What Are the Reasons for Severe Vibration in the Truck Cab?

[MacJohnny]

Reasons for severe vibration in the truck cab are as follows: 1. Severe engine carbon deposits: The most common cause of vehicle vibration is a dirty throttle body or excessive carbon buildup in the fuel injectors. When the vehicle starts, gasoline adsorbed on the carbon deposits is sucked into the engine cylinders for combustion, causing the air-fuel mixture to fluctuate between lean and rich, resulting in idle vibration after a cold start. 2. Ignition system issues: One of the causes of vibration is poor performance of the spark plugs, high-voltage wires, or ignition coils. 3. Unstable oil pressure: Abnormal fuel pump pressure or incorrect readings and poor performance of the intake pressure sensor can cause body vibration.