Hi,
My '91 Astra's left headlight is currently behaving in a strange way. Sometimes, when I switch the headlights on, the beam is angled down too low, and I can see on the road where it is aimed (and it isn't very far in front!). Even with full beams, the light is still clearly angled predominatly at the road. This makes driving on motorways and things particularly hazardous. The thing is, it doesn't always do it, and when I've checked to make-sure the lamp(s) are correctly fixed in place, they are. So what could be causing the problem? It's now been like this for four days (usually doesn't go on for that long) and I don't really like driving around at night because of this -- and it's probably illegal too.
Is there anything I can do? Should I try adjusting the beam aiming manually, or is this something worth going to a garage for, as is recommended? Because, sure, they can get it /just/ right, but surely I can tell if it's going to be shining at oncoming cars, etc. anyway?
Or does anyone else have any ideas of what could be causing it, aside from having to change the aim of the headlight -- which in itself seems a bit pointless, as I don't see how that can be the cause, and if the problem then solves itself again, and the beam aims up more, because I'll have changed the aim, it'll now be /even/ higher and will definitely be shining directly at oncoming cars.
Any help would be greatfully received!