Searched for this but nothing came close to what I have going on. Replaced Comp, expansion valve, flushed and filled system with 134 last year. Worked great for a few weeks then just stopped working. Found a blown sub fan fuse, replaced the fuse and it worked for a couple more weeks. Now the system will not turn on at all. I have replaced the relay and the diode, AC switch light comes on so I'm guessing the switch is working. The cooling fan does not start and the idle no longer increases when switching the AC on either. I have checked the pressure switch and the system is holding freon just fine. Compressor does engaged when wired direct. What else am I missing?
88 LXi auto completely stock, all other electrical works.
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