Vibration (Startup) - Noises & Vibration Symptoms
Common symptoms and diagnostic guides.
Car shakes on morning start
Car shaking on morning start often stems from cold engine conditions, ignition/fuel delivery issues, or engine mount wear, and can be diagnosed with targeted checks.
Car shakes on cold start sometimes
Intermittent shaking on cold start usually stems from ignition, fuel delivery, or sensor issues that affect combustion before the engine reaches normal operating temperature.