Now identified by MMC as a faulty valvetronic motor, a BMW part. The score so far - five radiators and now two valvetronic motors, the latest just two months out of warranty. Of the 11 Morgans I have owned the CX is the least reliable by far.
Interesting and very important part of your engine. The conventional throttle body controlling inlet air is replaced by a system varying inlet valve openings for each cylinder, controlled by a valvetronic motor operating an eccentric shaft to cover all cylinders as below.
![[Linked Image]](https://trade.mechanic.com.au/images/dmImage/StandardImage/Valvetronic-operation1.jpg)
Does seem mechanically complex never mind the electronics. Being BMW probably very reliable though, so somewhat surprising you have had two motors fail.
