Skip the auto shop - Our mechanics make house calls

Q: Bad sounding engine noise, something is loose

asked by on

Whenever I have my 2007 Nissan Sentra in park, the engine makes a loose, rattling noise. I've had vehicles with knocking engines before and this was not a knock. It sounds like a motor mount or something attached to the engine rattling and sounds like the car is broken. It only has 36,000 miles, so I doubt it is in any danger mechanically, but the sound is annoying! Is this an urgent issue that needs attention?

A: The rattle is most likely coming from a fau...

The rattle is most likely coming from a faulty motor mount on the passenger side. The motor mount allows the engine to vibrate and hit metal to metal. Your vehicle should be put up on a lift while in park, and the rattle inspected. Replace the motor mount if needed. Check all other mounts as well and replace if needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I cleaned the EGR valve but I'm not sure if it is working now

Yes, if you pressed on the diaphragm and it stalled the engine that means that exhaust gases were flowing through the EGR valve as intended. A good way to test the EGR valve in its entirety is to use a...

Q: Having run for 20 - 30 minutes, it will not start.

The fact that everything else came on when the key is on suggests this is a starter relay problem. The starter relay is a small switch that relays power from the battery to the starter, directing it to turn the...

Q: I have a uno and there is a knocking sound coming from the front left hand side, it only happens when I turn slightly

Hello. Thank you for writing in. The vehicle may having issues with the steering and suspension components, or it may be have something in the way. The first thing to do in this situation is to perform a basic visual...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...