Heater

Asked by David Dec 01, 2019 at 08:19 PM about the 2005 Ford F-250 Super Duty Lariat Crew Cab 4WD

Question type: Maintenance & Repair

2005 super duty, heater is set at 90 degrees, blows air but is not hot

2 Answers
40,160

TDolby answered 4 years ago

I would suspect the thermostat failed stuck open. Is your coolant topped off and nothing leaking?

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F_O_R answered 4 years ago

Possible air in the cooling system. Is the engine temperature gauge at the normal level? You may also want to flush the cooling system in case the heater core is plugged up.

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