Question about 1993 Buick Century

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Recharging the air conditioning which is the low pressure side?

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This job requires special tools and special training. If you lack either, you risk SERIOUS personal injury. Injury comes VERY EASILY!

You need to address oil levels, proper and legal refrigerant recovery, system evacuation, and recharge.

You were planning to also replace the receiver/dryer, correct? It also needs the oil in it measured and incorporated into the amount of oil (in %) that would need to be added. FAILURE to address these and other issues will guarantee premature system failure and likely compressor damage.

Take this job to a qualified shop.

Sorry

Posted on Sep 12, 2010

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Recharge the air conditioner


Instructions
    • 1Start the recharging process with any left over freon you may still have. Open the Civic's hood and attach the kit to the Civic's low side port. Then, set the kit onto a place in the engine compartment where nothing can move or shift once the engine has been cranked.
    • 2Start the Civic and let the engine run until it reaches its normal operational temperature.

      • Single Pressure Gauges for Indl., Commercial & Specialty Uses

    • 3Turn on the air conditioning to its coldest and hardest-blowing settings. Place a thermometer into one of the Civic's air conditioning vents and monitor how the temperature drops. Once the air conditioning's temperature reaches a level, constant degree, remove the thermometer.
    • 4Open all four doors on the Civic. This will allow any colder air generated to escape, and this will keep the Civic's air conditioning for accidentally cycling off while you recharge the refrigerant levels.
    • 5Turn the recharging kit's valve all the way down and let the refrigerant charge into the Civic's air conditioning periodically, shut the valve and look at the kit's gauge. This will allow you to monitor the recharging process. Allow at least one minute to elapse between refrigerant charges into the system.
    • 6Shut the valve of the canister, once it has become depleted. Disconnect the kit from the low side port.
    • 7Detach the hose, gauge, and valve from the empty canister and attach them to a new canister of refrigerant. Reattach the kit's hose to the Civic's low side port and continue recharging the system, allowing a minute between individual charges. The can itself can potentially grow very cold and hard to hold, even with gloves. Should this happen, wrap the can in a towel warmed in water. Ring out excess water before wrapping the canister.
    • 8Place you thermometer into one of the Civic's air conditioning ducts. Keep an eye on the falling temperature within the Civic's air conditioning system. The system is charged when the temperature hits 40 degrees. Also, within the engine compartment, the Civic's air conditioning aluminum tubing become uniformly cold.
    • 9Shut the recharging kit's valve and remove the kit from the low side port, once the system has been successfully recharged. Shut down the Civic's air conditioning, turn the engine off, and remove your key from the Civic's ignition. Also, shut all the doors

Jun 21, 2012 | 1998 Honda Civic

2 Answers

I have a 1997 oldsmobile achieva. I am trying to locate the car's low pressure valve to recharge the air conditioning with freon. Where is it? Thank you


The low and high side valves are located under the air filterbox, if you open the hood and remove the air filter box you will see the valves ,good day

May 26, 2011 | Oldsmobile Achieva Cars & Trucks

2 Answers

How to recharge recharge airconditioner


Hi, determine if your car uses R134 or R12 refrigerant. You will notice screw type connectors on the both the High Pressure Side and Low Pressure Side lines in models using R12 refrigerant. R134 compatible models have quick connect valves on both sides. Models made before 1995 may use the old R12 refrigerant. If this is the case, you must have your Chrysler's air conditioning system retrofitted to use R134 refrigerant. Mixing R12 and R134 refrigerants is dangerous and may cause damage to your vehicle. Check your air conditioning system pressure using an automotive air conditioning pressure gauge. Keep in mind that in order to get an accurate reading, the air conditioner has be turned on the coldest setting with maximum blowing power. Remove the Low Pressure Side port valve cap and set it aside. The location of the port varies, but it is usually in front of the engine block. Attach the refill hose to the port on the Low Pressure Side of the air conditioning system. The Low Pressure Side port is smaller the High Pressure Side port. Because the ports are different sizes, the refill kit hose should fit only on the Low Pressure Side port. Additionally, the High Pressure Side port will usually have a red cap or be marked with an H or the word High Allow the air conditioner to **** the refrigerant out of the can by slowly turning the valve on the refill kit hose. Pay attention to the way you hold the can. Most kits will have you hold the can upright when you recharge the air conditioning system. It may take as long as 10 minutes to empty a single can. Turn the valve to the off position and remove the refill hose from the port. Recap the port before closing the hood. Let the air conditioner stay on for at least 30 minutes. This allows the refrigerant to move throughout the entire system.
Take care

Aug 03, 2010 | 2006 Chrysler Town & Country

2 Answers

I want to recharge my air conditioning in a 1991 cadillac deville


Here's what you do.

Get an R134a recharge kit or R134a recharge hose (with an optional gauge) that has the adapters to put on to the low side port located near the firewall on the passenger side.

If the system is down already, the computer may have disabled the compressor.

To reenable the compressor, disconnect the battery for a few minutes and reconnect.

Charge the system with about 2 or 3 11 oz. or so cans of R134a while the car is running and the temperature is set to the lowest (say 60 deg. F).

If your recharge hose has a gauge on it, the right pressure should be in the green area ranging from 25 psi to 45 psi on the low side when the compressor is running.


Jun 10, 2010 | 1991 Cadillac DeVille

1 Answer

2007 Ram Truck: where is low side of ac to recharge in 2007 dodge ...


The Low Pressure Side connector will be smaller than the High Pressure Side connector so the refill hose will fit properly only on the Low Pressure Side.
Read more: How to Recharge Air Conditioning with Freon in a Dodge Ram | eHow.com http://www.ehow.com/how_4484569_recharge-air-conditioning-freon-dodge.html#ixzz0uLXJnwvE

May 17, 2010 | 2007 Dodge Ram Truck

1 Answer

Air conditioning doesn't keep it cool


Your system may be low on R134a and needs to be recharged, If you did recharge it with the recharge kit and you over charged it, you'll have poor a/c performance too. The low pressure side should have 30psi to 50psi and the high pressure side should have 150psi to 200psi, any other readings will give low a/c performance and if to high of pressure can lead to system damage. Good luck and hope this helps. 

Jun 23, 2009 | 1998 Honda Accord

1 Answer

Air Conditioning


It's on the back wall under the hood on the drivers side. I just recharged mine.

Jun 01, 2009 | 2001 Oldsmobile Intrigue

1 Answer

Would like to recharge my air conditioning on my 2001 nissian maxima that has 117,000 on it blows hot air when air conditioning is turned on.


You will need R134a, and a filler hose. Charge the system on the low pressure side, it should have a blue cap on the charge point.
Your filler hose will only fit the low pressure side, just in case the cap has been removed.

May 23, 2009 | 2001 Nissan Maxima

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