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Re: 2005 E-350 heat
Regular heater controls or auto?
That is.
Usually a vacuum supply problem.
But a lot of newer vent doors are controled by electrical actuator motors.
Do you have good full engine vacuum to heater controls?
If no vacumn lines from AC/heater controls to AC/heater box it is actuator controled.
Any havc or body computer codes?
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Remember proper testing gives us the answer to many problems.
MT
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