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You are watching: How to put freon in a chevy truck


I have a 2002 Silverado with a 5.3L engine. The A/C is not working and I want to inspect the push on both the low and high side, but can not discover the low side port. There space 2 ports (both a large and tiny size) on the metal line to run from the evaporator to the condenser, however I can"t find a port in between the compressor and the evaporator, which need to be the low side. Please let me understand where to short side harbor is.
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I simply tried to recharge my A\C system, and Larry"s right- among the harbor is high, one is low. If friend buy a recharge have the right to from the auto components store, the will just fit on the low side, which, if ns remember right, is the largest of the 2 fittings.

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If you"re walking to add freon it"s finest to do this through the engine running, a/c on max and blower top top high. If you have actually rear air, have that on complete blast, too. Include to the short side and also monitor high side pressure. High side pressure must be 2.2 to 2.5 time the approximately temperature. If it"s 100 levels then the high side pressure need to be between 220 and 250 psi. Start by targeting the lower end of that, it"s simpler to add than remove.When friend stop adding your short side must be in between 30 and also 40 psi.
Thanks for the good advice.....all of the equipment I have dealt with in the past did not have actually the lo and hi political parties on the exact same tube 12" apart.Here is the full story. That is my mom"s truck and also a shop told her she needed an A/C compressor and it would cost $1000. I took a look in ~ it and the belt was missing, for this reason they couldn"t know the compressor to be bad. The belt broke since the idler wheel bearing seized up, a very easy and cheap fix. However the A/C quiet didn"t job-related so I examine the freon and it to be low so i tried to include some, but it wouldn"t take it it indigenous the short side, which cause my concern of wherein the short side was. In the process of measuring the push on both the hi and lo political parties I found the hello side port was leaking so I changed that last night and also I require to acquire pump this day to evacuate and recharge. I likewise have learned the it was not taking a charge from the low side because you have to brief out the short side pressure switch to acquire the compressor to absent in. It will certainly be 100F with high humidity because that the next 3 days so hope a recharge is all that is required!