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I typically keep the front hubs locked on this truck. I have recently noticed that when shifting into 4x4 that the a/c or heat will switch from blowing out of the vents to blowing out of the defrosters. Any clues how to fix this?
I typically keep the front hubs locked on this truck. I have recently noticed that when shifting into 4x4 that the a/c or heat will switch from blowing out of the vents to blowing out of the defrosters. Any clues how to fix this?
You have a vacuum leak somewhere between the vacuum solenoid mounted on the passenger side fender and the locking hubs. It's more than likely one of the thin plastic hoses or one of the rubber hoses that connect to the steering knuckles. It could also be the knuckle seal or the o-ring around 1 of the locking hubs, but more than likely a leaking hose. Let us know what you find.