[jasoninva]

Well, i'm back to square one AGAIN!! Drove home after delivering pizzas for a few hours and overdrive would not lock up again. It worked fine for two full days...day one with the heater running the whole time to exhaust the heat and a second after flushing the radiator. But now i'm back to the drawing board. I'm noticing that overdrive has no problem engaging when the car runs at a proper temperature, but when it gets too hot..no overdrive. It seems to peak at 210-215 and it seems to stay at that temp for a bit longer than it should. I put my hand on the heat vent in the car and I swear it seems hotter than normal...feels like it could burn you if it was only a few more degrees. Wonder what the cars temp should be on a flat highway going about 65...under 200?..i swear i remember it always hanging just under 200 when i first bought it...who knows.I had the thermostat replaced over a year ago. I'll try a new one and i'll flush out the system again. I don't know what else I could do. Suggestions would be a big help. The fact the tcc locks up and stays solidly locked up when temps are good really makes me wonder if the torque converter/transmission is the issue. I thought the car had a safety feature that prevented overdrive from working if temps were too high....am I wrong about that? All in all, where should I go from here?