Well the Rangie is having the last laugh.
Changed the tensioner, and idler pulley, things were pretty much the same. Although the bearing in the idler pulley was shot.
Whilst, getting someone to turn the power steering, the steering pulley would stall. So it's a new steering pump at least.
Then having just one last look, it's not just the power steering pulley that is stopping, everything is stopping including the crank pulley.
So the original, name of this thread was correct, but at least it's a definitive diagnosis.
So if your steering goes heavy, and your battery light blinks when turning, check your crank pulley is turning. Oh the engine temp was a little higher too.
Who would a thunk it
Not looking foreward to getting that pulley off.
Rangie is back in the garage having a good snigger to itself.