Question about 2002 Nissan Altima
It sounds like the same problem i had. Unfortunetly its the heater core and they can be expencive to replace but if you can do it yourself you will save alot of money.
Posted on Dec 12, 2008
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This is a classic symptom of low coolant level or air in the system. Too, clogged heater core.
Buy a 5 min flush from your local dealer. With a gallon of Anti freeze and water pump lube. Flush the system per instructions on the back of the 5 min flush bottle. And add the one gallon of anti-freeze to system. The top off with water. Make sure engine is running with the heat selector on and fan on high.
See if the will work if not Change thermostat.
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Regards, Lee Davidian
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