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88 Headlight motors unpredictable by Haggerty
Started on: 11-05-2024 10:44 AM
Replies: 3 (86 views)
Last post by: donuteater306 on 11-08-2024 05:31 PM
Haggerty
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From: Fountain, CO
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Report this Post11-05-2024 10:44 AM Click Here to See the Profile for HaggertySend a Private Message to HaggertyEdit/Delete MessageReply w/QuoteDirect Link to This Post
If I switch my headlights, they will both go up and down, but they will stop at random spots on the way up. To get them to come up all the way I'll push the running lights on to keep them from coming down while I feather the headlight switch until they stop on their own, I'll release it and then feather it again, each time they go a little bit higher.
Would this be motors going bad or some sort of control module for them?
They never end up in the same spots when done and I have to manually adjust them so i'm not blinding people, or so they arent pointed straight into the ground.
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88Fingers
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Report this Post11-05-2024 01:08 PM Click Here to See the Profile for 88FingersSend a Private Message to 88FingersEdit/Delete MessageReply w/QuoteDirect Link to This Post
Could be a sour Headlight Control Module mounted up in the Left front fender well or the condition of the nylon dowel pins in each motor gear mechanism. Common issue for Gen 2 system
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Vintage-Nut
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Report this Post11-05-2024 04:13 PM Click Here to See the Profile for Vintage-NutSend a Private Message to Vintage-NutEdit/Delete MessageReply w/QuoteDirect Link to This Post
Check the headlight switch first:
https://www.fierostore.com/.../Detail.aspx?s=51426

2nd Generation Headlight Motors:

If your headlights fail to rise and the motors keep spinning, check/replace the bushings/dowels/pins in the motor gear.
Both Rodney Dickman and The Fiero Store sell kits.

If the motors do not run, it is more likely is the Headlight Control Module.

If you need a Headlight Control Module, I can dig a thread with an aftermarket source which is cheaper than GM's Module which it is still available but double the cost or more....

------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles

[This message has been edited by Vintage-Nut (edited 11-05-2024).]

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donuteater306
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Report this Post11-08-2024 05:31 PM Click Here to See the Profile for donuteater306Send a Private Message to donuteater306Edit/Delete MessageReply w/QuoteDirect Link to This Post
Sounds like a bad electrical connection. First thing I would do is take the headlight switch apart and clean the contacts. Then I would pull the headlight control module and float the solder on all soldered joints.

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