Where do the vacuum hoses go from the control panel to find a leak in a 1999 Dodge pickup air conditioning system.
First ... Make sure that you have vacuum to your control head. This is normally the black vacuum line. The vacuum than goes to the various vacuum motors on the Heater /AC case. These vacuum motors rarely fail. The normal fault is loss of engine vacuum ..cut line or not secure to engine. second.. a fault with the vacuum reserve reseviour. When the engine needs the vacuum this is your vacuum supply.
1999 dodge 5.9 cummins diesel where do the vacuum lines run from heater control head
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u need the factory diagram, to get that go here.http://www.faxonautoliterature.com/produ...
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