Trouble codes 42 and 43
 

Morning gentlemen, I'm looking for a bit more help with a couple trouble codes that won't go away. I have a 93 4runner 3.0 2wd and the codes 42VSS circuit and 43 Starter signal circuit are popping up. Does this mean I have a bad speed sensor or a circuit problem? Same with code 43? I removed and checked on the speed sensor, and it looks ok, a bit oily. The speedometor on the runner is off and is running rich? Also bogs down when giving it gas? Anyone experience these code troubles, and are they an easy fix? Any help would be greatly appreciated. Thank you...