Having problems with your 2006 Ford F 350 Super Duty ?
I found a grey broken vacumn line on my ford 6.0 liter deisel . It goes to a actuating door just above cylinder 5. What does it do?
The gray vacuum hose is for your heater control valve. It shuts it off when on max a/c . Repair the hose and put it back on. It can also cause your a/c to blow out the defrost.
Repair Help & Product Troubleshooting for 2006 Ford F 350 Super Duty
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