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Still sounds like a vacuum issue, and seems like you've pinpointed it, I just don't know squat about the HVAC systems on these... Sounds like it might just be a small leak on yours, since it works on some settings but other settings where it may require more vacuum for the HVAC controls, it's not enough to lock the hubs!? just thinking out loud here...
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Originally Posted by Mdub707
(Post 713867)
Still sounds like a vacuum issue, and seems like you've pinpointed it, I just don't know squat about the HVAC systems on these... Sounds like it might just be a small leak on yours, since it works on some settings but other settings where it may require more vacuum for the HVAC controls, it's not enough to lock the hubs!? just thinking out loud here...
this guy had the same problem Four wheel drive and A/C issues - Ford Truck Enthusiasts Forums ---AutoMerged DoublePost--- now i have to find the hose that conects to the heater control valve. one side goes inside the truck and the other side goes to __?___ |
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