On top of your air conditioning accumulator ("can") on the passenger side of the engine, around 5 inches or so from your heater/air conditioning electric fan motor. It has a plastic cap covering the valve.
Freon is added through the low side pressure port. A gauge will be needed to check that the system is not overfilled. The Freon and gauge can be bought together as a kit.
Either buy the R-12 off eBay or use Freeze 12..................
You can put Freon into your air conditioning system through the low pressure port. The low pressure port can be found on the top of your air conditioning compressor.
freon for 1999 ford explorer =========================== r134a ( Helpfull )
It is illegal to use #12 due to damage to ozone layer
R-134a
it is 134-a
On a 1996 Ford Explorer : ( r134a )
R134a
R134a
R134a.
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