Q: The car is knocking

asked by on

My car is knocking. I'm not sure if it is the crankshaft, or the timing belt.

The knocking would have to be listened to by a mechanic before a diagnosis can be made, since different kinds of knocks mean different problems. The serpentine belt should be removed prior to a diagnostic test, to eliminate the possibility of an accessory causing the problem. The engine would then started to see if it is a lower engine thump, or an upper engine tick, or something in between. Also, if it comes and goes when the engine is accelerated, that could indicate a piston pin or rod issue. I recommend having a mechanic, like the ones from YourMechanic, come by and give your car a proper noise diagnosis in order to isolate the noise, and recommended any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. The car is knocking

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: 2013 Ford Focus Transmission Issue. Is it worth keeping the car?

Hi There, This is a known issue in this generation Ford Focus and some Fiestas with the "Power Shift" transmission and there have been numerous recalls and lawsuits. Although, it is would be difficult to determine how much longer your...

Q: Is it possible to weld motor mounts on a 2004 Volvo XC90?

Hello, Unfortunately, it is not recommended to weld the motor mounts as they are specifically designed to flex slightly with the torque of the engine. The design is such that the mount has a rubber mounted center piece that is...

Q: AC compressor "always ON"

Hello, thank you for writing in. Ford runs the A/C compressor in almost every setting. The concept is that it will dehumidify the air in defrost mode, and help keep the humidity down with the heat running. It runs in...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.