headlight motor (Page 1/1)
itzikbns FEB 15, 03:22 PM
Hi,
I have an 86 SE 2.8 manual 4 speed, it's a ferrari 308 replica, my driver side headlight works good, the passinger side is weak, I checked the current to both, it's the same, I checked doors load, it's a two doors at each side. the original Fiero and the aaded one of the replica, both are nearly the same, all gears inside the motor are in perfect condition and the rubber tubes as well, it's perfectly assembled and srop OK at both ends, please see video attached, is th here any other ideas side buying a new one which is quite expensive

------------------
Itzik

Vintage-Nut FEB 15, 03:34 PM
1984-86 Pontiac Fiero Headlight Repair
https://www.wc-autoparts.co...ro-headlight-repair/

Or Swap Gen 1 to Gen 2 which are better......
cartercarbaficionado FEB 15, 05:48 PM

quote
Originally posted by itzikbns:

Hi,
I have an 86 SE 2.8 manual 4 speed, it's a ferrari 308 replica, my driver side headlight works good, the passinger side is weak, I checked the current to both, it's the same, I checked doors load, it's a two doors at each side. the original Fiero and the aaded one of the replica, both are nearly the same, all gears inside the motor are in perfect condition and the rubber tubes as well, it's perfectly assembled and srop OK at both ends, please see video attached, is th here any other ideas side buying a new one which is quite expensive





you need a replacement motor unfortunately. buy one off fiero store
the problem is what i had faced just a little less extreme. your brushes and contacts are getting worn down and weak and it needs to be rebuilt
i put new brushes in mine and it worked once before shorting out the commutator and never moved again. luckily pick and pull got a few fieros and they all had rebuild motors
1985 Fiero GT FEB 15, 06:56 PM
If each motor is having to lift 2 doors, each with the same tension as the original single door, then that will be a recipe for worn, overheated motors and wiring. The Fiero doors alone already have a lot of load, compared to say the firebird.
itzikbns FEB 16, 01:03 AM

quote
Originally posted by Vintage-Nut:

1984-86 Pontiac Fiero Headlight Repair
https://www.wc-autoparts.co...ro-headlight-repair/

Or Swap Gen 1 to Gen 2 which are better......



Thanks for the reply, t
what do you mean by swapping to Gen 2? using the 87-88 motor? could you please elaborate?

------------------
Itzik

Vintage-Nut FEB 16, 11:08 AM
Our leader wrote a post on this subject two decades ago with photos:

Gen. 1 to Gen. 2 Headlight Swap by Cliff Pennock
https://www.fiero.nl/forum/...060811-2-071514.html

Dennis LaGrua FEB 16, 04:09 PM

quote
Originally posted by itzikbns:

Thanks for the reply, t
what do you mean by swapping to Gen 2? using the 87-88 motor? could you please elaborate?




In short, for the upgrade you will need the headlight motor harness, two newer headlight 87-88 motors and the headlight control module. Its an expensive proposition so I rebuilt mine on my 85GT. A good job is possible but not always easy. On the motors I did, the gears were OK so new gear inserts, and motor brushes had to be replaced. Rebuilding Gen 1 motors is probably not the best way to go but the most economical way. If the job is not done right, Gen 1 motors can stall latch up and there is a small possibility that they could catch fire. This can be remedied by a switch in the 12V supply wire.
There is a Corvette kit that replaces the old vacuum headlight motors with modified Gen 2 motors but AFAIK no one has yet adapted it to a Fiero. That system uses limit switches a unique control module.


------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 02-16-2025).]

Vintage-Nut FEB 16, 05:20 PM

quote
Dennis LaGrua:
Its an expensive proposition...



A Gen 1 headlight motor fire will be more expensive...

"An Ounce of Prevention Is Worth a Pound of Cure"

Fiero on Fire
https://youtu.be/2hEax-qFUuY

[This message has been edited by Vintage-Nut (edited 02-16-2025).]

Dennis LaGrua FEB 16, 08:57 PM

quote
Originally posted by Vintage-Nut:


A Gen 1 headlight motor fire will be more expensive...

"An Ounce of Prevention Is Worth a Pound of Cure"

Fiero on Fire
https://youtu.be/2hEax-qFUuY



Headlight motor fires are rare. Fire is just a rare possibility and I got that covered. A cheap solution is a switch on the white power feed wire that can be turned off when the headlights are not used, On all my Fieros I use a battery cutoff switch with a 10 amp fuse across the switch terminals. When in the off position this small feed keeps the ECM/PCM , clock and radio from resetting, provides theft and protection from any shorts in the system. When I go to start the car I just switch it to on and all systems are set to go.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "