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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Hissing sound when ac is turned onViews : 1802 Replies : 10Users Viewing This Thread : |
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Jun 26th, 2022, 02:56 | #11 |
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(a) The easiest way - XC90 comes with fluorescent dye in the compressor oil so you can run around with a black light to look for leaks.
(b) When you get a regas, they will extract existing gas, pull and hold a vacuum to check for leaks. The problem is that vacuum will often pull cracks closed and it is poor for detecting slow leaks. (c) The most effective way - add hydrogen/nitrogen mix and check with H2 detector. (d) Use a refrigerant detector/sniffer. Have not done this but heard it is less sensitive than the above. |
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