Four problems related to transmission slip out of gear have been reported for the 1997 Ford F-150. The most recently reported issues are listed below.
While in park with key out of ignition, transmission jumped out of gear/lost control and rolled approximately 10 feet. Caused extensive damage.
Backed out of driveway, stopped vehicle, put in park; got out of vehicle, started moving backwards, got into vehicle & put it in park again, got out & vehicle started backwards again; vehicle jumped out of gear; manufacturer/dealer could/would not help w/problem.
Put gear into reverse the vehicle jumped out of gear, went forward, hit a fence, no one was injured. .
Vehicle was in park, and jumped out of gear. Vehicle went over an enbankment and into some trees. Vehicle had to be towed.