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Resonance Caused by Thermal Fatigue Aging?

3 Answers

SanGeorge

07/30/25 12:02am

Buick Envision vehicle resonance is caused by thermal fatigue aging of the engine due to prolonged usage. Below are the detailed reasons for resonance caused by thermal fatigue aging: 1. Causes and solutions for Buick Envision vehicle resonance: If the vehicle has been used for a long time, resonance may be caused by thermal fatigue aging of the rubber in the engine mount pads. It is recommended to replace the aged components. 2. Engine misfire; resonance may also be caused by deformation or improper installation of the engine guard plate. It is recommended to reinstall or replace it. Additionally, car resonance can result from issues with the idle speed control system. It is advised to visit a 4S store for prompt resolution.

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JanelleDella

08/16/25 3:48am

Thermal fatigue aging can indeed lead to resonance issues, especially in components subjected to frequent thermal cycling. For instance, the rubber mounts of automotive exhaust pipe brackets, when exposed to prolonged alternating high temperatures from the engine and low ambient temperatures, gradually harden and crack, losing their elastic damping properties. This alters the exhaust pipe's natural frequency, making it prone to resonate with specific engine RPM ranges (e.g., 1500-3000 RPM), resulting in noticeable steering wheel and pedal vibrations during driving. Having serviced several decade-old vehicles, replacing aged mounts consistently resolved such vibrations. We recommend owners periodically inspect these rubber components to prevent accelerated aging and potential part fractures.

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VonEli

10/19/25 5:33am

Last week, I repaired a car that experienced resonance due to thermal fatigue aging. The engine mount rubber bushings of that vehicle had undergone countless thermal cycles over eight years, causing surface cracks and a decrease in the rigidity of the mounting system. As a result, whenever the engine reached 2000 RPM, the entire dashboard would buzz, and the owner thought the engine was failing. This is actually a chain reaction of material fatigue: rubber hardening ➡️ damping failure ➡️ component resonance. If you encounter a similar situation, don't panic. Focus on inspecting rubber components exposed to long-term heat, such as engine mounts and exhaust pipe hangers. Replacing them will solve the vibration issue 90% of the time.

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