HVAC control vacuum source?
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4wd Low
Joined: Feb 2005
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HVAC control vacuum source?
89 f250....the ventilation controls do nothing....where is the vacuum source for the controls under the hood...where is the "coffee can" if there is one?...good place to start...thanks to all...Mick...oh yeah....460, auto...
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
The "coffee can" is not used for the ventilation controls, it is used for powertrain control.
The ventilation controls reservoir is a black ball about 3.5 inch across, not hard to spot.
Their should be a hose leaving the ball, going through a "T", a check valve and then push on to the intake manifold at a vacuum fitting.
From the "T" there should be a hose running to the vacuum control in the cab.
The ventilation controls reservoir is a black ball about 3.5 inch across, not hard to spot.
Their should be a hose leaving the ball, going through a "T", a check valve and then push on to the intake manifold at a vacuum fitting.
From the "T" there should be a hose running to the vacuum control in the cab.
Last edited by subford; Mar 8, 2006 at 03:52 PM.
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