Question about 1999 Chevrolet Blazer

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Charging issues last year a mechanic charged the system with the environmentally safe refrigerant, and looked for leaks.. he could not find it. it took the entire summer to drain out so I figured I would buy the wallmart special recharge kit. I added the refrigerant to the low pressure port on the system (silvery cannister top left)... it's not holding the charge. or I need to evacuate what's in there before charging?? Help. the can made this sound easy.

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  • Ted437 Jun 16, 2009

    Where do I get dye?



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Recommend istall dye into system,charge with just enough r134-A (cheapest at walmart.then let ac run for 30 min. after that inspect with black light for a green substance at all ac components.if none found look at ac drain for green residue.Best way to isolate ac leaks.

Posted on Jun 16, 2009

  • Tommy Cude Jun 17, 2009

    Locale parts house.



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1 Answer

How much R134a should I add to 2000 toyota? My a/c wont charge

Not sure I understand. R134a is the refrigerant. So what else are you adding? The best solution is to find the leak and repair it. Leaks will continually become worse. Your system may not hold anything anymore. However having to much refrigerant will overcharge the system and not allow it to cool. All systems hold different amounts, there should be a sticker under the hood that tells you how many pounds the system holds.

Apr 04, 2013 | 2000 Toyota Celica

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During the replacement of my radiator, the ac line was knocked lose. Do I need to a specialist to refill the freon? I have a 2001 300M

The correct answer is "yes".

The backyard mechanic answer is this:
Reconnect all hoses.
Use a recharge kit with the engine off and just put some pressure back into the system, keeping the Refrigerant can upright. Check for any leaks with soapy water by the repaired connection.

If no leaks, you know have to purge the system. The correct way is to evacuate the air with a vacuum pump. If you don't have that, the alternative is to remove the kit from the charge port. Carefully press in the small pin in the center of the port to open the valve and release all the gas you just charged in. Refill again like you did the first time, DONT run the engine, just let the refrigerant can pressurize the system again. The bleed it off again. Repeat this several times.

Each time you do that, you dilute the air that may have gotten into the system, and increase the percentage of refrigerant vapor. After about four or five times doing this, most of the air and moisture should be removed. Refill the system as described on your refill kit and you should be back in business.

Note: don't this with R-12 gas, it is an environmental hazard, R134a is not.

Dec 26, 2012 | 2001 Chrysler 300M

1 Answer

A/c does not work

The first thing you need to check is that the AC system has a charge and it hasn't leaked out, that can happen very quickly on this old of a car. Have a set of special AC gauges hooked up by a shop to determine the systems charge level. If it is low or gone then you will need to find the leak, this takes a special tool in many cases called a gas leak detector. Your system uses R12 type freon and it is no longer produced for environmental reasons, so you must buy and install a retrofit kit to use the new R134 refrigerant, doing this right is quite time invloved and expensive. When all is said andone you will likely be out about $1000.00 for the repair job.

Jun 20, 2012 | 1991 Honda Accord

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The a/c is blowing hot air freon or compressor?

On this year Buick the AC compressor front shaft seal is prone to leaks and this allows the R134 refrigerant to leak by the seal, with no charge the compressor will not run, the system is lubricated by oil that mixes with the refrigerant, no charge and no lubrication, so the system turns the compressor off. You can replace the compressor fairly cheap (less than $100.00) by buying a rebuilt one on eBay, I did this with my Century last year and so far so good. The compressor comes out through the right front wheel well after the plastic liner is removed.

May 18, 2011 | 2001 Buick Century

1 Answer

How do you charge the a/c on a 2000 lincoln cont.

If you need to add or charge with refrigerant,you have a leak
Repairing the leak is the only environmentally responsible way to go.
If you try to add to the system, it won't take much, and you have no way of knowing how much is in the system.
You need a shop that is trained and has the equip to pull a vacuum,repair and charge properly

Sep 28, 2010 | 2000 Lincoln LS

1 Answer

I have tried putting Freon into the low port of a 2000 Cadillac Deville. When I input the fren, the air gets cold for maybe 10 minutes, then warms up again. A mechanic told me that I should be inputting...

If you charged the system threw the low side port your correctly doing it. The proof is that your getting cold air for ten minutes.Now if its only blowing cold for ten minutes you definately have a leak.
There are a couple of different ways to look for a leak.
But in your case because it turns hot in ten minutes its either a monster of a leak or the leak is the schrater valve your using as the input valve.
I recommend you take the vehicle to a repair shop that has a HVAC technician and have them diagnosis the problem and do the repair safely and properly .
First its illegal for an uncertified individual to service a/c system.
Its also dangerous. Unless your using a manifold set to service the system .Your at a high risk of bursting either that can of regrigerant or the hose that the stores sell you to charge the system. If you somehow manage to charge the system without a manifold gauge you probably had moisture enter the system which is the number one killer of any a/c system.
If you don't recovery the old refrigerant from the system and just add more in your now mixing contaminated refrigerant with clean refrigerant.
This causes a variety of problems.
The best way to do this is to have a trained professional do it. Its money well spent.
Remember if refrigerant comes in contact with your eyes it can cause blindess.

Jun 11, 2010 | 1999 Cadillac DeVille

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

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Aug 21, 2009 | 2003 Mercury Grand Marquis

1 Answer

R 134a

yea u can do this with can and charge hose just look for low side service port ususaly near ur receiver drier( looks like a silver can good luck

Jun 10, 2008 | 1994 Oldsmobile Cutlass Ciera

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