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If a car starter is making grinding noise before or sometimes only after starting can it be caused by computer problem?

It is unlikely that the grinding noise you hear from your car starter is directly caused by a computer issue. The grinding noise is typically a sign of a mechanical problem with the starter motor or its related components. Here are some possible causes:

1. Damaged Starter Motor: The starter motor's internal components, such as the gears or bearings, may be worn or damaged, leading to grinding noises during the starting process.

2. Solenoid Issues: The starter solenoid, which engages the starter motor with the engine, may be defective or misaligned, resulting in grinding sounds.

3. Flywheel Ring Gear Problems: The flywheel ring gear, which the starter motor engages with, may be damaged, cracked, or have misaligned teeth. This can lead to grinding noises while starting the car.

4. Faulty Wiring: In rare cases, damaged or loose wiring connected to the starter motor can cause electrical issues leading to grinding noises.

It is important to note that engine mechanical problems can also create grinding sounds that may be mistaken for starter issues. A grinding sound accompanied by engine misfires, rough idling, or unusual behavior could be related to internal engine issues, such as a failing timing chain or camshaft issues.

If your car starter is indeed the source of the grinding noise, it is unlikely that a computer problem or glitch would be the primary cause. Instead, it is more likely a mechanical failure of one or more components associated with the starter motor or the engine.

If the grinding noise persists, it is recommended to have your vehicle inspected by a qualified mechanic or automotive technician to identify and address the underlying cause of the noise accurately.