Question about 1999 Ford Expedition

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A/c low pressure quick disconnect location? 1999 ford expedition

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on the tube between the firewall and the a/c compressor. On some Fords the low pressure port is on the dryera/c low pressure quick disconnect location? - 2_bing.gif (aluminium cylinder). Good news is the low pressure and high pressure port are different sizes. You cannot mess it up.

Remember the flow for the a/c system is :
1. From the compressor a high pressure (HP) gas goes to the condenser in front of the radiator.
2. From the condenser a HP2_bing.gif liquid goes to an expansion device (orifice tube or expansion valve)
3. From expansion device the low pressure gas enters the firewall to the evaporator.
4. From evaporator the low pressure liquid/gas mixture goes through the dryer back to the compressor suction

Posted on May 29, 2010


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1 Answer

I need to find the service port for the a/c system on a 1999 Ford Expedition. The one up front and high will not allow the service quick-disconnect hose to connect.

do not try to fill through the high pressure port.

The low pressure port is on the side of the accumulator/drier. Please rate as solved if this is what you need.

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