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Old 03-11-2019, 01:38 PM   #1
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Vacuum reservoir for dash ventilation

May dash ventilation will not change modes (floor, upper, combo...). Was told it was a faulty vacuum reservoir. My question is where is this located (engine compartment or under dash? Vesicle is a 2015 class A (precept) on Ford Chassis
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Old 03-12-2019, 05:51 AM   #2
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Not sure of a vacuum reservoir location. But someone had a similar problem as the vacuum line going to the back of that knob had come off or was never connected. Attached hose and it was ok.
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Old 03-12-2019, 10:41 AM   #3
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Or a damaged vacuum line, pays to check before assuming...
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Old 03-12-2019, 04:32 PM   #4
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How did they find the leak? The only sure way is to force artificial smoke through the line until they find the leak.

It could be the reservoir. You could go to car parts places with your engine, transmission and chassis information and either find a diagram or at least a picture of the reservoir and then look for it.
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