here is the dilema: In mehran the relay of fan can go out like kabhi bhi and you never know your fan is working or not unless it is direct. the second problem is temperature gauge, even in zero meter cars, temperature gauge shows faulty reading. sometimes it wont even move form C position. so to be safe people do this juggarh k they remove thermo and make fan automatic to be on safe side(for short term).
so the bottom line is PS people should be ashamed on the shoddy quality of mehran especially at those parts where quality matters alot.