One problem related to blown head gasket has been reported for the 2000 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Ford Explorer based on all problems reported for the 2000 Explorer.
At 166,000 head gasket blew plus there were other engine problems. Replaced with another engine. Now transmission is going out. It will go into reverse fine but will go into drive with problems. If vehicle is cold it will go into drive faster than when it is warmed up. At warm temp it may take several tries of shifting from park back to drive or waiting several minutes for it to drop into drive after shifting out of park. Have only owned this vehicle less than 2 years.