Air-Conditioning Excellence Automotive AC Pressure Chart for Success

I am using a manifold to do all the readings. Anyhow, anyone out there with info about how much psi the ac would need? I have a 2003 Ford Focus ... I see charts that show, at 90 degrees, a low side of approx. 30 psi and high side of 225. Another chart will show 50 PSI and 260 PSI. Turn the car on with your gauge hooked up there. IMO take the car to the shop... AC work is not something you should be doing without proper ... There may be vehicle specific pressure charts, but I've never seen one. All the charts I've seen show correct pressures at a give ambient ... Measure the ambient temperature and compare the reading with the pressure-temperature chart of R134a below: In my case, the ambient temperature ... ... pressure and low pressure sides of a 2005 GX470 air conditioner? ... Ahhhh, ok, it's a function of the refrigerant, not the vehicle. Makes ... Thus, if the gauge is reading high, then it indicates a problem with your compressor in that the low side isn't going low. When the A/C is fully ... ... vehicle said max oil charge is 9oz. ... Squirt in a can on a cool motor (that's not running- duh) and reference a 134 temp/pressure chart. ... vehicle you are working on. If this post is about bodywork, accident ... The temperature of the refrigerant determines its vapor pressure (aka ... ... readings when the car ... Most people will be inclided to add charge any time the performance of the automotive AC has decreased because the hoses ...