Overheating after 350km

by Diana

I have a 2008 automatic Jimny and I regularly do a 400km drive. The car goes well until around the 350km mark when it starts to overheat badly and I have to nurse it to my destination. Two different mechanics have checked it over and say they can find nothing obviously wrong. It has been tested for its head gasket and that is intact. Any ideas what could be causing this problem?

Comments for Overheating after 350km

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Engine internal sludge
by: rayzza3

Sounds like internal engine sludge build up .this happens on old diesel engines especially Nissan 4x4 's because they run quite cool so the oil does not get to operating temp and sludge's. the cause is usually the engine thermostat. So flush engine with flushing compound from auto pro spares shop, change thermostat and get original type!!
hope this helps Rayzza3

same experience
by: andre cloete

in 2015 i had the same problem here in south africa. although the air temperature was above 41 C. it was very warm period. But us was worse than 350. It was when i was running long uphills at 120kph.

after vacation, arriving home. I took out the radiator, cleaned it in and outside and make sure the fins, that was bend from fanbelt changes, were put straight. On a short trip there was no problem again. However, since my vacations are a 1000km, plus, from home, i added another radiator to never get this again.

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