When I got the car the speedometer was bouncing up and down. I took it to O'Reilly auto parts and ordered the speedometer sending unit. Once I unplugged it and replaced the sensor the o/d off light started flashing and once I run the codes codes the codes come up about gear ratios being incorrect. When II shut off the codes and tried to to a reset by unplugging the battery, the check engine light and o/d off light stays off. But once I shut off the car again and restart it the check engine light and o/d off light comes back on with the same codes. This never happened till I unplugged the speed sending unit and plugged it back in. The transmission has been fully serviced and the transmission does not slip.
Oct 31, 2015 at 6:13 PM
