KevinH said:
Yes it does have a knock sensor.
It's located on the inlet side of the block, but you will probably have to remove the starter motor to remove it.
If you require a replacement it is part #: 12567711
Hope this helps. 🙂
Yes definitely. I just couldn't find any info on this. I've found several people on the internet saying it doesn't have one, and I couldn't find it in Opel TIS, but I thought that this is needed in order to protect a engine against misfires or anything other that could cause the engine to have incorrect ignition timing. So couldn't imagine it doesn't have one. Thx!