressure side of the suction lines of the compressor(larger lines with a larger fill port, be certain to purchase the proper fill hose and attachment needed for your particular car.
The auto parts store will assist you in this proceedure.
Once
You may have to locate the a/c compressor cut out I think its a threaded one that has a black electrical connector on top, remove the connector and jump the wires together to get the compressor to turn, then add the freon. Walla, the compressor is working and accepting the charge, if by jumping out the low pressure cut out switch no sound is even heard at the clutch you may have to replace the low switch as well.
This test also tells you if the a/c compressor and clutch are working properly, if you jump it out and it doesnt engage replace the clutch. You will need a puller, Auto Zone will lend you the tools for the job free if you buy the parts from them,cool aye?
Happy Motoring!!

Jun 12, 2010 | 1995 Oldsmobile Cutlass Ciera

1 Answer

How do I fix a Air condition blow out hot air?


Go to your local auto parts purchase a a/c charge kit for about $69.00, find the low pressure(suction) fill port, there are two ports in every a/c system one is a low pressure side used primarily to fill a system with freon 123a or the like and it is the larger valve mounted on the line, then there is the dangerous high side valve, this is a smaller diameter valve mounted to a smaller diamet a/c line, this is under extreme pressure so donot attempt to fill this high side with freon as it can backfire on you and cause injury.
The low side fill kit will not fit on the high side port so thank godness for that.
start the vehicle put the a/c on full cold high blow fan speed, start filling the low side with a can of 123a freon+oil additive, which equals one pound of freon and check the inside a/c vents, getting cold? If its perfect then you are done, the system may have a very small slow leak and if it only takes a one pound can to fill it once or twice a year you are ok, if it takes more you may want to add a second pound can of freon 134a containing a dye additive that will work its way into the system and show you where the leaks are by exposing a color once it hits the air coming out of the systems defective seals etc.,also they sell a sealer + freon one pound can that can be used to try to fix the leak without having to get too expensive on the repairs.
A car's air conditioning system only hold like 2 3/4 pounds of freon, so in the event you happen to over fill the system a high pressure blow valve usually mounted on the a/c compressor will purge off the excess, but let me warn you they blow off without any warning and can startle you. Always think safety first, wear protective equipment. Work Smart, Work Safe.
Happy Motoring!!!

May 20, 2010 | 2002 Ford Escort

2 Answers

When i turn on ac it blows hot air


Normally due to low freon. Also, notice if the a/c compressor clutch engages, as it will not if the freon is low.

Jun 05, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

How can i recharge the air conditioner? Where is the hose located?


Ok if you want to do a home repair in hopes of saving yourself a lot of money and with hopes your system is not in major trouble, here goes:
First step buy 3 types of 1 lb. cans of refrigerant R134a at a parts store, 1 can of leak detector freon combination, and if possible 1 can freon/air conditioning oil combination freon along with 1 can of straight r134a freon.
The store will sell you a charge hose with a cheap type of charge gauge attachment and fittings to attach to your system for the re-charge.
Providing your system is low on freon,First, with the vehicle running and the a/c on full cold, high fan, install the 1 lb. can of freon/oil combo first only charging through the low pressure side of the system never through the thin line high pressure side as the pressure from the high side can enter the cgharging freon can and explode it like a bomb,(this low side line is the larger hose and the low side charging hose fitting the parts store sells you will only screw onto the low side charge valve which is normally marked "low" on the top of the plastic dust cap that is factory installed(hand screwed) on the low side valve fitting.
Secondly after the oil/combo can is emptied into the low side and you of course are wearing mechanics hand protection gloves and eye protection googles, then and only then will you install the leak dector 1 lb. freon can combo.
Third you will install the last 1 lb can of r134a freon, however your vehicle will not allow the whole last pound of freon into its system by means of a pressure relief blow valve that will automatically blow off any excess pressure once the system over fills, the system typically holds approximately 2.75 lbs. of freon.
If you have successfully installed the above freon into the system it should be up and running providing the system is in fairly good working order, by that I mean it may have a very slow leak that allowed the freon tio originally escape in the first place causing you to refill it, and if it does have a leak the leak detector die that you installed into the system should leak out from wherever it may be escaping from, indicating the place of needed repair by means of a red or blue, or whatever other designated coloration the die gives out from the leaking area.
Please note: Not all home charging techniques typically work as there are many mechanical failure factors in an a/c system that may require a certified a/c technician to determine exactly why your system is not working should the home remedy fail.
I hope this helps you and remember to always work safe with eye and hand protection especially around freon gases which become extremely cold and can cause frost bite when contacting with the bare skin.

May 08, 2010 | 2001 Cadillac DeVille

1 Answer

Where exactly is the low port for the air conditioner on a 1998 Pontiac grand am


Normally you cannot charge the high port as the connection will not fit. Also if the A/C is working the high port gets much hotter than the low port. Also on the plastic cap it will have an L on the low pressure port and an H on the high pressure side. Do not try to recharge it unless you are 100% sure. If you are needing to recharge the system then it has a leak that needs to be repaired. It is technically illegal to add refrigerant to a system with a leak without first repairing the leak. So, my advice is to get the leak fixed first and then have the system charged by a professional with the proper equipment and training. But the choice is yours.

Apr 16, 2010 | 1998 Pontiac Grand Am

2 Answers

I need to bypass so i can recharge the system the freon is to low


try a jumper wire across pressure switch terminals.

Aug 15, 2009 | 2006 Dodge Caravan

2 Answers

AC not cooling in '98 blazer


I think you have a leak. I would get some dye . The local auto parts store sells it with a black light. Then check for leaks .

Good luck

Jul 14, 2009 | 1998 Chevrolet Blazer

1 Answer

5 ton goodman ac unit


You MUST WEIGH IN THE NEW CHARGE OF R-22. There should be a label on the side of the a/c unit that states what the factory charge was. This is only a starting point. Once you have the factory charge in the system, then turn on the unit and allow it to stabilize (5 min) . Check pressure on low side and check teperature on low side pipe. Temperature of pipe should be 8 to 15 degrees above what the boiling point of the refrigerant is for the current pressure you are reading. If the temperature is more than 15 degrees, add R-22 in 4oz increments allowing 5min in between each time you add until you are in the "zone". When you do this, your head pressure needs to be 225-250. if you need to cover the coil or block the outdoor fan to do this then do it. Hook up the vacuum pump and start over

Jun 17, 2008 | Goodman Heating & Cooling

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