Skip the auto shop - Our mechanics make house calls

Q: Knocking sound

asked by on

I hear a knocking sound at the front of the truck.

A: The noise may be the serpentine belt tensio...

The noise may be the serpentine belt tensioner vibrating, or the front engine damper is broken and causing a noise. If the noise is neither of these components, then an inspection would be needed to see what the possible cause is; a low thump or knock could be a major internal engine problem. I recommend have a mechanic, such as one from YourMechanic, inspect and isolate the noise, and provide you with a diagnosis.

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: Knocking noise - 1997 Oldsmobile 98

Hi! I recommend having a close inspection of the harmonic balancer on the front of the crankshaft. When the rubber that's bonded between the pulley and the hub begins to fail and separate, it starts to move around and can...

Q: will the bellhousing interchange with a 1998 dorange 273 motor

My best recommendation would be to determine the model of transmission that your vehicle has. I would then cross reference that model number with the transmission that you are considering installing to verify its compatability. If the two transmissions are...

Q: Blown head gasket

Hi there. Common signs of a blown head gasket are: overheating, thick white smoke from the tail pipe, milky liquid in the oil cap or radiator cap, or loss of coolant. If you would like to have your head gasket...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.