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Toyots vios 1NZ engine coolant temperature


ThushanthaSrimal

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Guys,

Anyone have an idea about the normal coolant temperature of vios 1NZ engine.

When driving some times my overheat bulb blinks but the coolant level is normal and it is not boiling when I stop and open the engine bay. This happens often not regularly.

I have connected a Bluetooth OBD reader and the normal coolant temperature shown there is around 96C. Seems like the threshold for overheat bulb is 105C.

When I check the temperature in the cold start the OBD shows nearly correct environment temperature. 

Can this be a temperature sensor failure? If the engine is overheated should the coolant be in boiling mode?

Appreciate your help. Thanks 

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