What Causes the Volkswagen Touran to Shake When Cold?

[TaliaRose]

Reasons for the Volkswagen Touran shaking when cold: Low Temperature: One issue faced during cold starts is low temperature, especially in northern cold regions. If the spark plug gap is too large, leading to insufficient ignition energy, it can easily result in ignition failure, causing individual cylinders to fail to ignite properly, leading to weak starts and shaking. Air-Fuel Mixture Issue: Shaking during cold starts can also be caused by the air-fuel mixture being too lean or too rich. Problems with the air-fuel mixture may arise from faults in the closed-loop control system. Since the exhaust pipe temperature hasn't reached the required level during a cold start, the oxygen sensor may not be at its working temperature or could be damaged, resulting in shaking during cold starts.