What Causes a Car to Fail to Start with Abnormal Noises?
4 Answers
Car failing to start with abnormal noises can be due to issues with the engine ignition system, a depleted battery, or the magnetic switch of the starter motor. Below are detailed explanations: Engine Ignition System: If the car initially starts without issues but the starting time gradually increases until it suddenly fails to start one day, this is likely a problem with the engine's ignition system or fuel supply system. In such cases, it is necessary to consult a professional mechanic for repairs. Depleted Battery: If the ignition and starting have always been smooth but suddenly fail one day, it is likely due to a depleted battery. Magnetic Switch of the Starter Motor: If the headlights function normally, the issue might be an open circuit in the protective coil of the starter motor's magnetic switch.
Last time my car wouldn't start and made a strange clicking sound, which really worried me. I asked a mechanic, and he said it was most likely due to insufficient battery power. The clicking sound during startup is the starter relay working hard but not getting enough electricity, resulting in the engine not turning over. It could also be a problem with the starter motor, such as worn motor bearings, causing a squealing sound. When I encountered this situation myself, I tried jump-starting the car using a friend's battery, and it worked, solving the problem. I recommend paying attention to battery maintenance regularly. High temperatures in summer or low temperatures in winter can drain the battery faster, so check the voltage periodically to ensure it stays above 12V. If the battery runs out, recharge or replace it promptly to avoid being stranded. Also, if the motor makes a buzzing sound without engaging, avoid multiple attempts to start the car to prevent damaging the motor components.
Failure to start accompanied by abnormal noises is commonly caused by battery or starting system issues. The clicking sound during startup is often from the relay, indicating the battery voltage is below 10V and unable to power the starter motor. If you hear a buzzing or squealing noise, the starter motor internals may be damaged, such as a stuck ring gear or failed bearings. Unstable current or poor grounding can also trigger unusual sounds. I've personally dealt with a similar issue—testing showed the battery voltage was only 11.5V, and replacing it solved the problem. For prevention, check monthly that battery terminals are clean and corrosion-free, and lubricate starter motor bearings every two years. If abnormal noises come with severe vibrations, it could signal internal engine problems requiring professional diagnosis to avoid escalating repair costs. Bottom line: don’t delay repairs to prevent roadside breakdowns.
Last month, my car wouldn't start and made a squeaking noise, so I suspected it was a motor issue. The failure to start along with strange sounds was really frustrating. After consulting a technical friend, I learned the main causes could be an aging battery with insufficient power, a seized starter motor bearing, or a short circuit in the wiring. The squeaking noise usually indicates wear in the motor components. I tried jump-starting it without success, and after taking it to the repair shop, it was confirmed that the motor needed replacement. The strange noise actually served as a warning signal, helping to quickly identify the source of the problem. My advice is not to panic when such issues arise—first, turn off all electrical devices and try restarting. If that doesn't work, call for roadside assistance rather than forcing it, to avoid damaging the car or causing a fire.
