Normal
experienced the same problem 2 months after i change the thermostat, which later lead to engine overhaul, problem still continue until my mechanic change another thermostat, fine for a month then overheat problem start again, to cut story short, found out the thermostat is of lousy quality, can't remember the brand but it start with "w" something, FYI after i change to behr brand, car is fine again.
