overdrive doesent work unless the speedo works. this happened on my truck and it was the speed sensor which is mounted on the tailshaft of the transmission. hope this helps.
do your daylight runns work?????????? i no weird question but it maybe the link to the answerI left work today, speedometer not working and no over drive. I have had problems before with no od but not the speedo. I fixed the plug to the tps (info from this site) and have been shifting into od just fine. This came out of nowhere. It did one other time but the speedo came right back. '92 250 cummins auto, 358,0000 miles and runnin strong. Any help appreciated!!
What???? Would you explain what you are talking about?do your daylight runns work??????????
if your daylight runs work , that means your vss is working and the signal is getting to the ecu , witch rules out some things. could mean your ecu is not working right.What???? Would you explain what you are talking about?
Thanks, thought I was loosing what little I have left of my mind...no no its my bad ,,,