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Can I drive my car with bad motor mounts?

The short answer is no, you should not drive your car with bad motor mounts. Motor mounts are an essential component of your vehicle's suspension system, and driving with faulty mounts can lead to serious damage and safety issues. In this article, we'll explore the importance of motor mounts, the consequences of driving with bad ones, and what you should do if you suspect your motor mounts are failing.


What Are Motor Mounts?


Motor mounts are the rubber or metal components that secure your car's engine to the vehicle's frame. They serve two primary functions: 1) They absorb the vibrations and movements of the engine, preventing them from being transferred to the rest of the car, and 2) They keep the engine properly aligned and positioned within the engine bay. This ensures smooth and efficient power delivery from the engine to the wheels.


Consequences of Driving with Bad Motor Mounts


Driving with bad motor mounts can have several negative consequences, including:



  • Increased Vibrations and Noise: As the motor mounts wear out, the engine will become less isolated from the rest of the vehicle, leading to increased vibrations and noise that can be felt and heard inside the cabin.

  • Misalignment and Damage: With the engine no longer properly secured, it can shift and become misaligned, causing damage to other components like the driveline, suspension, and even the engine itself.

  • Reduced Handling and Stability: The engine's movement can affect the vehicle's handling and stability, making it more difficult to control, especially at higher speeds.

  • Safety Risks: In extreme cases, a completely failed motor mount can cause the engine to shift dramatically, potentially leading to a loss of control or even a collision.


Given these risks, it's crucial to address any issues with your motor mounts as soon as possible to ensure the safety and reliability of your vehicle.


What to Do if You Suspect Bad Motor Mounts


If you suspect your motor mounts are failing, the best course of action is to have a professional mechanic inspect them. Some signs of bad motor mounts include:



  • Excessive engine movement or "rocking" when the engine is running

  • Increased vibrations or noise, especially at idle or under acceleration

  • Visible cracks, tears, or deterioration in the rubber or metal components of the mounts


If the motor mounts are found to be faulty, they will need to be replaced to restore the proper engine alignment and isolation. This is a relatively straightforward repair, but it's important to have it done by a qualified mechanic to ensure the job is done correctly and safely.


In conclusion, driving with bad motor mounts is not recommended, as it can lead to a range of safety and mechanical issues. If you suspect your motor mounts are failing, it's best to have them inspected and replaced as soon as possible to maintain the integrity and performance of your vehicle.

What are the symptoms of a bad motor mount?


Signs you need to check or replace the motor mounts are clunking or knocking noise when shifting from park to reverse or park to drive, vibration at idle, vibration at the brake pedal, engine movements, fluid leaks from engine mount, cracked or missing rubber on mount.



How long does it take to replace motor mounts?


In some cases, a professional mechanic might be able to replace some mounts in about one hour, while in many other instances, a mount replacement can take several hours and even an entire workday.



How much does it cost to fix a motor mount?


Replacing an engine mount can be relatively inexpensive or costly, depending on the make and model of the vehicle. On average, replacing an engine mount can cost anywhere from $446 to $498.



How long can you drive on bad motor mounts?


Can You Drive with Bad Motor Mounts? Don't wait to fix a bad motor mount. While you may not have to pull over right away and call a tow truck, you should address a bad motor mount as soon as possible. The longer you drive with bad motor mounts, the more they will deteriorate.



Are engine mounts urgent?


The importance of replacing worn-out engine mounts promptly
What's more, a worn-out engine mount can affect the overall health and performance of your car, causing other important internal components, such as your fan belt or radiator hose, to become loose or damaged as a result.



Will bad motor mounts cause transmission problems?


The answer is almost always, no—a bad transmission mount will not cause the transmission to slip. But there may be some rare cases where a failed mount causes enough movement to throw off the manual shift linkage or the throttle valve linkage (on an older vehicle), thereby impacting shift quality and shift timing.



Is it worth it to fix motor mounts?


The vibration generated from worn engine mounts can have a noticeable impact on other vehicle components, such as fan belts or radiator hoses, leading to stretching or snapping. So, replacing worn engine mounts is vital to the overall health of your machine.



How long does it take a mechanic to replace engine mounts?


In some cases, a professional mechanic might be able to replace some mounts in about one hour, while in many other instances, a mount replacement can take several hours and even an entire workday.



What happens if you don't fix motor mounts?


If an engine mount is damaged, its anti-vibration properties weaken. An increase in vibrations leads to the engine making more of a sound than usual – something that can be extremely damaging to an engine if it continues for a long time.



Is replacing engine mounts a big job?


For some vehicles and motor mounts, you may need to remove parts of the subframe or other engine bay parts to access the mounts, but if you take the time and have the correct tools, replacing your motor mounts is usually a Saturday job.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.