02 Ford Supercrew. I have an intermittent problem with my turn signals. When I push the blinker up or down nothing happens most of the time. But occasionally it will work. I was wondering if i could have a short or not sure what it could be?

It could be a few things....

Turn signal switch is failing, hazard/flasher is failing, or yes, a wiring problem.

Start with the easiest first....replace the flasher and the fuse....even if it looks good. Sometimes reseating the fuse will fix this.

Next would be to pull the steering wheel and check that turn signal cam/housing for corrosion or something with the wires.

Last would be to replace the turn signal assembly.

You can try tilting the steering wheel all the way to the up position, and see if it resolves the problem.,

If so, you have a somewhat common problem of the connector at the base of the steering wheel being pulled apart.

If the tilt fixes the problem, remove the knee panel, and pull up some slack on the truck side of the harness. Pull the connector apart, and check for discolored pins in the connector.
If this is not an issue, put the connector back together, and make sure the connector tab is still functional, else you might need to zip tie the connector together.
On the truck's side of that harness, zip tie it to the support frame for the knee panel, so it cannot pull the connector apart again.

Just something to test, with the advice you have already gotten,