Question about 2006 Nissan Murano
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Posted on Jan 02, 2017
I would check the radiator and make sure that it isn't partially blocked. If you can use a laser thermometer it is easy. Go across the FINS slowly and see if there is a difference. If there is, then I would suggest you flush the radiator.
Since you say it is primarily when you are going up hills, I would also check to make sure that the transmission cooler is not blocked in some way and making the transmission overheat.
Posted on Sep 07, 2011
SOURCE: nissan altima coolant boiling
could be a number of things dose the heater get hot if not thormostat would be my first port of call if that dose not sort it it could be watter pump or head gasket failure presure testing coolant system would help to indicate what the fault is
Posted on Feb 18, 2013
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What you describe is quite normal. While the engine is running and the coolant is circulating the thermostat maintains the engine within its operating temperature range. When the engine is switched off there is still considerable heat within the engine and the coolant will continue to absorb this heat. With no coolant circulation, the coolant inside the engine will register a temperature rise to the extent your gauge measures. This temperature rise may persist for up to 15 minutes until the natural thermo-syphon of the cooling system starts to dissipate this heat build up and the engine starts to cool down. Because the cooling system is pressurised, the coolant is prevented from boiling off at this temperature above boiling point. Once the engine is restarted the coolant flow is re-established taking this excess heat from the engine and the system temperature returns to normal.
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