Check to see if all the R-134a leaks out (meaning there's nothing in the loop to carry away heat). Leaks are easy to spot but not easy to fix without pulling things apart. Most auto-supply stores carry a fluorescent dye that can be added to the system to check for leaks, and it will have instructions for use on the can. If there's a bad enough leak, the system will have no pressure in it at all. Find the low-side valve and with a gauge check the PSI level.
- Yellow glasses and a ultraviolet light will be needed to find leaks with dye. Electronic leak detectors are also available.
- Do not use anything else to poke in the valve to see if it will come out, this is illegal. It's called venting.
Thank you for reading article How to Fix Your Car's Air Conditioner: 7 Steps - wikiHow
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