Infiniti I30 Overheating


#1

Lately I have run across a difficult to diagnose problem with my 2001 Infiniti I 30. It seems that the cooling fan runs from the time the engine reaches operating temperature and it never cools the engine down such that the fan stops running. In addition, if I drive the car for about 1-2 hours nonstop on the highway it begins to overheat. The last time this happened I turned my heater on full and I was able to reduce the temperature enough to make it home without causing further damage(I hope!). I have replaced the thermostat twice, replaced the water pump and flushed the radiator, but the problem persists. I had a mechanic perform an engine diagnostic test, but he found nothing. I love the car, but I can’t drive it very far for fear of damaging the engine or getting stuck in the middle of nowhere. Can you offer any suggestions?


#2

Has the coolant service been done regularly? Maybe your radiator is clogged and needs replacement.


#3

Next on the list.