a new shift motor was installed year and half ago, having problem with
front end locking in. Some time the 4 hi auto lite will come on,some
time not.  Stop and drive forward lite will come on.  Last week had
good snow storm and got out in this and all went fine, backed up, moved
forward and front end disengaged and was stuck, even tho 4x4 auto was
lite up.  Got it out and turned  switch to 4x4 auto and had no problem
till backed up and starter forward, front end disengaged.  At times the
4x4 & the 4x4 lo lite will both flash 4 or 5 times with selector in the
2 hi selection.
   Have read numerous articles on 91 thru 94 explorer owners with the
bw 1354 case having  no action when selecting a possition.  They are
cleaning the shift motor syncronizing it with the actuator shaft
coming out of transfer case and off they go 4 wheeling.
   Does this syncronizing also apply to the 4405 case shift motor?
   Repair shop says problem is inside the case.
   The front axel has the vaccum and electric module that slides a
collar onto the rite side axel to hook up  the front drive, shop want
to put in a used 4405 case
  Anyone ever had this kind of problem?