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Re: Why would radiator fan affect AC pressure? Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Why would radiator fan affect AC pressure?, Stan W., Sat, 28 Jul 2007 17:45:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Playing around with and filling A/C systems without proper tools and knowledge can be quite dangerous so be careful.
If you overfill the system and a hose break or the safety blow off valve opens, you can get pretty bad freeze burns from the freon rushing out.
Both high and low pressures fluctuate widely all depending on cooling fans running or not, if engine is idling or at high rpm and if the A/C compressor is on or off.
20 Psi drop difference is not uncommon to see when the cooling fan kicks in.
Anders
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