Question about Ford Five Hundred

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A/c 2005 ford five hundred . when hooking up the gauge it reads between 55 & 60 border line yellow& red. the compressor is working. a/c is set on max .???????????????

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  • theyank Aug 20, 2010

    thanks. it stayed up after i added freon.



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If thats your low side pressure, and you dont have a high side gauge, thats only checking half the system.
If you using one of the cheap gauges that come from places like walmart and parts stores, as part of a can or kit, they arent that acurate, and you cant get a true picture without a set of manifold gauges.

If the system is not operating, add a little more refrigerant, and read the gauge with the can turned off, and the compressor running; you want to get the pressure around 30-40 degrees (depending on outside temp and humidity) while the compressor is running.

if system is ok, as you add a lil at a time, the low side pressure will come down as the system runs, if it does not come down below 50 while running you may be overcharged or have a block in the system, or a bad compressor

Posted on Aug 20, 2010


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