my 2008 titan will not blow hot air when heat is on, could you give me some ideas please

Asked by Oct 11, 2015 at 11:16 AM about the 2008 Nissan Titan

Question type: Maintenance & Repair

antifreeze leval is fine and also test fine. the hoses to header core are cool.

2 Answers

69,685

2 things, one being the thermostat that controls engine temperature, what does the temp. gage read? Next being a plugged heater core, some times you can flush them out. And make sure there is no air in the cooling system.

335

Beside the thermostat or heater core, it could be an inoperable heater control valve (the valve on the heater hose near the firewall). It is integrated into one of the heater hoses and has a wire connected to it.

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