My 2005 2.2 Direct Auto Estate was working absolutely fine a couple of day ago until all of a sudden, the gearbox seemed to lose power and get rather sticky in 2nd and 3rd gears. After reading though all the relevant threads, I decided to change the oil (the car has done 65k since new so assumed the oil in the gearbox to be the original factory fill so no bad thing to change in any case). All went well with the change and the gearbox seems to be fine - except it's now doing something different:
2650/2700 rpm @ 80 mph
1750 rpm @ 50 mph
Both under steady driving on a level surface (dual-carriageway). Is this normal?
The gearbox is silk-smooth when cold but now seems to remain in 3rd or 4th unecessarily when under acceleration - and revs up to 4000 rpm. It only changes if I ease off but even then, it sometimes doesn't do it. I can control it manually of course but as I never used that mode at all prior to the oil change so can't tell if what is happening is normal or not.
Otherwise, the car now seems guttless (more so than before) and has a reluctance to accelerate unless I use the kick down - at which point, it drops to 2nd or 3rd and screams like hell.
I have to admit, it does seem to be getting better the more I drive it but it's still not what I would expect an auto box to be doing - especially as it was abosolutely fine before the original fault appeared.
I can only presume there's some sort of sensor that's not working properly. Anybody got any ideas?