I have an 1987 Formula Firebird, and recently the right headlight
motor keeps running for a short time after the light is fully up or
down. Is there a limit or overcurrent switch that is in line? This
only occurs on the right headlight. The motor on the left stops as
soon as the motor reaches the fully up or down position.
1987 Formula Firebird, 5.0 TPI
5 speed manual
this motor is sealed:
All the stops are internal, from what I remember. There are only a few
adjustments in the outside, it sounds like the bevel gear has worn, and the
worm gear slips a bit after the linkage hits the stops.
Maybe time for a new one, unless parts are available.
Time to PING the man: bigfig, he's the resident genius on parts and
I hope this helps?
See other post by Bruce. This is a common problem that the aftermarket, not the
OEM has fixed with inguenity.
As I recall, GM will make you buy the whole ball of wax when the old parts can
easily be replaced/repaired.
Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director
'80 Carousel Red Turbo T/A, 27k orig.
'79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig
'84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 143k and still going....
'91 S10 Blazer 4.3Z
The balls inside the motor have finally given and now become a fine dust.
You'll need to get new internal bumpers. I bought them here:
Worked fine on both my headlights.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.