Two years ago, my grandfather gave us his old '95 Prizm when he bought a new car. A few weeks ago, I decided that the old headlight bulbs were too dim and I replaced them with new ones. The light output is vastly improved, but with that change I noticed two other issues:
- The left headlight shakes up and down terribly with the vibration of the engine. This is mostly noticeable when the car is idling or accelerating at around 1000-1500 RPM (estimated) because the engine vibrates the most at those speeds, but it is vibrating a bit all the time. It looks to me like tightening the outboard (vertical) adjustment screw will fix this problem.
- The right headlight is pointing significantly upward. Interestingly, based on seeing other Prizms and Corollas at night, I think that this is actually an extremely common problem. I know that it is extremely annoying to other drivers, and it also means that I'm wasting light illuminating the trees instead of the road.
I have the service manual for the car, and it says this:
Using a No. 2 cross-recess screwdriver, aim the headlights ....
I tried to use several different screwdrivers, but I can't get the adjustment mechanisms to turn! Is there some trick I'm missing?
I am guessing that a "#2 Phillips" screwdriver did not work because it isn't wide enough, but it's hard to find a true "cross-recess" driver -- as I understand it, this is like a Phillips #2, but with little or no tapering toward a point. (Or should a regular Phillips #2 work here?)