Blinkers that blink twice as fast usually mean that one of them is bad (either a bulb or connection). To find out which side is bad, first turn on the left side blinkers, then the right. The side that blinks twice as fast is the bad side. Once you figure out what side is bad, turn that side on and get out of the car to check if the front and back bulbs are working.

96 Contour SE Duratec V6 24-valve 2.5L ATX 108,000 mi. Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil