First time flush, previous to this pan was dropped twice before regular service. Flush was done at about 110k. The noise is definately in the bypass. I am looking for info on how this bypass works and how it can be tested to see if there is a blocked line that is causing the whine. Its weird that It started to do it again after the new bypass, maybe it was defective. Maybe the cooler is blocked.
Do they sell a aftermarket setup that would eliminate the bypass?
and let me describe what I am calling the whine. It sounds exactly like hydraulic pressure going through a partially closed on/off valve. It like flutters at a high frequency. Its been doing this for awhile now, roughly 20k miles. I have pulled small to lightly loaded medium trailers with no issues. No MIL light, No codes. It just cries when I take off