Was there any update on this? Did that fix tbe problem or was it more? Been havi g the exact same problems and exact same symptoms, followed the exact same process and thought process in regards to changing the waterpump a second time after just having it replaced. Including the auxhillary water pump on the oil cooler. As i assumed as it was new that it was fine so wanted to avoid changing that again, when i say i am in the exact dame situation only difference is ive changed both the coolant sensors twice now and still having the same problems