Congrats on buying the Bronco, and welcome to BroncoZone!!!
As for the gas gauge, the sending unit inside the 32-gallon gas tank often goes bad and the gauge won't work. On your 90 model with EFI, the sending unit and fuel pump are in one assembly. At $120 and the labor of dropping the tank, most folks just live with it. You can figure 10 mpg and watch your odometer for when to fill up. The steering is the same as the F-150's, so check the usual items like tie rods, drag link, steering shaft and gearbox for wear. It sounds like you have the electric shift 4wd, and there is a good tech article on troubleshooting the system in the How-To section here. If you disconnect the battery for a few minutes, it will clear the code(s) that cause the check engine light to appear. It's still a good idea to have it checked first t osee what the problem is, as it may be something that affects the gas mileage like the IAC or TPS. The towing package consists of heavier rear leaf springs, tranny cooler, and possibly factory limited slip. No problem pulling the boat and trailer, just drive smart. The short wheelbase on the Bronco can be harder to control than a longbed pick-up. Good luck with the "new" Bronco, they're loads of fun!!! <
