I have a 2008 Impreza 2.5i 5 door automatic, 105,000 miles. I have been getting some vibration when the transmission shifts. A transmission shop identified the problem as being chatter in the torque converter, and they changed the fluid and put in an additive that is supposed to help the torque converter. This helped the problem some but it¹s still there. The shop estimated the cost of replacing the torque converter at approx. $1500.
A friend suggested that the problem might be just the lock-up, and said that in some cars the lock-up can be disabled by simple unplugging a connector or cutting a wire. Indeed the problem does not exist when in the sports mode, which he said probably disables the lock-up as well as moves the shift points.
So, does anyone here know if there is an easy way to disable the lock-up in this car, other than driving in the sports mode all the time? Thanks for your help.
Larry