Nissan Frontier heater

Asked by magacoop Dec 07, 2020 at 08:46 PM about the 2013 Nissan Frontier SV Crew Cab

Question type: Maintenance & Repair

Heater does now put out very much heat for all settings. Fan Blows fine.

4 Answers

3,370

Most common causes are air in the lines and heater core getting ready to go kaput

3,370

Could also be that your blend door is still allowing cool air to come through

Thermostat may not be keeping the operating temperature up to the correct temp.

105

Can almost guarantee that it's air in the radiator/heater hoses. A good sign is whether the heat increases under load/acceleration. Park facing up an incline and let the truck get to operating temp at idle with the radiator cap off. Squeeze the upper radiator hoses multiple times to get bubbles moving. Top off with coolant and replace cap.

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