Question about 2001 Ford Taurus

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Cant find low pressure valve to add freon

Ac needs recharging, i have the right kind however cant seem to locate correct valve

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  • Ford Master
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Follow the larger ac line of the to sizes until u come to a port it is the low side ,is the smaller port this is what u want

Posted on Jun 28, 2009

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What is the correct pressure for freon in AC unit and what is the color of the cap where you add the freon?????


The charging port cap is usually blue, The charging fixture hose will not clip onto the wrong port, so you really can't mess that up. the pressure of a system as measured on the low side hose should be about 28-32 PSI with the system stabilized and engine at operating temperature.

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Hi I bought a used volve about 6 months ago. Lately when I use the ac the far left vent blows out warm air and it also is not blowing out as cold of air as it used to. I was going to add some more freon...


> I was going to add some more freon and the gauge that came with the can does not fit the valve. There are normally two valves on the AC lines; one is the low-pressure valve (inlet to the compressor), the other is a high pressure line leaving the compressor and going into the exchanger. The low pressure valve is the point at which Freon is added and pressure is measured with a single valve. The high pressure valve is customarily used only by service personal to determine compressor performance and should never be used to recharge the system; they are intentionally different to avoid rupturing the the Freon container. Trace all of the lines to be sure if you have found the right one to use for recharging and measuring the 'low' pressure side.

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Where is the low pressure port for the a/c located


If you can follow the a/c lines look for 2 valves, may have black or different colored caps on them. The small one is the low pressure port. If you are looking at recharging your ac system make sure that you have the a/c turned on full blast when you go to add the freon. Also pay attention to your a/c clutch. if it is clicking on and off for short periods at a rapid rate you definately need freon. You may also want to get freon with stop leak and leak detector added already so you can check for leak (in case you hadn't already thought of that)

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The low pressure refrigerant port is near the firewall2.gif, just after the receiver/dryer. You'll need a gauge and preferably an ac test manifold. You can use the manifold to add refrigerant up to the point where the system maintains the pressure level in the green area. There should be a blue cap on the low pressure valve.
I believe your malibu take's 12 ounce's of R134, don't over charger the system. You'll blow O rings and worst kill the A/C compressor.
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Where is the ac low pressure port to recharge the freon on a 1999 ford escort zx2?


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How do I recharge the AC freon on my own?


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