Hello, I am new to this forum, i could not find other ppl had the same issue, i own a 2001 LC 100 4.2D 1HD FTE, my car temp gauge just can't raise to the midle or (regular) temp even i drove the car for over an hour, the temp gauge will always stay below the middle, and the heater is not working either, it can only blow a bit of warm air out...Not sure what's wrong with it. Thank you guys