2005 Tribute runs super rich no power. OD light flashes & check engine light

Injectors 3 and 6 are not working so the computer is trying to compensate by adding more fuel thus a rich condition. Hard to say if it is wiring, the injectors themselves or an internal computer problem. Other is transmission related and will take a transmission shop to diagnosis and repair but still sounds electronic.

There's a lot going on in your twenty year old SUV. Maybe this is the death knell for it. In great shape, the car's worth three grand. Repairing the engine and transmission will eat heavily into that, and then even a new set of tires will put you over that amount. Do basic repairs and trade it in or sell it.