Temp rises at 100kph

[v6dreamer]

Understanding engine temp.

Usually, thermostat start opening at 80-85C and is fully open at 90-95C.
Your fan switch is on ar 90-95C and off again at 85-89C.

Under normal conditions (outside temps <25 deg. centigrade and good airflow through radiator) the thermometer on the dashboard should be just over 70. If it goes towards 90, the radiator on the thermostat is bad. In exceptional cases the waterpump may be bad. Only extreme circumtances(very high outside temps, long climbs, no airflow to through the radiator) does meter go to 90. Even the coldest days or rainy season, the temps should reach at least 70. if not change the thermostat.

[mbeige]

I'd say thermostat is bad. Easier and cheaper to replace first than radiator. If thermostat is replaced and still does this have radiator checked, cleaned and pressure tested.

[speedyfix]

you radiator is clogged. replace it imo.

[padyak]

sir speedyfix is ryt, na experience ko din yung ganyan sa nlex, pero after overhauling the radiator nasa C na lang temp ko at di na tumataas.... goodluck.

[knight21]

+1 ako kay sir speedyfix, most probably clogged yung radiator mo kaya di maka-circulate properly ang coolant during high speeds...