Why Does the Car Shake More When It Gets Hotter?

[MadelineMarie]

It may be caused by carbon deposits in the engine or throttle body. Below is a related introduction to the reasons for car shaking: 1. Ignition system issues: Check the working condition of the spark plugs, high-voltage wires, and ignition coils. Poor performance of the ignition system or faulty spark plug firing can also lead to this type of problem. The solution is to check if the spark plugs have excessive carbon buildup and replace them if necessary. 2. Unstable oil pressure: If you have already cleaned the engine carbon deposits, cleaned the throttle body, replaced the oil gasket and spark plugs, but still notice the car shaking at idle, check the fuel supply pressure and the intake pressure sensor. Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor can cause the car to shake. The solution is to check the oil pressure and replace the components if necessary.

[KalebLee]

I've experienced my car starting to shake when it gets hot while driving, which is really annoying. This situation is often due to thermal expansion issues with engine components. When the temperature rises, metal parts expand, such as the piston rings and cylinder walls, causing uneven gaps that lead to inconsistent friction and unstable combustion. Engine oil may thin out at high temperatures, reducing its lubricating effectiveness and exacerbating vibrations. Sometimes, spark plugs or ignition system components fail when hot, causing misfires and shaking. I recommend regularly checking the cooling system and ignition components, and avoiding overloading the engine. If noticeable shaking occurs, have it inspected at a professional repair shop as soon as possible to prevent minor issues from turning into major repairs. Engine health is crucial—don't let hot engine shakes ruin your driving experience, especially during long trips. Be extra cautious.

[DelJack]

As someone who frequently tinkers with cars, I've noticed that when the car gets hot, it starts to shake, often due to issues with the electronic ignition system. The ignition coil or spark plugs may become unstable under high temperatures, leading to heat fade and causing misfires in the cylinders. Voltage instability can also exacerbate the problem. Additionally, excessive carbon buildup in the throttle body or fuel injectors can result in uneven fuel distribution when hot. From my personal experience, a simple scan with an OBD diagnostic tool can pinpoint the root cause. Replacing these parts with high-quality components usually solves the issue. Inadequate cooling and poor heat dissipation can also worsen engine overheating and shaking. Remember to keep the air filter clean and ensure proper coolant circulation. Don't delay addressing these issues—minor shaking could hide serious problems, affecting both daily driving comfort and safety.

[FaithRose]

I've also experienced engine shaking when the car gets hot, which is mostly related to cooling or lubrication. When the engine temperature rises, if the coolant is insufficient or the radiator is clogged, the engine oil becomes thinner and provides poor lubrication, increasing friction between parts and causing shaking. The oil pump or chain may also become loose when hot, leading to imbalance. Simply check for oil leaks under the car or the coolant level. Regular maintenance can prevent this, such as changing the engine oil every 5,000 kilometers. If hot engine shaking is not addressed promptly, it may develop into engine damage, which is really not worth it.