I have a 1993 ford ranger. It is a V6 and has a C4 transmission, 33's, 9'' rear end, and new ring and pinion in the rear. My speedo is terribly off. My speedo reads my speed by a physical cable, and not electronically.
My question is, how do I fix my speedo from being 30+ MPH off? Where is the speed measured from? The tires? Transmission?