Hi Doug

I am afraid that sounds like the problem, have had another look at the wiring loom and there’s nothing out of place. Have also had a look on you tube on replacing the EGR on a Duratec and it looks a nightmare so beyond my limited capability. Even found something online that said the smell can be like molten plastic.

Good news is I can now sound almost knowledgeable on the likely cause when I talk to the garage.