Gas gauge stuck, Speedometer doesn't work?

I have a 1991 Honda Prelude Si just fixed quite a few issues and down to two problems. My gas gauge is stuck on full and my speedometer is dead. I know the gas gauge is getting power because my temperature and gas are on the same gauge and my temperature works. I also tested my sending unit and it was reading right so yeah maybe the needle is stuck but i doubt its that simple with my luck. As for the speedometer my only guess is the vss needs to be replaced. Everything else works by the way instrument panel lights up, tach, od, temp, all work. Any one that could put there thoughts in would be greatly appreciated!

There's a thing called a "speed sensor" that you need to check out. That's probably your speedometer problem.
Your sending unit from the gas tank might be stuck. That might be your gas gauge problem. It could also be wiring, so you have to check that out.

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