by CJ » Thu Mar 29, 2012 6:39 pm
Angie, welcome to the forums. The problem is likely to be one of two things - either a sensor(s) in the gearbox needs replacing or the torque converter in the box has had its day. If its sensors, a diagnostic check as per Bernard will show it up. Check the colour of the transmission fluid, if its very dark (i.e. black) then its a sign of toque converter failure. Healthy fluid is red, old / boiled fluid is brown. This check isn't definitive but may help in the diagnosis. A bust torque convertor almost always ends up in the owner replacing the gearbox, the work required to replace the TC simply isn't worth it.