2001 Kia Sephia Speedometer
Having some of the same trouble as others I've read about on this board.
Check engine light on. O/D light flashing.
At first the speedometer was not affected.
Changed the speed sensor. Cleared the error. Everything was back to normal.
About three days after that the speedometer dies, and my son said the car did not want to shift.
I double checked my work and found one of the sensor wires almost cut in half. (Did I do that on the first sensor change? Maybe...) Resoldered the wire, cleared the error. Everything was fine again.
This lasted, again , about three days. Now, it's back to light and no speedometer. A new development. When I decelerate, the speedometer jumps around wildly. I was thinking I had another short at the plug, but everything looks good all the way to the main bundle.
I cleared the error again and drove it a short distance. No lights, but no speedometer.
I've taken the speed sensor back out. I'm going to return it to Autozone for a swap out. (I've have several things from AZ lately, defect off the shelf.)
Anything else I should be looking for? (Sorry, I don't know how the read the check engine light code. Maybe someone can enlighten me.)