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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The 2000 F53 has to have a vacuum pump. There is no vacuum provided by the engine.
You have a 12 volt vacuum pump with a vacuum canister, under the hood.
Start there to find your leak
You have a 12 volt vacuum pump with a vacuum canister, under the hood.
Start there to find your leak
