Dash AC blows out of the defrost vents
the dash AC blows out of the defrost vents when engine is under a strain, such as climbing up a hill, etc. my motor home is a 2000 itasca suncruiser. the engine is a ford v10 i feel it is a vacuum...
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It’s a common problem as there is very little vacuum at WOT like when going uphill.
Many have installed a small vacuum pump that runs when vacuum gets low.
Many have installed a small vacuum pump that runs when vacuum gets low.
