I know there are some common resolutions, so you need to understand\nthe history first.\n\n94 Saturn 4 dr / AT\n\ninherited the car from step daughter and thought youngest could fix'er\nup and have his first car. The boyfriend that ran it into the ground\nhad jumped the engine cooling fan over to the A/C supposedly. I did\nfind evidence of wire splicing and the like from the cooling fan.\n\nPROB:\n- A/C compressor clutch won't engage (will engage if jumped) when A/C\nbutton turned on.\n- Cooling fan won't come on even past 3/4 on temp gauge (will come on\nif jumped)\n\nHAVE TRIED:\n- Replaced the coolant temp sensor with one of the all brass ones\n- Verified that both A/C and Fan relays are good\n- Jumped the A/C unit and verified that the clutch does engage\n- Verified continuity from compressor back to relay\n- Replaced the PCM\n- Replaced the A/C board behind the controls (could see hot spots in 2\nplaces and the circuit was broken) Light now comes on when A/C pushed,\nbut clutch doesn't engage.\n- Verified that cooling fan does work when jumped.\n\nI know these can be somewhat related anyhow, but I'm afraid this\n"mechanic" boyfriend of hers really screwed some stuff up here. At\nthis point, all I can guess is that there is a wire problem between\nthe relay/fuse block and the A/C board behind the controls.\n\nI did notice that this particular year had another black wire spliced\nin (from factory - verified by comparing to others in junk yard) to\nthe green wire going to compressor. I'm guessing that this is so that\nwhen A/C is on, PCM or Cooling fan relay ensures that cooling fan is\non.\n\nPlease pass on any ideas or experiences. We've got it running great\nexcept for the overheating and A/C issue.