This has probably been aired before but has anyone else had experience with the CVT box in a 45 ?
I had one from new, it was a 1.8 in anthracite and was superb to drive. Extremely smooth, no lag when pulling away and easily did 40 mpg.
Unfortunately I had three (yes, three) replacement gearboxes. Each time strange noises started coming from the box. The first time at about 20K miles it was a 'traditional' whining sound varying with road (not engine) speed. The next time it was horrible 'scraping' noises. This gearbox was supplied to MGR by the German company ZF (now Sachs-ZF or ZF-sachs) and I researched this type of transmission quite a bit. I spent a lot of time at Longbridge at the time as a contractor and discussed the problems with engineers in Powertrain but never really got a definitive answer. I even got to know the ZF representative at Longbridge. The dealer denied that this was a problem they knew of.
I even wrote to John towers, not complaining but thought he should be made aware that ZF were supplying duff gearboxes.
My research indicated that this steel belt drive tranmission was most suited to low power vehicles and perhaps the 1.8 torque was a little beyond its capabilities and needed further development.
Anyone else experienced this ?
Hi - I'm also experiencing some issues with the ZF CVT as I have two consecutive 45s both displaying strange 'symptoms' have had their engines changed...drove perfectly before, now the transmission is noisy.
I'm also seeking some expert opinion.
There's a recalibration process apparently known as Fast Adaption (covered in other posts) and I'm currently trying to ascertain how to start the procedure to see if this has any effect.
If you Google "cvt fast adaption" about the 3rd listed item is an Adobe .PDF Description Automatic Gearbox. This is a ZF document that whilst not addressing the issue, describes the transmission.
Both of my vehicles have covered less than 40K miles, both suffered HGF, both had engine swaps and then both have developed strange transmission noise.
The second vehicle sounds like a creaky barn door until about 10 mph when everything quitens down.
Let me know how you get on. Perhaps there should be a 'sticky' for all Stepspeed related issues. Note, that this electronic box differs from the CVT in earlier 200/400 models.