Q: Car broke down after making knocking sound.

asked by on January 12, 2016

Car broke down a few weeks ago while on the freeway. It was making a very loud knocking under the hood and there was a huge loss of power from the engine. It seized up a number of times, but I was able to get it restarted and to safety. The battery is very low and the car will not start. I believe that there is also an issue with the motor.

This sounds like a possible loss of oil problem. If the engine has seized up before and the problem is reoccurring the engine is most likely dry. I would recommend checking the engine oil to see if it is low. If it is low, that will be your issue. If it is not low, something may have broken in the engine internally blocking oil to a certain area. Enlisting the help of a professional from YourMechanic would be a good idea. An expert in engine diagnostics will be able to help you with your issue. It is very likely that engine replacement will be required to get your vehicle up and running again. If engine replacement is not required it may at least need a major engine rebuild. This can be very costly so ensure that the problem is diagnosed correctly and done by a professional.

Was this answer helpful?
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

Get a quote

What others are asking

Glow Plug System light comes on sometimes and engine has a lack of power when the light is on.

Hi there. Check the glow plug relay and see if its plugged in. Check the circuits to the glow plugs and see if there is power to them when the key is turned on. The circuit to the glow plugs...

There's like a ticking noise coming from my engine that only happens when I drive on a highway and when stopping at a red light.

The noise that you are hearing from the engine could be one or more lifters ticking. The lifters use oil from the engine to create a hydraulic pressure in them to keep them in contact with the valvetrain. If the...

Steering wheel groans/sputters on turns

Hello, thank you for writing in. The previous tech who examined the vehicle may be correct, but it is impossible to verify that without the vehicle in front of us. The steering column can cause these symptoms, but so can...

Related articles

How to Modify the Alpine Navigation in an Acura or Honda
Modifying Modifying the original equipment manufacturer (OEM) navigation system of your Acura or Honda vehicle with aftermarket software is an easy way to add additional customization features to the already-installed system. Using a simple third-party computer program and a...
The Top 5 Selling Cars in California in 2012
California California natives are notably environmentally conscious, and this often shows in their choices of vehicles as well. While trucks rarely make it to the top spots, hybrid vehicles are frequently on the list. Though previous years have seen the...
What Is a Voltage Drop Test?
Here’s Here’s the problem – your engine is cranking slowly, or maybe not cranking at all, but the battery and starter are both working just fine. Or your alternator is charging normally, but it’s not keeping your battery charged. Obviously,...