i observed the car over the weekend, and based sa mga recommendations nyo, eto yung mga napansin ko...

- radiator fan turns on 5-10 minutes after the temp gauge reaches the normal engine temp, but stays on for about less than a minute, then shuts off.

- sure ako na walang leak sa reservoir bottle kasi bagong palit lang yun.

- thermoswitch is also 100% working since its been replaced just recently. (less than a month pa lang)

- car doesnt overheat while in motion, tmataas lang temp when idle, e.g. while on queue sa toll gate, filling up for gas, before entering the gate, then the temp goes down again when in motion na ulit.

question: is it safe to say na pwedeng mag malfunction yung thermoswitch pag faulty yung thermostat? because im thinking about replacing the thermostat, per sabi kasi nung mekaniko nung nagpa overhaul ako ng radiator, ok pa raw yung thermostat at ang basis nya eh bukas raw ito pagdating ko - demonstated it by running water from a hose through the radiator with the upper hose taken off the thermostat and water was overflowing out of it, then after matapos yung overhaul, closed na yung thermostat ( he did the same overflowwing thinggamajig but this time there was no overflowing of H2O).

i know mura lang thermostat but i guess nakaka asar lang kse yung isa isa kang magpapalit ng parts na incorrectly diagnosed. ok pa pala tapos pinalitan na, just like me getting an overhaul dahil 100% sure DAW yung mechanic na yun yung cause, then before that, replaced the thermoswitch dahil yun lang daw reason kung bakit nauubos yung water sa radiator, dahil di umiikot yung fan when it should be... magkano nga pala pag sa CASA ko magpapadiagnose?

thanks for all the help....