X5 4.6 5hp24 transmission jerks, when car comes to complete stop. Possible solution.

[nafania]

Totally agrees with SlickGT1. You do have a lot of knowledge about those automatic transmissions. Here, in my country, i told to all my friends and my mechanic that i am talking to a guy from UK. We are all follow your thoughts.

Just look at me and see what we have to go through when someone unknowledgeable fixes your car - its been almost a month and i spent so far 2000$ and still my car is not fixed. My valve body is getting rebuilt and i think they will charge around 500$. Hopefully it will be the end and soon i will enjoy my car since it is almost summer time.

Once again Thank You Phil for all your replies.

[Sergei-e]

Hello everyone,
In my X5, 2001, 4.4l I have experienced a similar "jerking" at the car's nearly complete stop issue for a few days. It was as if something "kicks in" inside he transmission at nearly complete stop following with a spike of the fuel consumption gauge from nearly zero to up to 12-14 l/km and then back to zero.
Today the transmission finally gave up when I was driving uphill at approx. 60-70 km/h (without paying any attention I could not tell for sure whether it was down-shifting at that moment or not). A loud snapping shot was followed by high pitch grinding noise and high increase in the engine RPM. The vehicle came to a complete stop and any attempts to put the lever in reverse or drive position were accommodated by the the same loud high pitch grinding noise without any movement of the vehicle. Even in Park position the transmission has lost its function and the vehicle would start rolling back downhill as soon as I was releasing the brake pedal . I had to tow the vehicle back home on the top of a flat bed track (thanks to CAA for a 160km trip) and planning on pulling out the transmission for repair.
PRPhil,
You are highly knowledgeable expert in transmissions and helped a lot of people with your valuable advices. Do you think this type of the problem may have its root cause in malfunctioning of the control unit (some valve had failed causing engagement of two gears at the same time) and I should consider rebuilding the valve block, too?
I very appreciate you help and your opinion of an expert.
Thank you.

[JCL]

THe park pawl that holds the vehicle from rolling is separate from the drive gears. So if it doesn't drive or hold park, I would look at the transfer case and driveline and not just the transmission.