We picked up a 1992 explorer and we have a idle problem. When it starts it idles rough if you put pressure on brake pedal it smooths out. Or if you unhook the vacum booster and plug the hose it idles just fine any ideas????? Also we have a back doo that will not open from inside or outside how do i get it open Thanks everyone

 

Might want to look at the hose all the way to the end. You may have a cracked hose somewhere.