I have a 1999 Eddie Bauer Expedition 4X4, 5.4 liter with the AWD, 4H, and 4L switch
My truck is stuck in 4hi and I've been searching how to get it back to awd. It seems to be an electrical issue to me. If you've had this problem or have suggestions on what to check or do, Please my wife wants her truck and I really can't afford the dealer.
Before I ever messed with the truck, it was in awd. I got stuck so I shifted (per manual directions) then 4x4 lit up so I pulled out of the mud and got on firm ground. When I tried to go back to awd the 4x4 started blinking and stayed this way, all 30 miles back home. The speedo was reading 90 mph when I was only doing about 30.
I have read Threads and have received suggestions. This is what I have tried so far.
Trying switch in neutral, with and without brake pedal depressed, also running and not running. I've tried removing 104 fuse out, then back in, I've tried disconnecting the battery, and reconnecting 15 min. later. I removed the transfer switch motor which has three plugs and a single brown wire, cleaned the little sensors inside the transfer case that are connected to switch motor and reinstalled, I have raised the front off the ground repeated all the above except the switch motor thing. I have checked all fuses inside the cab, (no power at #20) which by owners manual say it goes to audio (not radio) air suspension system (which is not on my truck) and GEM.
I 'm no electrician, not even close but to me it seems to be an electrical problem because since I have done all this the little switch near center panel doesn’t light up to tell me what selection I chose (awd) (4x4) (4low) or even when I turn on the running lights. The dash 4x4 doesn’t blink anymore or even light when I start the truck but Low range still does.
Switch seems to have no current (removed plug on switch & looked for current with 12v tester, nothing,) I picked up a switch from a jyard but no results maybe no good either. Does the transfer switch motor supply the current to the switch on panel? I picked up one of those also, but might not be any good.
Is there anyway to check switch motor or awd 4x4 4l switch? or any suggestions ? I've been told to check ABS sensors but don’t know their location. I been told to check vacuum system, And I will, but I think it's electric. I'm Lost!
Sorry for the long thread