hair is an update on my problem. I think I have it more isolated now and hopefully this will help others help me. the other day the idle was about 3000 rpm and at that time I couldn’t get the idle to go down to normal but with the idle t hat high every time I would put the gear in neutral and click on 4 hi it would engage I risked and did burn rubb er putting it into drive but the 4 wheel drive did work and I also did this with the 4 lo with the same results. but now I have the idle at normal and when you try to push on the buttons to engage the 4 wheel drive and it will do the same thing as I described earlier. so what I decided to do was put the car in n eutral and bring the car to idle at about 2200 rpm and sure enough the 4 wheel drive would engage at high rpm. does anyone know what would cause of this to happen? also there is a piece on the car that’s called an electric brake control front drive axle vacuum switch what puzzles me is there are 2 vacuum lines that go into a T connector and that vacuum switch I just mentioned connects into a 3/8″ hose coming out of that T connector and there is also a 3/8″ hose that goes out of that switch and is connected to nothing just hang in there but it sure looks to me that it should go on to something. please help
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