Cliff: Created page with "'''Headlight motor repair''' is an overview of repair and rebuilding work for the pop-up headlight motors used on the Pontiac Fiero. The Fiero used two different factory headlight motor systems. The 1984-1986 cars use Gen 1 headlight motors, while the 1987-1988 cars use Gen 2 headlight motors. Repair procedures and parts differ between the two generations. == Overview == Headlight motor repair may involve replacing worn gears, replacing bushings, cleaning..."

2026-07-06T18:15:34Z

Created page with "'''Headlight motor repair''' is an overview of repair and rebuilding work for the pop-up headlight motors used on the Pontiac Fiero. The Fiero used two different factory headlight motor systems. The 1984-1986 cars use Gen 1 headlight motors, while the 1987-1988 cars use Gen 2 headlight motors. Repair procedures and parts differ between the two generations. == Overview == Headlight motor repair may involve replacing worn gears, replacing bushings, cleaning..."

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'''Headlight motor repair''' is an overview of repair and rebuilding work for the pop-up headlight motors used on the [[Pontiac Fiero]].

The Fiero used two different factory headlight motor systems. The 1984-1986 cars use [[Gen 1 headlight motors]], while the 1987-1988 cars use [[Gen 2 headlight motors]]. Repair procedures and parts differ between the two generations.

== Overview ==

Headlight motor repair may involve replacing worn gears, replacing bushings, cleaning internal contacts, repairing wiring, correcting mechanical binding, replacing relays, or diagnosing the [[Headlight control module]].

Before repairing a motor, first identify which headlight system is installed.

== Applies to ==

This article applies generally to Fiero pop-up headlight motor repair, but details differ between:

* [[Gen 1 headlight motors]] - 1984-1986
* [[Gen 2 headlight motors]] - 1987-1988

Some earlier cars may have been converted to the later Gen 2 system.

== Common symptoms ==

Headlight motor repair may be needed when:

* A motor runs but the headlight door does not move
* A motor keeps running
* A headlight door does not open
* A headlight door does not close
* A headlight door moves slowly
* A headlight door stops partway
* A grinding, rattling, or clicking noise is heard
* Operation is intermittent
* One side works and the other does not

== Identify the system ==

Before ordering parts or following a repair guide, identify the system.

* 1984-1986 Fieros normally use the [[Gen 1 headlight system]].
* 1987-1988 Fieros normally use the [[Gen 2 headlight system]].

The two systems use different motors, control methods, wiring, and common repair parts.

== Mechanical inspection ==

Before disassembling a motor, inspect the mechanical parts around it.

Check:

* Headlight door movement
* Linkage movement
* Pivot points
* Motor mounting
* Obstructions
* Body panel interference
* Manual knob movement

A binding door or linkage can make a good motor appear faulty.

Related topics:

* [[Headlight door binding]]
* [[Headlight linkage]]
* [[Headlight doors]]

== Gen 1 motor repair ==

Gen 1 motors may require repair of internal gears, contacts, limit-switch mechanisms, or related parts.

The Gen 1 system also depends on relays, so relay faults should be considered before assuming the motor itself is bad.

Related topics:

* [[Gen 1 headlight motors]]
* [[Gen 1 headlight system]]
* [[Headlight relays]]
* [[Headlight motor isolation relay]]

== Gen 2 motor repair ==

Gen 2 motors commonly fail because of deteriorated internal bushings or worn gears. A motor may run without moving the headlight door correctly.

The Gen 2 system also depends on the [[Headlight control module]], especially if both motors are affected.

Related topics:

* [[Gen 2 headlight motors]]
* [[Gen 2 headlight system]]
* [[Headlight control module]]
* [[Headlight motor parts]]

== Electrical checks ==

Electrical checks may include:

# Checking battery voltage.
# Checking fuses and power supply.
# Checking grounds.
# Inspecting connectors.
# Checking for damaged wiring.
# Testing relays on Gen 1 systems.
# Testing or substituting the control module on Gen 2 systems.
# Checking power and ground at the motor.

== Rebuilding ==

A headlight motor rebuild may include:

* Removing the motor
* Opening the gear housing
* Cleaning old debris or grease
* Inspecting the gear
* Replacing bushings or worn parts
* Cleaning contacts where applicable
* Reassembling the motor
* Testing operation before final installation
* Confirming the headlight door moves freely

== Common mistakes ==

Common mistakes include:

* Ordering parts for the wrong generation
* Assuming the motor is bad without checking binding
* Ignoring bad grounds or connectors
* Ignoring relays on Gen 1 systems
* Ignoring the control module on Gen 2 systems
* Mixing Gen 1 and Gen 2 diagnostic steps
* Testing the motor without securing moving parts
* Reassembling the linkage incorrectly

== Safety ==

Headlight doors and linkages can move unexpectedly during testing. Keep fingers, tools, and loose clothing away from moving parts when power is applied.

Disconnect power when disassembling motors or working on wiring.

== Notes ==

Many Fiero headlight motor problems are repairable. A complete motor replacement is not always necessary.

Correct diagnosis depends on identifying the system generation and separating mechanical, motor, wiring, relay, and module faults.

== See also ==

* [[Headlight motor problems]]
* [[Gen 1 headlight motors]]
* [[Gen 2 headlight motors]]
* [[Gen 1 headlight system]]
* [[Gen 2 headlight system]]
* [[Headlight control module]]
* [[Headlights]]
* [[Electrical system]]

[[Category:Fieropedia]]
[[Category:Headlights]]
[[Category:Electrical system]]
[[Category:Service procedures]]
[[Category:Diagnostics]]

Headlight motor repair - Revision history