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Jimny overheating

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Nick94
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19 Jul 2017 00:30 #182839 by Nick94

Jimny overheating was created by Nick94

Hi guys
New to bigjimny
I own a 99 jimmy and it's a great little car, however it has been having some issues of late with cooling.

It would get hot and conk out after being laboured in the bush, and has also happened in traffic on hot days.

Radiator is in good nick. Has been flushed numerous times and filled with new coolant. I also changed the thermostat (genuine suzi) to no avail and today I replaced the fan clutch as we found the old one was not doing all that much.

After putting the new clutch in it's definitely better but it's still getting hot in the bush. It cools down quickly enough as soon as you start descending, but the main issue I think is the thermo fan which controls the AC is not kicking in to assist in cooling the engine.

If the car overheats and stops and I leave the ignition on the thermo fan will kick in and run until the engine is cool. However it will not do this when the car is running and the temp is climbing.

I have taken the sensor out and put a lighter to the bottom of it and as soon as it gets hot enough the fan kicks in.

Is it possible the sensor is dodgy and is only working when the temp is too high?

Engine is strong and has 120,000kms

I'm not sure what else to replace so would be extremely grateful for any advice!
I've exhausted my little mechanical knowledge

Cheers
Nick

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