In the past I was under that assumption as well.

It appears as this is not the case.

I looked at a flow diagr of our trans/TC and it showed the fluid path in locked vs unlocked. I don't think it changes line pressure at all.



Quote Originally Posted by kday View Post
I thought the issue with the failure to lock was that it was due to an internal fluid leak which resulted in lower line pressure and therefor higher wear on the clutches.

My car has had the 17125 code for about 3 years. Only in the last 6 months has there been any symptom other than the lack of lockup. Lately it's been a bit balky at tip in sometimes, and I'm getting the sense that the problem has spread to the gearbox proper. I've had a 6 speed kit waiting to go in for 2 years but I've been waiting for it to get bad. Soon, I guess...