update..problem solve..
for those having this same problem..the main culprit is the rad fan..for this car la..if other car maybe differ..
but..solve it the hard way for my friend..the car overheat one day at kesas..go workshop open engine..
campro engine overheat..block n head bengkok already..major overhaul, skim head, block n piston..
finish install back..rad fan same problem..not stopping..rad fan relay got ticking..try to change rad fan motor..
boom problem solve..maybe got hantu inside..hehehe..