I have a 1992 Dodge diesel d250 automatic that is giving me a real hard time. The speedometer, overdrive, and cruise control are not working. I assume it is a problem with the speedometer, but I don't know what. I am out of things to try, I replaced the speed sensor and the abs sensor. Both have continuity and the gears on the VSS are in good shape.. I also fully examined the TPS and it seems to be in good order. All the fuses are good and all the other gauges work fine.
<br/> Any suggestions on what to try next would be helpful.
<br/> I need to drive this truck across country by the end of the week so I am at the point where if i could just get the overdrive to work I'd be happy. Does anyone know a way I could just put in a new overdrive switch to manually switch the vehicle over?