Wagoneer L6-258 4.2L VIN C 2-bbl (1982)
5. If shift motor does not maintain vacuum for at least 30 seconds, replace motor.
6. Remove cap from shift motor transfer case connecting port and check for vacuum at port.
7. If vacuum is not present, rotate right front wheel as necessary to ensure that axle has disengaged completely.
8. Check vacuum at shift motor transfer case connecting port again. If vacuum is now present, refer to the charts.
