vermilionfox Posted June 7, 2016 Share Posted June 7, 2016 I have a 1998 Ford E350 that has a vacuum leak that causes the A/C to go from the vents to the floor when under a heavy load ( when towing boat/trailer and going uphill for example). I have isolated the leak to either the A/C vacuum reservoir or the check valve for it. Both are a major pain to get to as it requires removing the dashboard and the evaporator core housing assembly. Could I bypass both those by rerouting the hoses and setting up a new reservoir and check valve in a more accessible location? Any ideas? Quote Link to comment Share on other sites More sharing options...
Jeremy airjer W Posted June 8, 2016 Share Posted June 8, 2016 You can try this. A lot faster than pulling the evap housing.... Quote Link to comment Share on other sites More sharing options...
vermilionfox Posted June 17, 2016 Author Share Posted June 17, 2016 Jeremy thanks for the info! I decided to run with a new tank on the inside. Finished it up in about 2 hours.I put it up on top of the housing that holds the heater core (I think). Rerouted the vacuum line in through the firewall and sealed the hole with hi-temp sealer. Put in a check valve then the tank and from the tank up to the controls in the dash. Took it out for a test drive towing the boat afterward. Works perfectly! Ran up some big hills at about 55 and gave it some gas and no drop out of the A/C! Jeremy airjer W 1 Quote Link to comment Share on other sites More sharing options...
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