My 2002 ford explorer power door locks started acting up lately. The door ajar light stays on even though all the doors are close. But I notice that the problem is mostly with the liftgate. If I open it and slam it shut, that usually will allow me to lock the explorer.

Any help is appreciated.

Read this article and try this first: Ford Door Switch Problem (http://free-auto-repair-advice.blogspot.com/2008/04/remember-pinplunger-switches-that-car.html)