First of all, thanks for all the replies. It is the valve body as seen here (
) the dealer is talking about. I spoke with them and they knew about the clutches and the duty C. But they were pretty sure it is the valve body as they measured the fluid pressure. They also mentioned they used to blindly replace the solenoid and the clutches only to find out the valve body was the problem. They claim to have seen quite a few of these issues.
My question is about measuring the fluid pressure. I should have asked where and how they did that, but I had to get back to work. Is that something the dealer came up with or it is actually a diagnosis procedure ?
I put in the FWD fuse and the problem is gone. I closely inspected the tires (GoodYear TripleThread) and they look fine and evenly worn, plenty of thread left. I also checked the pressure in the tires and it was fine.
I am the original owner of the car. It is actually an '05 model. The tires are 3 years old (purchased brand new). The car has 85k miles on it. Other than oil, filter, air filter, brake pads and tire rotations there was no other maintenance done (until the transmission fluid change). The transmission fluid was changed at the dealer.
So I am not sure what to do next. I am more inclined to go the "classic" route and to inspect the duty C and the clutches. I am not mechanically inclined so I will have to find another shop for a second opinion. For now I will drive it in FWD.
I did not get to read all the information on troubleshooting the torque bind. But is there a sure way to confirm the duty C or clutches are the problem rather than the valve body ?