What are the consequences of not replacing the engine mount rubber?
2 Answers
The main symptoms of a damaged engine mount rubber that is not replaced include: steering wheel vibration at idle, body vibration, and loud body resonance noise. Location of the engine mount rubber: In ordinary sedans, the engine mount rubber consists of a rubber elastic block with two separate screws installed above and below it. The upper screw is attached to the engine, while the lower screw is attached to the vehicle frame, relying on the middle rubber block for elastic cushioning. Function of the engine mount rubber: The engine mount rubber is the rubber buffer block that connects the engine to the vehicle frame, serving to reduce the transmission of engine vibrations to the cabin. Since the engine generates some vibrations during operation, this component is designed during car manufacturing to prevent these vibrations from being transmitted to the cabin.
Not replacing the engine mounts can lead to some nasty consequences, as I've learned from years of driving experience. The vehicle's vibrations become increasingly noticeable, especially during low-speed starts or when idling at a red light—the steering wheel and seats shake incessantly, making it feel like riding a vibrator. This instability can cause the engine to shift out of position, and without proper fixation, it may collide with nearby components, such as the exhaust pipe, which can get rubbed and produce strange noises or even damage. Over time, the drivetrain, including the transmission connection, can also suffer strain, increasing the risk of costly repairs. More critically, at high speeds, amplified vibrations degrade handling performance, potentially making the car unstable during sharp turns and compromising driving safety. Trying to save money by delaying replacement might end up costing thousands more to fix other damaged parts. It's simply not worth it. If you notice shaking, get it checked and replaced promptly.
