Q: How can I tell if the motor mount needs to be replaced?

asked by on November 14, 2016

I'm about to go look at a ml430 for sale and they said it needs the motor mount replaced. How can I tell if that's what's wrong wi

My car has 175000 miles.

Hello. This problem may or may not be detected visually—excessive engine movement may be seen while idling—or by feel—engine movement can cause contact with the chassis or something else on the car, which one can feel. The motor mounts on this particular model include a hydraulic component which leaks fluid when it has ruptured or otherwise failed. This may be visible from underneath the car, with the engine splash shields removed (which is a lot of trouble). I would recommend having a pre-purchase car inspection completed by a mobile, professional technician, such as one from YourMechanic, who can come to the car’s location, give it a thorough evaluation, provide an accurate assessment of any damage or needed repairs, and then give you a cost estimate for those repairs.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Valve gaskets need replacing.

Hi. Your cooling and oil systems would need to be checked for leaks. These are two separate issues. The cooling system should not be getting low, except for a very small amount over a six to twelve month period. The...

Should i buy this Acura RSX Type S with a idle control valve that need to be fix?

Hello. This is a very low price for an otherwise great car. I would recommend having an expert mechanic inspect the car prior to the purchase to check for other potential issues. Although, the two issues you have described are...

My car cranks but won’t start

If electrical and ignition systems get water in them it can cause no starts or hard starting. You will need to have the computer tested for codes and ignition system checked to see if you are losing spark to the...

Key does not work on doors but starts the engine in the car.

Hi there. Take the key fob that unlocks the door and put it up by the column. Press the lock and unlock twice and see if the doors will lock and unlock. If the door locks will not work, then...

I'm losing power steering after replacing rack and pump

First you need to see that the fluid level is correct. Bring the engine up to operating temperature and check the fluid at the reservoir. Top it up with Pentosin CHF11 hydraulic fluid. The fluid gets foamy when it is...

not shifting into 2nd gear

Since you said your Check Engine Light is on, the first thing I would recommend doing would be to have a qualified professional use an OBD2 scanner to pull the trouble code that is produced when your Check Engine Light...

2000 grand am gt is shifting at 3500 4000 Rpms not really normal takes about 4 seconds to shift into second gear and even second g

Hi there. Typically when the transmission shifts at a higher RPM than usual, it's caused by transmission fluid that is old or obstructed in the hydraulic lines of the transmission. The best way to resolve this issue is to have...

Had bad brake booster after pulling trailer replaced still has vacuum leak inside cab ?

Make sure you do not have a vacuum leak between the brake booster and master cylinder. Sometimes the seal does not sit good and will leak. If it is okay, and you hear a vacuum leak inside the vehicle, then...

Car shuts off while idling

Hello. This can be caused by many things on this vehicle, but the most common one is the crankshaft position sensor. I have seen many of these fail on this car and cause this. I usually use a scan tool...

Related articles

What Does Car Value Mean?
Knowing Knowing whether or not you’re getting a good car for your money is difficult because “good” is open to interpretation. You and a friend can have the same new car, yet have widely differing views of its value and...
2012 Toyota Corolla vs. 2012 Honda Civic: Which One Should I Buy?
Compact cars are the unsung heroes, slightly larger than a subcompact, but not quite big enough to be classified as a mid-size sedan. These vehicles have a small wheelbase of no longer than 109 inches with between 100 and 109...
2012 Volkswagen Jetta vs. 2012 Subaru Forester: Which One Should I Buy?
Mid-size sedans are the realm of small families or commuters who want a slightly larger vehicle than a subcompact or compact car, yet don’t want to fully give up their good gas mileage. The sedan offers more comfort and space...