I have a 2002 WRX Automatic with under 50K miles on it and the drivetrain is still under warranty.
A few months ago whenever I would hit the gas hard when moving at highway speeds, there is a second delay in the response and when it does downshift, it feels like the engine is going to leap out of the car. No grinding, just a very hard pound/lurch. It appears that this may get worse when the car is heated up or is carrying a load. Even one person in the passenger seat seams to increase the problem. This problem also occurs when the car downshifts on it's own while climbing. This hard downshift only occurs at highway speeds.
I took it to the dealer, upon initial inspection they noted a possible transmission replacement but needed to diagnose further. After doing line tests, they came back to me stating that everything was within Subaru's recommended limits. I told them that this issue is new and is getting worse and they continued to do some digging.
They have now ordered a replacement "tower resistor" that supposedly could be causing the slight delay leading to an increase in pressure that when released causes the hard downshift.
Anyone know of this resistor, think that it could be a legit fix or are they trying to find a way out of replacing a transmission under warranty? Any further advice would be appreciated!