Question about 2002 Nissan Altima
THERMOSTAT GOOD COOLANT LEVEL GOOD..HOSES INTO HEATER CORE COLD
If the engine is not over heating than most lilely it isn't the thermostat or waterpump that is causing the problem. Check the heater hose coming out of the manifold and see if it is warm to hot. Next check the return line from the heater if it is still cold or moch cooler than the inlet, the most possible problem is the heater water control valve if this model has one or possible the core of the heater is plugg with slime cause by some antifreezes setting during the summer months while not being used. If this is the case than remove tihe two hoses and back flush the heater core with water pressure until it runs clear. I have had this problem before and this cured my problem. I also had to flush the engine and radatior also. Hope this help. .
Posted on Mar 14, 2009
Water pump is bad.....or thermostat is not opening....
Posted on Jan 14, 2009
When you let coolant out of system the level dropped below heads . this caused an air bubble in heads and or motor. when you go down the road the extra pressure of the water pump takes up the slack but at idle you are dealing with an air bubble that does not transfer heat
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
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