My 2008 Frontier won't heat/defrost cab when idling.

Asked by Sep 26, 2014 at 11:18 PM about the 2008 Nissan Frontier SE Crew Cab 4X4

Question type: Maintenance & Repair

When idling cab won't heat/defrost won't work.  Engine temp. rises as expected.  Cab/defrost begins working when you start driving.

3 Answers

17,340

Could be a bad thermostat, dirty cabin filter, bad/plugged heater core or the electric cooling fan by the radiator isn't working.

1 out of 1 people think this is helpful.
10,350

sometimes the little doors that direct heat around are run by engine vacuum. check for vac leaks.

17,340

On something that new I'm gonna guess and say the blend door(s)are electronically controlled by small motors.

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