F-250 no heat or A/C in cab
Heater and A/C controls all work, but the temperature of the air blowing through the ductwork is always ambient temperature. A/C lines under the hood get cold (condensation forms) when I turn on A/C controls, so I believe A/C is working. Why can't I get warm or cold air delivered into the cab?
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dunno what year truck you have but vacuum motors control the flow,I believe.A friend also had the temp control on his Ranger go bad,so meb'be that's it.
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I have a 1998 F-250. The vacuum motor works on the Blend door. I can't tell where all the other vacuum lines go without taking the whole dash apart.
The temperature control knob resistance varies from 300 ohms to around 5000 ohms. |
Problems fixed. Turns out I had the Blend door confused with one of the damper doors. The Blend door was broken.
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