Common malfunctions and causes of car starters-Manufacturers of automotive alternators and automotive starters

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Common malfunctions and causes of car starters

Jun 19,2025

Battery fault: such as insufficient battery power, loose or oxidized battery terminals, etc., resulting in the starter motor not receiving enough power. Control device fault: such as open circuit, short circuit or poor contact of the electromagnetic switch coil, ignition switch damage, etc., preventing the starter circuit from being connected.

Common malfunctions and causes of car starters

Starter motor not turning
Battery fault: Insufficient battery power, loose or corroded terminals, etc., preventing the starter motor from receiving sufficient power.
Control device fault: Open circuit, short circuit, or poor contact in the solenoid coil, ignition switch damage, etc., preventing the starter motor circuit from being connected.
Internal starter motor fault: Open circuit or short circuit in the DC motor armature winding, commutator erosion, severe brush wear, etc., preventing the starter motor from operating normally.
Starter motor weak
Battery fault: Insufficient battery power or low voltage reduces the power received by the starter motor, resulting in weak operation.
Internal starter motor fault: Bent armature shaft, excessively tight bearing wear, poor contact between commutator and brushes, etc., increase the operating resistance of the starter motor, making it weak.
Starter motor spinning freely
Transmission mechanism fault: Slipping or damaged one-way clutch prevents the starter motor pinion from engaging with the flywheel ring gear, causing the starter motor to spin freely.
Flywheel ring gear fault: Severe wear or damage to the flywheel ring gear teeth prevents the starter motor pinion from engaging properly, causing the starter motor to spin freely.

Maintenance and upkeep of car starters

Structural composition of an automobile

Related news

The 2021 Beijing Dongtian new production base construction project is progressing smoothly

Beijing Dongtian Auto Parts Co., Ltd. has built a new production base in Jinta Development Zone, Dingxing County, Baoding City, Hebei Province. The base covers a total area of 22 mu. The first phase (Workshops 1 and 2) will be completed and put into production by the end of June 2021. The second phase is planned to be completed by the end of December 2021. After the completion of the new base, the designed production capacity will reach 350,000 automotive starters and 250,000 generators.

In December, Beijing Dongtian invites you to the Frankfurt Auto Parts Show in Shanghai.

Beijing Dongtian Auto Parts Co., Ltd. will participate in the 2020 Frankfurt Auto Parts Show in Shanghai from December 2nd to 5th, 2020. Booth No.: 6.1 H32 (Remanufacturing Zone). We welcome colleagues from all walks of life to visit and guide us.

Maintenance points of car generator

Appearance Inspection: Regularly clean dust and dirt from the surface of the generator using a soft cloth or brush. Avoid using chemical cleaners. Inspect the generator's casing, cables, and junction boxes for damage or corrosion, ensuring their integrity.

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