Q: Car making a loud knocking noise

asked by on

My car is making a loud knocking noise.

Hello. Unfortunately, without hearing the noise myself it is hard to make an accurate recommendation. The first thing that needs to be determined is the type of noise that is present and the possible sources. Rattling or knocking noises while driving, especially over bumps can be caused by worn or damaged suspension components or worn strut mounts. Knocking noises from the engine area could be caused by worn or damaged engine components. If the noise is resonating from the front of the engine, a possible belt pulley or tensioner could be the cause. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will be able to inspect the noise and recommend the proper repair to eliminate the sound.

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
  1. Home
  2. Questions
  3. Car making a loud knocking noise

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

Q: Steering wheel vibrates

If your steering wheel is vibrating when driving, that could be one of many problems, that may or may not be related to the need for engine mounts. Worn engine mounts will cause vibration, however, worn steering and suspension components,...

Q: I have 1988 oldsmobile cutlass ciera 2.8liter. I have had five mechanics check the car for a popping sound but they could not figure it out.

The popping sound from the engine sounds like the engine's timing is off or the fuel system is not delivering enough fuel to the engine. There could be a fuel injector that maybe sticking and not spraying properly. The popping...

Q: Loud noise from passenger side of engine.

Thank you for the link of the noise that you are hearing. The noise sounds like the timing chain is slapping the timing chain cover. Check the tensioner and make sure that it is tight. If the timing chain tensioner...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...