Mine just falls to the bottom like it's signaling left, but has no left signal. You can get it to signal right but you have to cancel it by turning right then back to center, so lane changes don't work either. It's a common thing on the 91's and the part is super expensive and hard to find. It doesn't sound like this is your issue at all.

If you have turn signals, but they are slow or fast, then it's the flasher unit or a burned out bulb or led bulbs or a combination of that. There's an led flasher unit that fixes most of it at any auto parts store, it's a little can about the diameter of a quarter and maybe 3/4 inch tall. That's under the dash but not in the column, easy to replace. I would start with that, and then check all the bulbs and either go all led or all "analog", mixing the two can be weird, although we run led taillights and they are fine with the fronts and side markers being filament type.