hi guys we are a bit new to this so please be patient. we have a 52 plate vectra c sxi. we have had a few problems with our power steering lately. it stiffens up when turning then corrects itself. this is very intermitant but still very annoying. are there supposed to any warning lights coupled up with this as we are getting none. we changed our battery 2 weeks ago as the garage said the alternator was fine. This morning we have had the emissions light come on and the power steering played up then. could they be linked? thanks for any advice guys in advance.