Well a few days the Transmission was shifting very strangely. I was halfway through a 4 hour trip and I just continued on. So the car sits all week and today I drove back home. Well I noticed when it started shifting a bit funny the speedo was much lower than the speed I was going. It would move up and down smoothly however very slowly. Anyone have any ideas on this? I will search come more but figured Id ask as well


Thanks!

 

I don't know the underlying cause but if the computers are seeing a lower speed than actual then shifting can be weird - they trust the speed (well, the revs)!

Failing CKP maybe (see below)

 

Info here not an x350 but likely ABS sensor, wireing or ABS module IMO.

https://www.jaguarforums.com/forum/x...problem-50593/

 

I don't seem to have any ABS issues. Problem hasn't come back yet. Im going to try to check any abs codes. No stored codes I could find.


Thanks guys