This usually means one of the bulbs has burnt out.
turn signal relay is bad
I would say that there is a miswiring of the blinkers.
That's probably because that's the older van and the more original blinkers
To blink means to open and close your eyes rapidly.
Blinkers or Rabbits :P
Possibly a defective Flasher Relay. Replace the relay.
you need to replace the bliker can in the fuse box.
i would say maybe a bulb or a flasher
u need to replace the flasher unit in the vehicle
The most likely cause is the turn signal flasher.
Could be a bad flasher or just a burned out bulb.
Check for a bad ground