Skip the auto shop - Our mechanics make house calls

Q: Car broke down after making knocking sound.

asked by on

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.

A: This sounds like a possible loss of oil pro...

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?

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: Car dosent not stay on and it's running very rich

The MAP sensor relies on the correct signals being sent to it. It is possible that the sensor itself may be working properly, but that the input signal to it may not be working properly. Try checking this along with...

Q: Car hesitates or stalls before accelerating. Diagnostics test says: Bank 1 System too lean.

Hi there. Yes, a torn throttle body hose will definitely cause your concerns. Taping the boot is not a proper repair, nor will it correct the situation. The boot has to be replaced. The torn boot is allowing unmetered air...

Q: AUDI A4 Power loss and cutting

Since the trouble began so soon after it was serviced, I suggest taking it back in for a recheck. You mention that spark plugs were replaced. Your Audi's symptoms could be caused by a poor connection at a spark plug...

Related articles

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 Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...