What can be done for a 1991 Ford Explorer when one front and one rear directional light stay lit and won't blink when the turn signal is put on?

Answer 1

have you taken a look at your turn signal fuse? located underneath your dash below the streering colum. the fuse kinda looks like a film canister that might be the cause of the malfunction. You don't mention if the problem lights are on the same side of the vehicle,so here's a couple of ideas. If the lights are on the same side the most probable cause is the turn signal flasher,even if one side works normally.If the lights are on opposite sides the most probable cause is a bad ground at the socket. Ford had a lot of trouble with corrosion on the wires at the sockets.Check the sockets with the bulbs that seem dim,as they are usually the culprits.