Another A/C vent question
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Trailering
Joined: May 2023
Posts: 21
Likes: 9
From: Center of Oklahoma
Another A/C vent question
A/C works perfect when 7.3 is under load. But when coasting the cool air turn hot! And it keeps blowing hot air until the next hill pull and immediately goes back to cold air. Should I start replacing every vacuum line? F350 DRW
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Joined: Apr 2016
Posts: 7,177
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From: Bahstun
open hood and near passenger side is the vac hose to a vent valve in the corner that gets rotted out
right after truck is turned off, change selector to see if each valve works and listen for leaks (hissing)
you can put on a 3/4 ball valve wiht barbs and hose clamps with one cut on heater line to block off the flow for cooler AC too
right after truck is turned off, change selector to see if each valve works and listen for leaks (hissing)
you can put on a 3/4 ball valve wiht barbs and hose clamps with one cut on heater line to block off the flow for cooler AC too
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