Motor Mount Buyer's Guide
- Also referred to as the engine mount, the motor mount secures the engine and transmission in its proper position.
- There are usually three to four mounts holding the engine and transmission in place.
- Motor mounts have a lifespan of about 5-7 years and may be replaced by piece.
- Failing motor mounts are usually caused by poor installation, factory defects, and normal wear and tear.
- Some of the most common symptoms of a bad engine motor mount include too much vibration, rattling, misalignment, and damage.
- When getting a replacement motor mount, you should consider its fitment, features, and material.
- Replacement motor mount cost can fall anywhere from $33.00 to $400 at CarParts.com. It can be purchased either by piece or as a set.
Excessive noise when driving can point to several issues with your car, one of which is a problem with your motor mounts. Typically installed in a set of three or four, they hold the engine and transmission in place so that you can enjoy a smooth and problem-free ride. Once any of the installed motor mounts start to fail, you risk not only completely damaging your vehicle but also the lives of your passengers as well.
This is why it is important to always get your motor mount checked by your trusty mechanic and to be aware of the symptoms that show that it needs replacement. Before looking up those symptoms, you should understand its function first and the usual causes of its failure.
What is a motor mount?
The motor mount, also known as the engine mount, is made to prevent your engine and transmission from moving around the engine compartment. It also absorbs shock and vibration for a smooth drive. Normally, you’ll find three to four-engine mounts securing the engine and transmission.
Motor mount replacement
Motor mounts usually last for around 5-7 years and only need to be replaced when necessary. Although your vehicle has three to four engine mounts, it is not a must to replace everything in case one of them gets damaged or worn out.
You can choose to just change the faulty mount/s as needed. There are motor mounts sold per piece anyway, so this is a viable option. However, it might be better to change all your engine mounts at the same time so they will all have the same general lifespan.
Possible reasons for bad motor mounts
There are many reasons that can cause an engine mount to fail. Here are some of the most common causes:
Not being installed the right way
Faulty installation usually happens when trying to replace motor mounts on your own or getting someone to change them for cheap. To avoid failure brought about by improper installation, it is still best to get a licensed auto mechanic to install your engine mounts because they have the right tools and adequate knowledge to properly do so.
Being defective right from the start
There are instances when the engine mounts that come with the original assembly have factory defects right from the beginning. Automakers often announce this through a recall notice so keep your eyes out for news pertaining to your vehicle.
Regular wear and tear
Just like any vehicle component, the motor mount is not exempt from failure caused by regular wear and tear. Usually, this manifests through loosening or breaking of the engine mounts. At this point, you shouldn’t put off replacement for long as leaving your engine mount in such a condition can cause extensive damage to your vehicle.
Bad motor mount symptoms
Spotting a bad motor mount is quite straightforward. You just need to be mindful of the signs of failure and check if your vehicle manifests any of them. Read on below to know what these are.
Excessive vibration and rattling
If you start to feel a wave of vibration coming from the chassis, then you might have a failing engine mount. This is usually a sign that the engine has started rocking too much because of inadequate support from the mount.
Usually more obvious when your engine is in idle mode, too much rattling can also result from the engine being constantly in motion for so long that it has started hitting the other parts around it.
Engine becoming out of alignment
Naturally, when one of the mounts breaks or wears out, the engine will fall out of place. When this happens, the engine might obstruct the other parts of the vehicle that are close by, which can result in poor handling. To accurately diagnose this symptom, you might have to let your trusty mechanic do the job.
Cracks and deformities
When one of the engine mounts is busted, your engine can take a beating, leaving it cracked or deformed. Aimless and constant bumping into the corners of the engine compartment usually causes these. Likewise, the belts and hoses can be pulled beyond their limits, causing them to get tattered or ripped.
What to look for in a replacement motor mount
There are several factors you should consider when getting a motor mount replacement for your ride. First is its fitment. Its structure and material can differ depending on the make, model, and model year of a vehicle so make sure you are getting the right one. In relation to this, you should also consider the features. Some mounts have liquid inside to help reduce vibration, while others have vacuum controlled or electromagnetic properties.
How much are motor mounts?
Motor mount replacement sets that consist of both front and rear attachments can cost you around $33.00 to $400 at CarParts.com. Note that the price of the motor mount is relative to your vehicle’s specs as well as its make. To get the most suitable part matches for your ride, use the filters or search box above and indicate your vehicle’s year, make, and model. You can even go as specific as identifying its submodel, if applicable.
How to Choose the Best Motor Mount for Your Car
The primary role of the motor mount is to secure the engine to the chassis. Without it, your car's engine would shift and jolt inside the engine compartment, causing its sensitive components to get damaged. It's also responsible for keeping the vibrations from spreading throughout the entire body of the car. It's a vital component that affects your vehicle's performance and your riding experience, so it's only fitting that you choose the best one for you and your vehicle's sake.
A particular type to suit a specific application
There are four general types of motor mounts that are being offered in the market as of the moment. Each type has its own strong points and drawbacks, but picking one that suits your vehicle best entirely depends on your driving needs and your vehicle's requirements. Check out the following:
- Resilient type: When it comes to versatility, a resilient motor mount is your best bet. This type features a layer of rubber sandwiched between the motor and mount, effectively reducing the noise and vibration. It's a type that's highly recommended for large motor applications.
- Rigid type: If you're looking for a type that can provide better alignment between the motor and other auto mechanisms, then the rigid motor mount is the one for you. However, unlike the resilient motor mount, this one can't be used for larger motors since it may easily get damaged by an excessive amount of vibration. If you're planning to buy a rigid motor, keep in mind that it works best on smaller engines.
- Hydraulic type: When it comes to heavy-duty applications, the hydraulic motor mount is proven to deliver the best performance. Unlike the resilient type, the insulation of this one is made up of glycol or hydraulic gel or liquid, effectively absorbing larger amounts of noise and vibration.
- ??Nema C-face type: A Nema C-face motor mount is usually used as an adapter for vehicles that require a different mounting style. The flexibility of this type far surpasses the other three types of motor mounts; this one may be used in different circumstances where a standard mount won't work.
Other things to bear in mind
If you're planning to buy a remanufactured motor mount, make sure that you scrupulously inspect its condition. It should meet or exceed the specifications prescribed by your vehicle's manufacturer. Look out for signs of rust, damaged brackets, and missing bolts.
How to Install a New Motor Mount in a Few Simple Steps
Considering the amount of noise and vibration emanating from your vehicle's engine, isn't it astonishing how you can still drive comfortably inside it? Well, this convenience is all thanks to an auto part that's almost always overlooked—the motor mount! Unfortunately, like every other part of your vehicle, the motor mount is also bound to get damaged after a few years of use. Its rubber material may crack and deteriorate due to the excessive vibration and engine fluids that it's constantly subjected to. Once this happens, you need to replace it with a new one immediately. You don't need any advanced mechanical skills to do this, simply check out the following steps to help you accomplish this DIY task:
Difficulty level: Moderate
What you'll need:
- Floor jack
- Jack stands
- Ratchet and socket set
- Thread locking compound
Step 1: Park your car on an even surface to ensure your safety and convenience.
Step 2: Disconnect the negative cable of your car's battery to prevent possible electric shocks.
Step 3: Carefully lift your vehicle up using a jack and support it with the jack stands. Make sure that you adjust the stands securely to prevent the car from falling while you're doing the rest of the task.
Step 4: Using the jack, support the part of the engine near the motor mount that you have to replace. This is to ensure that you won't be putting additional weight and stress on the other mounts once you remove the faulty one.
Step 5: With your screwdriver, wrench, and ratchet and socket set, detach components and fasteners that may get in the way of removing the motor mount.
Step 6: Take the motor mount out of the engine block and vehicle chassis after unfastening the bolts that are securely holding it in place. You may also remove the bolts from underneath the car if this makes the task easier.
Step 7: Put the new motor mount in place. Don't forget to apply a bit of thread-locking compound to the bolts before fastening them back in.
Step 8: Put back the other components and fasteners that you removed earlier. Make sure they're in their right places to avoid any complications.
Installing a new motor mount takes around an hour to finish if done properly. For beginners, expect to get this job done in about an hour and a half.
Motor and Transmission Mount Matters
Motor and transmission mounts are simple, but necessary, components. They stabilize the main engine driveshaft. A broken motor and transmission mount can lead to numerous problems. If the transmission mount is busted, there is a loss of stability in the components it supports. This results to increased vibration and noise in the engine, which is then transmitted to the passenger compartment. Misalignment is another problem that arises from a broken transmission mount. Since the mount helps stabilize the vehicle transmission, it mut be aligned properly. Any ill-fiting ink between the transmission and the driveshaft can resultt to costly damage in the driveshaft.
What Purpose Does It Serve?
A motor and transmission mount secures the engine and the transmission to the frame of an automobile. It confines the vibrations within the automobile chassis, so that the shaking won't be felt in the other sections of the vehicle. This is important not just to have a smoother ride, but to protect delicate components from getting damaged.
How Much Does It Cost to Replace a Motor and Transmission Mount?
Considering the kind of vehicle you have and the brand you choose to get the component from, you can find motor and transmission mounts that are priced as low as $50 and as high as $550. If you drive a luxury car, then you might find the motor and transmission mount that you need for your automobile to be in the $300-$500 range. However, if you are just looking to extend the life of an old ride, then you can make do with one that costs even cheaper than $50.
Installation costs may vary depending on where you go to have them installed. But, you can save a lot more money by doing the work yourself. You only need to have the right tools and follow the correct instructions to accomplish the task. You don't have to be an expert to get the job done.
How to Install New Transmission Mounts
(Note: These are general instructions for all types of automobiles.)
- New transmission mounts
- Floor jack
- 2-4 jack stands
- Open-end wrench
- Ratchet wrench
- Penetrating oil
- Protective glasses
- Make sure your car is on a flat and solid surface. Get a floor jack and use it to elevate your automobile to a height that will make it easy for you to work under it. A simple way to know if it's lifted high enough is if the tires are at least three inches from the ground.
- Have your vehicle supported by jack stands. You will need two to four jack stands to keep your car off the floor while you work under it and provide you more safety.
- Place the armature of the floor jack below the transmission pan of the transmission.
- Elevate the floor jack until the armature is directly under the transmission pan and enough force has been given. Apply penetrating oil on your existing transmission mounts and let it be absorbed for five minutes.
- Use open-end and ratchet wrenches to get the transmission mount bolts loose. These bolts are what keep the rubber transmission mounts connected to the transmission or a transmission bracket.
- Elevate the floor jack to a point where the bolts that secure the rubber mounts can be taken out together with the mounts. Usually, a top nut will loosen and the bolt will eventually fall off.
- Raise the transmission to be able to remove your old mounts.
- Clean the place where you will put your new transmission mounts. Get a screwdriver to take out the rust and the dirt that may hinder your new transmission mounts from laying flat against the cross member.
- Raise the floor jack again to be able to lift the transmission from the cross member and put in your new rubber mounts. Your new transmission mounts will stand taller than the old mounts you removed because they have not yet supported the weight of the transmission. Slide your new mounts in proper position.
- Put in a transmission mount bolt from below and lower the floor jack until the transmission is positioned above the rubber shock absorber of the mount.
- Place a mount nut on the bolt and tighten it using a wrench. Insert the rest of the transmission mount bolts the same way.
- Lower the floor jack from below the transmission pan to have your transmission mounts support the weight of the transmission. Installation is now complete.