The headlights on my 1987 GTA seem to want to "go down" when I encounter rough roadways (bumps). WTF? Has anyone encountered this and is it a worn out piece that helps hold the lights in position or does it have something to do with the mechanism that delivers the headlights to their up and down position? I was told that it is an "air" system that puts them up and down but haven't checked that out and the dud is a moron... Thoughts, Thanks,

Ken
MN

 

The headlight motors in these cars are fully electric. You'll have to go Very old school to find vacuum controlled headlights

Sounds like your headlight motors just need a simple rebuild

Inside of the large gear there are 3 small plastic cylinders that act as bushings. Overtime the originals dry out and crumble to dust

 

If the motor seems solid then it could be the headlight module. On your firewall, near the brake booster, there should be a square box with wires going into the front on both sides. That controls your headlights when they go up and down. There is a relay inside it. Take it apart and make sure nothing is burned off or disconnected...

 

You need to rebuild the headlight actuators using the TDS 207280 $6.75 or TDS 209280 $20.25 headlight repair kits.

Lon Salgren

 

Could also be sloppy mechanical linkage, the lifting arm.

On my driver's side, that is what mine is. Fully up, I can wiggle it up/down about 1/2". Nothing wrong with my motor or controller. Just slop in my linkage.