Engine Mechanical problem
1999 Ford F150 V8 Four Wheel Drive Manual 139000 miles

The check engine light is on and it dont have any power It barleys runs about 70 mph and the speed odemeter & odemeter does not work neithers does the cruse I changed the fuel filter and the code says speed sensor and lean on bank 1 and bank 2 I bought a speed sensor but it aint like the one on mine and they keep telling me it is but it dont look like the old one and the only place I found mine was on the left side and nearly on the back of the transmission, and I replaced the one on the rear end but it still wont work and I cant find another one on the transmission, but AUTO ZONE says it is .I even took out the shifter and covers in the floorboard so I could see on top of the transmission and now I am having hell putting everything back like it is supposed to be and it still runs ruff and no power and no speedometer.I am so mad at this truck I could drive it off a mountain but it dont have enough power to get me up on top I sure could use YOUR HELP PLEASE. Thanks David Burkes