Sure mines stated squeeking, but I've just looked online for a replacement seems that's it's got a shaft and bearing tensioner the clamps to the alternator itself

Is the tensioner part of the cam-belt assembly?

An exchange unit at local motor factors it's 113 quid and I don't know if that's both parts or not lol

 

If its similar to a tranny connect the aux belt tensioner is at the back of the engine and the pas pump bolts to it.

 

Yer I assume it as as a connect is a mk1 focus engine bay and it uses the same 1.8 engine

Is the alt at the rear of the engine then? It sounds like alt belt squeel on a bearing so looking at the parts available I'm guessing it's prob the tensioner

 

On the connects its at the front but im sure on focuses the alternator drives something else too.

 

more than likely the extension shaft of the alternator.has a bearing and rubber bush on it which sometimes collapses or splits.worth taking that off and giving it a spin

 

It's typical I went out there to have a look this morning and no bloody squeel lol

Had a quick look through the Haynes manual too seems the aux belts dose bloody loads on the tdci engines! I may start with the tensioners and a new belt and see how I go Ita defo some sort Bering squeel