Overdrive light flashing: trans issue?
I replaced my spark plugs today and "reset the ECU" which I assumed was just unhook the battery for 5-10 minutes. Started up and ran great and about 10 minutes into driving the O/D off light started flashing. I pulled over and turned the truck on and off and the light didn't return, overdrive worked. I read a bit and it seems it's transmission related? My truck does shift pretty hard from 2 to 3. Is this some kinda sensor/electrical problem or should I start thinking about trans work in my future??? THANKS!!
2003 Ranger XLT, 4WD, Transmission 5-Automatic, 4.0L, 145,000 miles