Question about Ford F-250

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1999 F250 Super Duty with a V10 only blows warm air. 30k miles on engine. Coolant level fine, no leaks. Air Blend Actuator moves. Temp in to heater core is 115F, out is 105F

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That's not hot enough at the heater core. Engine coolant temp is controlled by your thermostat. It is probably weak or stuck. Replace it. don-ohio (:^)

Posted on Dec 30, 2016

Testimonial: "Thank You, that's what I was thinking"

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  • don-ohio Dec 30, 2016

    Let us know if that fixes it. It could be something else,but if your temp gauge doesn't raise much,that's probably it. don

  • Chuck R
    Chuck R Jan 03, 2017

    Don,I put in the new thermostat, and it seems hotter, but really won't be able to tell until it gets colder, hopefully this weekend. I'll let you know how it goes...Thanks!

  • don-ohio Jan 03, 2017

    Well,you're welcome Chuck! But you can warm up the car and check the heater even in hot weather,can't you? don-ohio (:^)

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