Turn signals do not work nor does emergency blinkers. They sometimes work for a short while then stop working. Vehicle is a 1996 crown victoria.

You probably have a short somewhere or you have a bad relay.

Check in your fuse box and see if there is a relay (a big button looking plug with all your small fuses) that is labeled to control the turn signals. More than likely there is a relay for your emergency lights. Go to your local parts store, get the replacements for your vehicle, pull out the old ones and put in the new ones.

If this doesn't solve the problem, then you've probably got a short somewhere and you will need to go to a shop that specializes in auto electrical to get it diagnosed.