have tumble generator valve stuck open is there any easy way to sort this thanks for any info

It could be a wiring fault. They could just be stuck, due to carbon or general grime. Or the sensor could be in the wrong position but no easy fix I'm sorry to say. Other then getting in there and checking. I don't know of any other way. :(
 

probably a good clean would cure it

2nd Jays comment best thing to do but you can check the rest whilst in there, or the garage.

is it easy to get to or will a few parts have to come out

Few parts need removing, if it was the sensor I don't think it is. there is two, one side would be easy the turbo side is pure hell from what I have been told. I've not had to change one myself touch wood. Would I have a go myself not sure :)

 

If I can find a how to guide or a you tube video will link it here for you mate :(

cheers and will call a garage for an estimate hope not too costly

No problem let us know what they say out of interest. I will try look for a how to be handy anyway ;)