Why Does the Car Body Shake Severely When the Fan is Running?
1 Answers
Severe car body shaking when the fan is running can be caused by a dirty air filter, a broken high-voltage wire, and other reasons. Below are the detailed explanations: 1. Causes: Dirty air filter; Broken high-voltage wire; Spark plug lifespan; Low idle speed; Abnormal water temperature; Clogged fuel injector; Carbon deposits and oil sludge blockage; Low cylinder pressure. 2. Details: A dirty air filter, which is designed to protect the engine and reduce wear. A broken high-voltage wire refers to a break in the conductor core of the high-voltage wire. Spark plug lifespan, after exceeding 40,000 kilometers, the ignition efficiency significantly decreases, affecting ignition. Low idle speed, the engine idle speed is preset in the computer, and if the RPM drops below a certain range, the car's computer will automatically adjust. If the idle speed is too low and causes shaking, it indicates that it is beyond the computer's control range. Abnormal water temperature, the engine operating temperature has a normal range. If the water temperature is too high, it can cause early ignition timing, changes in the air-fuel mixture ratio, thinning of the engine oil viscosity, and reduced lubrication performance. Clogged fuel injector, the fuel injector in an electronic fuel injection car is a key component for fuel injection, with a lifespan that can reach hundreds of thousands of kilometers. The throttle body, idle valve, and intake ports can develop carbon deposits and oil sludge blockages over time, leading to poor air intake, affecting idle stability, and causing shaking. Low cylinder pressure can result in engine misfire and shaking, which can be checked using a cylinder pressure gauge.
