I have problems with my cluster in my 97 F-150, I got one from a used parts yard out of an Expedition and speedo reads 18 mph at stand still and the tach reads like 1400-1500 rpm's at idle all the other guages work and read fine. Any suggestions?

 

What was wrong with the original cluster? Why did you change it? If you got that one from a wrecked Expy, then it probably got damaged in the wreck.