Ranger just made a great post on #39. I recently bought a neon with a bad transmission for my son. I put a new transmission in it and was great for 3 weeks. One day he called and said it just overheated. I went to it, refilled the coolant, and drove it for another week with out a hiccup. A week later, another boil the coolant out of it incident. I changed the thermostat and verified the fans working and always on when the a/c was on. While I was in the car idling, it would never overheat, even after an hour of idling at 75 degrees. While I was checking it one night (after the 3rd overheat, on a hot night) the fan kicked on while I was standing in front of it. It was blowing the air out the radiator and not pulling it in and about melted my legs. Turns out, when previous owner took fans out to troubleshoot the tranny, He just yanked wires out of plug instead of unsnapping the plug like a smart one would do. When he reinstalled them, he reversed the wires causing the fans to run backwards. Pretty hard to push air out the radiator going down the road. Verify the air is being pulled through the radiator. Hard lesson learned but proud to have solved it! This was no big block, but it was a nice lesson!
