Question about 1997 Pontiac Sunfire

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How to add refrigerant to air conditioning system

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First look under hood on passenger side you will see low side port with blue cap. low charge port is on the refrigerant line going to the accumulator.buy charge kit with gauge dont over charge add too refrigerant.low side pressure should not over exceed past 40 psi when buy charge kit its simple easy just start engine let it get operating temperature then turn on AC max high cool look under hood you should see cooling fan running and AC COMPRESSOR CLUTCH engage if not.dont charge it.because if AC system completely out of refrigerant you have leak in system let a garage check it out.because the charge kit not too cheap if you charge system have leak you will lose money. refrigerant will just leak out.if all is good AC switch on max cool mode the cooling fan running AC COMPRESSOR CLUTCH engage. just remove low side port blue cap add refrigerant R 134 until feel cool air coming out air vents then your system getting charge watch low side gauge keep it at least 38 - 40 psi. dont over charge. wear safety glasses R 134 will cause blindness get in eyes dont inhale gas its deadly be out open where you have good fresh air.

Posted on Jul 11, 2013

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You need the freeon hose and a can of freeon. If you look under your hood, to the left, there should be a tube running front to back. On this tube, I believe there is a green cap and a blue, and there are tags attached to either one. One should say EVAP and the other should say refrigerant or something like this. Take the tap off the tube. Leave the car off. Attach the hose to the can, but don't turn the valve on the hose yet. After you've done that, attach the other end of the hose onto the tube under the hood. After you've attached it to the car, turn the car on. WEAR GOGGLES!!! After the car is warmed up a bit, turn the air conditioning on. Go back to the hood of the car, and turn the valve slowly on the charging hose until the it pierces the can. You'll hear a rush of gas. It's easier to do this if you buy the hose with the thermometer attached to it. This is for people who are inexperienced at adding freeon. The EVAP inlet and the accumulator surface need to be the same temp. It should be charged to at least 40 fahrenheit. When the can is empty, turn the valve shut, and then release the hose from the tube. Obviously, put the cap back on. You should be good to go!!

Posted on Jul 10, 2013

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Determine the type of refrigerant, conversion kits are available but not an easy job, most parts stores have refrigerant and connectors to add to your system, follow the directions on the can.

Posted on Jul 10, 2013

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If you need to add, you have a leak & are poluting
the atmosphere

Have the system evacuated,repaired & properly charged

You have no way to force an unknown amount into the system
& may ruin it, by over filling or letting air in

A/C work of any kind ,on any product, is for the trained people
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Hi have an 04 hyundai tiburon i dont know where to locate where to put freon for my aid condtioner


STEPS TO CHARGING YOUR CARS COOLING SYSTEM:

STEP 1) Look under the hood of you car on the left side of your cars engine. There should be two stainless steel lines coming from a stainless steel cylinder to your cars compressor. The two lines have plastic dust caps on them sometimes they are blue or black. Usally the black has the larger diameter tubing that runs between the evaporator and the compressor. This will be the port that you hook the refrigerant hose up to.

STEP 2) Start your cars engine after you have secured the hose hook up to the air conditioner line port. Once the cars engine is running, turn your cars AC on to Max cool. Shake the can of coolant well. The gauge on the can of coolant should read in the blue but if it is in the green your air conditioners pressure will be between 0-25 pounds per square inch. This means you will have to add refrigerant to the compressor.

If your cars air conditioner pressure is in the blue. The system has the proper amount of refrigerant and you do not need to add. If the gauge reads in the yellow you may want to seek professional help because refrigerant is not what is wrong with the unit and is probably something more technical and most likely something that you do not want to attempt to do on your own. The red on the gauge means do not add any refrigerant at all and to seek professional help.

STEP 3) If the pressure of your air conditioning system is in the green it means it is safe to add the refrigerant. You should wait for your air conditioning compressor to switch on before squeezing the trigger to add the coolant. When the compressor switches off then release the trigger and repeat until your pressure gauge on the coolant can says that the coolant is in the proper range. If the needle on the gauge is in the top part of the blue you have successfully charged your cars air conditioning unit.

STEP 4) Release the attachment from the tubing port and replace the dust cap back in it's proper place and you are done. The cars air should be cool and your compressor should cut off and on less often. If problems persist you should consult a mechanic or someone that has experience with air conditioning systems.

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