I need some help. I can't seem to find an answer to my particular problem.
Recently, I was riding my bike on a sidewalk since it was getting dark, and I went through a patch of weeds. It seemed fairly safe to do since I could see through them. I was trying to avoid braking and turning. There was a piece of rebar sticking out of the ground about 12-16 inches. I hit it straight on, flipped over, I may have fractured ribs or bruised them very badly. Anyhow that's how my issue started.
I have a fat tire mountain bike 26 inch tires. At the time of the wreck my handlebars turned so I loosened them to straighten them from the stem. After a few weeks of not riding, I rode my bike again and noticed when I hit the brakes my tire turned. I came home, loosened the stem and tightened the top cap, and then tightened the stem. I tested it and had the same problem. I removed the Fork and reassembled. Everything was tight. Then I noticed that the steering tube was actually spinning inside the fork when I held the front wheel straight and turned the handlebars.
Is it broken and I need a new fork? I tried reassembling multiple times, the bearings are good. I'm at a loss for ideas aside from taking it to the shop. Any help would be appreciated. Thank you