How to recharge air conditioning with freon

Thats pretty high if the system is not running. Average pressure on the low and high side should be near outside air temp.
Normal low side is 30-40 psi and high side is 200-250 psi when the system is running and the freon charge is full.

Adding freon to a car requires connecting the low-side service valve first, followed by the high side, recovering the existing freon, evacuating the system of air and recharging the system with new freon.
You can use R-134a refrigerant for 1998 Ford Explorer. You can get all parts necessary for Ford Explorer at one place at http://www.carpartswarehouse.com/carparts/Ford/A-C_Condenser.html

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#ixzz0uLCDkUE8

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

You may have created an over charged condition and at this point the a/c compressor will cut off on high head pressures. This can be verified by installing gauges to the systems high and low side service taps and reading the pressures.An overcharged system will start the compressor briefly but soon cuts off once pressure goes to 350 - 400 lbs on the high side. Acceptable pressures for this system should be no greater than 250 high and low suction should drop to 40-50 psi.You might recover the charge and evacuate the system,then try bringing the charge back to proper level.A sight glass in the reciever drier really helps determining proper fill.Once all bubbles have dissipated from the sight glass during charging ,one should stop at that point to avoid overfilling.Too much freon is worse than a low charge especially in hot ambient conditions....

Must be Air-Condition System Lines/ Hoses leaking R12 Freon (gas).

MAYBE THE PULLY HUB BEARINGS FAILED OR
DUE TO VERY LOW R12 FREON (GAS ) will not work.
Because there is a switch in the receiver/dryer prevent AC from working when low R12 Freon present, to protect the system & compressor damages.

You must fix the leaks, before recharging it.

They must **** the old (residue) gases from the system & lines / hoses...... & stay in the vacuum pump 30 minutes to proof no more leaks.

Recharge some oil for the old type R12 Freon gas.

Before recharge it to 62-67 psi R12 Freon

See the web site like www.youtube.com/video site to see How they service & repair air-condition system?
Put the question to their search window.

This is the question u should.
How they service & repair air-condition system?


Regards;
MAR

This should be done by A/C certified mechanic. You will have to buy the guages, the freon cans and connect it to the high and low pressure attachments. Red is high and yellow is low.. The older systems just have a valve that looks like a tire valve.

the most common cause of course is a low system refrigerent charge, this would be due to a leak, the most common cause of leakage is the front shaft seal of the AC compressor

Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.

Benjamin

the place you need is closest to the condensor..that will be the low side.do not try to add freon to the high side as it will blow the lines. the low side is by the condensor the closest cap to it