What Causes Severe Car Shaking in Winter?

2 Answers
DelDallas
07/24/25 12:16am
Here are the main reasons for car shaking in winter: 1. Engine mechanical failure, uneven cylinder pressure, and variations in spark plug ignition gap and timing control after prolonged use. 2. Intake system failure, intake pipe leakage, excessive carbon buildup on intake valves and pipes, and dirt accumulation on throttle bodies and intake pipe walls. 3. Engine management system failure, incorrect coolant and intake air temperature signals, and wiring issues. 4. Ignition system failure, wear and tear on components like spark plugs, ignition coils, and fuel injectors after prolonged vehicle use. 5. Fuel supply system failure, fuel injector leakage or blockage due to excessive internal carbon deposits.
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GemmaRose
08/10/25 8:03pm
As an experienced driver, I think there are quite a few reasons why a car shakes so badly in winter. The most common cause is aging spark plugs—cold weather makes old spark plugs fire unevenly, causing the engine to shake. Loose or damaged ignition coils can also cause this; I replaced a set last winter. The battery is another issue—voltage drops quickly in low temperatures, and unstable power supply during startup makes the engine shake severely. The fuel system is problematic too—gasoline condensation or clogged fuel injectors lead to incomplete combustion, making the car shiver. Additionally, low or frozen coolant affects the thermal cycle, worsening the shaking. In short, it's best to get a full inspection at the shop before winter arrives—don’t let small issues turn into big troubles, because driving safety comes first.
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