98 Chevy Blazer, V6 Vortex 4x4 automatic. A/C compressor blew 2 years ago, replaced it and orifice tube has worked fine since until now. It works intermittent, which means you may start it up and it works fine for 20-30 minutes then stops blowing cold air. The compressor clutch releases before this happens, and it might just start blowing cold air again and when checked, the compressor clutch is kicked in and everything seems normal, only to stop blowing cold air agin later. When it works it works really good. Any ideas on this one? Thanks.
It could be your low pressure cycle switch is going bad. Check the connection to the switch and it's is located on the A/C Accumulator. The other thing to check is the A/C relay and that is located in the glove box. There is a panel in the glove box that say's relay, there is three relays in there and one of the out side relay's out of the three is the A/C. can not remember which one it is. The middle relay is the fuel pump and the other one is the third break light. Switch the two out side relays and see if your A/C get's better. the other thing too is if the R134a is just a little low, and needs to be topped off. Good luck and hope this helps. if your going to try to recharge the A/C system your self, keep in mind not to over charge.
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I forgot to mention this is an S10 Blazer, would that make any difference as to the relay locations? I can't find a glove box panel as described.
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