Hi folks, I'm new to this forum, having recently purchased a 2008 XC90 V8 Sport. So far, so good, but in the process of updating the fluids in the car, I noticed that I started to have issues with shifting, primarily flaring, RPM acceleration, then banging hard into gear. This only happens once the transmission is warmed up, and usually 2-3 or 3-4. I have extensive records of the vehicle, but saw no sign the transmission fluid had ever been replaced. I took it to a local independent Volvo specialist here, and he did a drain and fill, then reset the counter. He told me that the following codes were present : TCM-P089600 and P077400. He cleared these codes, and did note that the fluid was pretty dark, so it does seem this was the first change, at around 137,000 miles.
I drove it for a while today, and it behaved fine, with none of these symptoms, however after about 45 mins of driving, the flaring and banging came back.
I have done a lot of research on this forum about the valve body issue, which seems to be confined to TF80SC transmissions from 06J and earlier. Mine is a 07C, so in theory should have the updated valve body. However, the symptoms look similar to those encountered by owners with the earlier transmissions. Could it be that the old fluid caused significant wear to the valve body, causing it to degrade?
I am going to give it a bit more time, but my operating theory is that I should probably prepare to bite the bullet and get a new valve body. Thoughts?
Many thanks,
Andy
2008 XC90 V8 Sport
Electric Silver
I drove it for a while today, and it behaved fine, with none of these symptoms, however after about 45 mins of driving, the flaring and banging came back.
I have done a lot of research on this forum about the valve body issue, which seems to be confined to TF80SC transmissions from 06J and earlier. Mine is a 07C, so in theory should have the updated valve body. However, the symptoms look similar to those encountered by owners with the earlier transmissions. Could it be that the old fluid caused significant wear to the valve body, causing it to degrade?
I am going to give it a bit more time, but my operating theory is that I should probably prepare to bite the bullet and get a new valve body. Thoughts?
Many thanks,
Andy
2008 XC90 V8 Sport
Electric Silver