This is my first 'help' post, so hopefully, I've done this right!
I recently added a 2000 Steptronic to my existing 2000 MGF with a manual gearbox.
I picked the Steptronic up for next to nothing as it was listed as 'spares or repair' due to steptronic being faulty. Speaking to the owner, the car was serviced and then immediately afterwards no gear could be selected even though shifter would move backwards and forwards and showed PRND in display. As a result, he parked it in his barn and there it stood for 4 years.
When I collected it, I realised that it's actually a tidy car and has been well looked after. I also knew what the problem was with the gearbox and upon getting the car home and on my 4 post ramp, I could see that the selector rod had snapped in 2. New one ordered, fitted and gearbox working fine again.
I have since changed the cvt fluid (with the correct fluid) and cleaned up the front and rear connectors as they were mucky.
Car drives fine and goes up and down through gears 1 to 4, but, here comes the problem. Once it gets to '4th', the car will not go into 5th and 6th, so at 60mph, it's revving high. I have tried putting the box into manual mode and even though I can select 5 and 6 so that it shows in the display, the car still sits at maximum 4th gear. It will, however, move nicely between gears 1 to 4. I have exhausted everything that I can think of, have googled and searched and found various steptronic issues, but, nothing like this. It's also odd as this is a CVT gearbox, so it doesn't have physical gears, so it's almost as if the belt isn't being 'pushed' far enough up the cones. I did wonder if the gearbox isn't sensing the correct roadspeed or revs?
Has anyone got any ideas? Any help greatly received.
Thanks in advance
Terry